AUTOZONE INC - Annual Report: 2013 (Form 10-K)

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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-K

For the fiscal year ended August 31, 2013,

or

For the transition period from                      to                     .

Commission file number 1-10714

AUTOZONE, INC.

(Exact name of registrant as specified in its charter)

(901) 495-6500

(Registrant’s telephone number, including area code)

Securities registered pursuant to Section 12(b) of the Act:

Securities registered pursuant to Section 12(g) of the Act:

None

Indicate by check mark if the Registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.    Yes  x    No  ¨

Indicate by check mark if the Registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act.    Yes  ¨    No  x

Indicate by check mark whether the Registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.    Yes  x    No  ¨

Indicate by check mark whether the Registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the Registrant was required to submit and post such files).    Yes  x    No  ¨

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K (§ 229.405 of this chapter) is not contained herein, and will not be contained, to the best of Registrant’s knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K.  x

Indicate by check mark whether the Registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See the definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act.

Indicate by check mark whether the Registrant is a shell company (as defined in Rule 12b-2 of the Act).    Yes  ¨    No  x

The aggregate market value of the voting and non-voting common equity held by non-affiliates computed by reference to the price at which the common equity was last sold, or the average bid and asked price of such common equity, as of the last business day of the registrant’s most recently completed second fiscal quarter was $13,781,127,110.

The number of shares of Common Stock outstanding as of October 21, 2013, was 34,031,760.

Documents Incorporated By Reference

Portions of the definitive Proxy Statement to be filed within 120 days of August 31, 2013, pursuant to Regulation 14A under the Securities Exchange Act of 1934 for the Annual Meeting of Stockholders to be held December 18, 2013, are incorporated by reference into Part III.

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Forward-Looking Statements

Certain statements contained in this annual report are forward-looking statements. Forward-looking statements typically use words such as “believe,” “anticipate,” “should,” “intend,” “plan,” “will,” “expect,” “estimate,” “project,” “positioned,” “strategy” and similar expressions. These are based on assumptions and assessments made by our management in light of experience and perception of historical trends, current conditions, expected future developments and other factors that we believe to be appropriate. These forward-looking statements are subject to a number of risks and uncertainties, including without limitation: credit market conditions; the impact of recessionary conditions; competition; product demand; the ability to hire and retain qualified employees; consumer debt levels; inflation; weather; raw material costs of our suppliers; energy prices; war and the prospect of war, including terrorist activity; construction delays; access to available and feasible financing; and changes in laws or regulations. Certain of these risks are discussed in more detail in the “Risk Factors” section contained in Item 1A under Part 1 of this Annual Report on Form 10-K for the year ended August 31, 2013, and these Risk Factors should be read carefully. Forward-looking statements are not guarantees of future performance and actual results; developments and business decisions may differ from those contemplated by such forward-looking statements, and events described above and in the “Risk Factors” could materially and adversely affect our business. Forward-looking statements speak only as of the date made. Except as required by applicable law, we undertake no obligation to update publicly any forward-looking statements, whether as a result of new information, future events or otherwise. Actual results may materially differ from anticipated results.

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PART I

Item  1. Business

Introduction

AutoZone, Inc. (“AutoZone,” the “Company,” “we,” “our” or “us”) is the nation’s leading retailer and a leading distributor of automotive replacement parts and accessories in the United States. We began operations in 1979 and at August 31, 2013, operated 4,836 stores in the United States, including Puerto Rico; 362 in Mexico; and three in Brazil. Each of our stores carries an extensive product line for cars, sport utility vehicles, vans and light trucks, including new and remanufactured automotive hard parts, maintenance items, accessories and non-automotive products. At August 31, 2013, in 3,421 of our domestic stores we also have a commercial sales program that provides commercial credit and prompt delivery of parts and other products to local, regional and national repair garages, dealers, service stations and public sector accounts. We also have commercial programs in select stores in Mexico, as well as in our stores in Brazil. We also sell the ALLDATA brand automotive diagnostic and repair software through www.alldata.com. Additionally, we sell automotive hard parts, maintenance items, accessories, and non-automotive products through www.autozone.com, and accessories and performance parts through www.autoanything.com, and our commercial customers can make purchases through www.autozonepro.com. We do not derive revenue from automotive repair or installation services.

At August 31, 2013, our stores were in the following locations:

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Marketing and Merchandising Strategy

We are dedicated to providing customers with superior service and trustworthy advice as well as quality automotive parts and products at a great value in conveniently located, well-designed stores. Key elements of this strategy are:

Customer Service

Customer service is the most important element in our marketing and merchandising strategy, which is based upon consumer marketing research. We emphasize that our AutoZoners (employees) should always put customers first by providing prompt, courteous service and trustworthy advice. Our electronic parts catalog assists in the selection of parts as well as warranties that are offered by us or our vendors on many of the parts that we sell. The wide area network in our stores helps us expedite credit or debit card and check approval processes, locate parts at neighboring AutoZone stores, including our hub stores, and in some cases, place special orders directly with our vendors. We sell automotive hard parts, maintenance items, accessories and non-automotive parts through www.autozone.com for pick-up in store or to be shipped directly to a customer’s home or business. Additionally, we offer smartphone apps that provide customers with store locations, driving directions, operating hours, and product availability.

Our stores generally open at 7:30 or 8 a.m. and close between 8 and 10 p.m. Monday through Saturday and typically open at 9 a.m. and close between 6 and 9 p.m. on Sunday. However, some stores are open 24 hours, and some have extended hours of 6 or 7 a.m. until midnight seven days a week.

We also provide specialty tools through our Loan-A-Tool program. Customers can borrow a specialty tool, such as a steering wheel puller, for which a do-it-yourself (“DIY”) customer or a repair shop would have little or no use other than for a single job. AutoZoners also provide other free services, including check engine light readings where allowed by law, battery charging, the collection of used oil for recycling, and the testing of starters, alternators, batteries, sensors and actuators.

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Merchandising

The following tables show some of the types of products that we sell by major category of items:

We believe that the satisfaction of our customers is often impacted by our ability to provide specific automotive products as requested. Each store carries the same basic products, but we tailor our inventory to the makes and models of the vehicles in each store’s trade area, and our sales floor products are tailored to the local store’s demographics. Our hub stores carry a larger assortment of products that are delivered to local satellite stores. We are constantly updating the products we offer to ensure that our inventory matches the products our customers need or desire.

Pricing

We want to be perceived by our customers as the value leader in our industry, by consistently providing quality merchandise at the right price, backed by a satisfactory warranty and outstanding customer service. For many of our products, we offer multiple value choices in a good/better/best assortment, with appropriate price and quality differences from the “good” products to the “better” and “best” products. A key differentiating component versus our competitors is our exclusive line of in-house brands, which includes the Econocraft, Valucraft, AutoZone, SureBilt, ProElite, Duralast, Duralast Gold, and Duralast Platinum brands. We believe that our overall value compares favorably to that of our competitors.

Brand Marketing: Advertising and Promotions

We believe that targeted advertising and promotions play important roles in succeeding in today’s environment. We are constantly working to understand our customers’ wants and needs so that we can build long-lasting, loyal relationships. We utilize promotions, advertising and loyalty card programs primarily to advise customers about the overall importance of vehicle maintenance, our great value and the availability of high quality parts. Broadcast and internet media are our primary advertising methods of driving traffic to our stores. We utilize in-store signage, in-store circulars, and creative product placement and promotions to help educate customers about products that they need.

Store Design and Visual Merchandising

We design and build stores for high visual impact. The typical AutoZone store utilizes colorful exterior and interior signage, exposed beams and ductwork and brightly lit interiors. Maintenance products, accessories and non-automotive items are attractively displayed for easy browsing by customers. In-store signage and special displays promote products on floor displays, end caps and shelves.

Commercial

Our commercial sales program operates in a highly fragmented market, and we are one of the leading distributors of automotive parts and other products to local, regional and national repair garages, dealers, service stations and

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public sector accounts in the United States, Puerto Rico, Mexico and Brazil. As a part of the program, we offer credit and delivery to our customers, as well as online ordering through www.autozonepro.com. Through our hub stores, we offer a greater range of parts and products desired by professional technicians. We have dedicated sales teams focused on independent repair shops as well as national, regional and public sector commercial accounts.

Store Operations

Store Formats

Substantially all AutoZone stores are based on standard store formats, resulting in generally consistent appearance, merchandising and product mix. Approximately 85% to 90% of each store’s square footage is selling space, of which approximately 40% to 45% is dedicated to hard parts inventory. The hard parts inventory area is generally fronted by counters or pods that run the depth or length of the store, dividing the hard parts area from the remainder of the store. The remaining selling space contains displays of maintenance, accessories and non-automotive items.

We believe that our stores are “destination stores,” generating their own traffic rather than relying on traffic created by adjacent stores. Therefore, we situate most stores on major thoroughfares with easy access and good parking.

Store Personnel and Training

Each store typically employs from 10 to 16 AutoZoners, including a manager and, in some cases, an assistant manager. We provide on-the-job training as well as formal training programs, including an annual national sales meeting, regular store meetings on specific sales and product issues, standardized training manuals and a specialist program that provides training to AutoZoners in several areas of technical expertise from the Company, our vendors and independent certification agencies. All AutoZoners are encouraged to complete tests resulting in certifications by the National Institute for Automotive Service Excellence (“ASE”), which is broadly recognized for training certification in the automotive industry. Training is supplemented with frequent store visits by management.

Store managers, sales representatives, commercial specialists, and managers at various levels across the organization receive financial incentives through performance-based bonuses. In addition, our growth has provided opportunities for the promotion of qualified AutoZoners. We believe these opportunities are important to attract, motivate and retain high quality AutoZoners.

All store support functions are centralized in our store support centers located in Memphis, Tennessee; Monterrey, Mexico; Chihuahua, Mexico and Sao Paulo, Brazil. We believe that this centralization enhances consistent execution of our merchandising and marketing strategies at the store level, while reducing expenses and cost of sales.

Store Automation

All of our stores have Z-net, our proprietary electronic catalog that enables our AutoZoners to efficiently look up the parts that our customers need and to provide complete job solutions, advice and information for customer vehicles. Z-net provides parts information based on the year, make, model and engine type of a vehicle and also tracks inventory availability at the store, at other nearby stores and through special order. The Z-net display screens are placed on the hard parts counter or pods, where both the AutoZoner and customer can view the screen.

Our stores utilize our computerized proprietary Store Management System, which includes bar code scanning and point-of-sale data collection terminals. The Store Management System provides administrative assistance and improved personnel scheduling at the store level, as well as enhanced merchandising information and improved inventory control. We believe the Store Management System also enhances customer service through faster processing of transactions and simplified warranty and product return procedures. In addition, our wide area network enables the stores to expedite credit or debit card and check approval processes, to access national warranty data, to implement real-time inventory controls and to locate and hold parts at neighboring AutoZone stores.

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Store Development

The following table reflects our store development during the past five fiscal years:

We believe that expansion opportunities exist both in markets that we do not currently serve, as well as in markets where we can achieve a larger presence. We attempt to obtain high visibility sites in high traffic locations and undertake substantial research prior to entering new markets. The most important criteria for opening a new store are the projected future profitability and the ability to achieve our required investment hurdle rate. Key factors in selecting new site and market locations include population, demographics, vehicle profile, customer buying trends, commercial businesses, number and strength of competitors’ stores and the cost of real estate. In reviewing the vehicle profile, we also consider the number of vehicles that are seven years old and older, or “our kind of vehicles” these vehicles are generally no longer under the original manufacturers’ warranties and require more maintenance and repair than newer vehicles. We generally seek to open new stores within or contiguous to existing market areas and attempt to cluster development in markets in a relatively short period of time. In addition to continuing to lease or develop our own stores, we evaluate and may make strategic acquisitions.

Purchasing and Supply Chain

Merchandise is selected and purchased for all stores through our store support centers located in Memphis, Tennessee and Monterrey, Mexico. In fiscal 2013, one class of similar products accounted for approximately 10 percent of our total sales. No vendor supplied more than 10 percent of our purchases, and we believe that alternative sources of supply exist, at similar costs, for most types of product sold. Most of our merchandise flows through our distribution centers to our stores by our fleet of tractors and trailers or by third-party trucking firms.

Our hub stores have increased our ability to distribute products on a timely basis to many of our stores and to expand our product assortment. A hub store generally has a larger assortment of products as well as regular replenishment items that can be delivered to a store in its network within 24 hours. Hub stores are generally replenished from distribution centers multiple times per week.

Competition

The sale of automotive parts, accessories and maintenance items is highly competitive in many areas, including name recognition, product availability, customer service, store location and price. AutoZone competes in the after-market auto parts industry, which includes both the retail DIY and commercial do-it-for-me (“DIFM”) auto parts and products markets.

Competitors include national, regional and local auto parts chains, independently owned parts stores, online parts stores, jobbers, repair shops, car washes and auto dealers, in addition to discount and mass merchandise stores, department stores, hardware stores, supermarkets, drugstores, convenience stores, home stores, and other online retailers that sell aftermarket vehicle parts and supplies, chemicals, accessories, tools and maintenance parts. AutoZone competes on the basis of customer service, including the trustworthy advice of our AutoZoners; merchandise quality, selection and availability; price; product warranty; store layouts, location and convenience; and the strength of our AutoZone brand name, trademarks and service marks.

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Trademarks and Patents

We have registered several service marks and trademarks in the United States Patent and Trademark office as well as in certain other countries, including our service marks, “AutoZone” and “Get in the Zone,” and trademarks, “AutoZone,” “Duralast,” “Duralast Gold,” “Duralast Platinum,” “Valucraft,” “Econocraft,” “ALLDATA,” “AutoAnything,” “Loan-A-Tool” and “Z-net.” We believe that these service marks and trademarks are important components of our marketing and merchandising strategies.

Employees

As of August 31, 2013, we employed over 71,000 persons, approximately 59 percent of whom were employed full-time. About 92 percent of our AutoZoners were employed in stores or in direct field supervision, approximately 5 percent in distribution centers and approximately 3 percent in store support and other functions. Included in the above numbers are approximately 5,000 persons employed in our Mexico and Brazil operations.

We have never experienced any material labor disruption and believe that relations with our AutoZoners are good.

AutoZone Websites

AutoZone’s primary website is at http://www.autozone.com. We make available, free of charge, at our investor relations website, http://www.autozoneinc.com, our Annual Reports on Form 10-K, Quarterly Reports on Form 10-Q, Current Reports on Form 8-K, proxy statements, registration statements and amendments to those reports filed or furnished pursuant to Section 13(a) or 15(d) of the Securities and Exchange Act of 1934, as amended, as soon as reasonably feasible after we electronically file such material with, or furnish it to, the Securities and Exchange Commission.

Executive Officers of the Registrant

The following list describes our executive officers. The title of each executive officer includes the words “Customer Satisfaction” which reflects our commitment to customer service. Officers are elected by and serve at the discretion of the Board of Directors.

William C. Rhodes, III, 48—Chairman, President and Chief Executive Officer, Customer Satisfaction

William C. Rhodes, III, was named Chairman of AutoZone during fiscal 2007 and has been President, Chief Executive Officer and a director since March 2005. Prior to his appointment as President and Chief Executive Officer, Mr. Rhodes was Executive Vice President – Store Operations and Commercial. Previously, he held several key management positions with the Company. Prior to 1994, Mr. Rhodes was a manager with Ernst & Young LLP. Mr. Rhodes is a member of the Board of Directors for Dollar General Corporation.

William T. Giles, 54—Chief Financial Officer and Executive Vice President – Finance, Information Technology and ALLDATA, Customer Satisfaction

William T. Giles was named Chief Financial Officer and Executive Vice President – Finance, Information Technology and ALLDATA during October 2012. Prior to that, he was Chief Financial Officer and Executive Vice President – Finance, Information Technology and Store Development from fiscal 2007 to October 2012; Executive Vice President, Chief Financial Officer and Treasurer from June 2006 to December 2006; and Executive Vice President, Chief Financial Officer since May 2006. From 1991 to May 2006, he held several positions with Linens N’ Things, Inc., most recently as the Executive Vice President and Chief Financial Officer. Prior to 1991, he was with Melville, Inc. and PricewaterhouseCoopers. Mr. Giles is a member of the Board of Directors for Brinker International.

Harry L. Goldsmith, 62—Executive Vice President, General Counsel and Secretary, Customer Satisfaction

Harry L. Goldsmith was elected Executive Vice President, General Counsel and Secretary during fiscal 2006. Previously, he was Senior Vice President, General Counsel and Secretary since 1996 and was Vice President, General Counsel and Secretary from 1993 to 1996. In June 2013, Mr. Goldsmith announced his plans to retire, effective January 2014.

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Mark A. Finestone, 52—Senior Vice President – Merchandising, Customer Satisfaction

Mark A. Finestone was elected Senior Vice President – Merchandising during fiscal 2008. Previously, he was Vice President – Merchandising since 2002. Prior to joining AutoZone in 2002, Mr. Finestone worked for May Department Stores for 19 years where he held a variety of leadership roles which included Divisional Vice President, Merchandising.

William W. Graves, 53—Senior Vice President – Supply Chain and International, Customer Satisfaction

William W. Graves was named Senior Vice President – Supply Chain and International during October 2012. Prior thereto, he was Senior Vice President – Supply Chain from fiscal 2006 to October 2012 and Vice President – Supply Chain from fiscal 2000 to fiscal 2006. From 1992 to 2000, Mr. Graves served in various capacities with the Company.

Ronald B. Griffin, 59—Senior Vice President and Chief Information Officer, Customer Satisfaction

Ronald B. Griffin was elected Senior Vice President and Chief Information Officer during June 2012. Prior to that, he was Senior Vice President, Global Information Technology at Hewlett-Packard Company. During his tenure at Hewlett-Packard Company, he also served as the Chief Information Officer for the Enterprise Business Division. Prior to that, Mr. Griffin was Executive Vice President and Chief Information Officer for Fleming Companies, Inc. He also spent over 12 years with The Home Depot, Inc., with the last eight years in the role of Chief Information Officer. Mr. Griffin also served at Deloitte & Touche LLP and Delta Air Lines, Inc.

Albert Saltiel, 49—Senior Vice President – Marketing, Customer Satisfaction

Albert “Al” Saltiel was elected Senior Vice President – Marketing during April 2013. Prior to that, he was Chief Marketing Officer and a key member of the leadership team at Navistar International Corporation. Mr. Saltiel has also been with Sony Electronics as General Manager, Marketing, and Ford Motor Company where he held multiple marketing roles.

Thomas B. Newbern, 51—Senior Vice President – Store Operations and Store Development, Customer Satisfaction

Thomas B. Newbern was elected Senior Vice President – Store Operation and Store Development during October 2012. Previously, Mr. Newbern held the titles Senior Vice President – Store Operations from fiscal 2007 to October 2012 and Vice President – Store Operations from fiscal 1998 to fiscal 2007. Previously, he has held several key management positions with the Company.

Charlie Pleas, III, 48—Senior Vice President and Controller, Customer Satisfaction

Charlie Pleas, III, was elected Senior Vice President and Controller during fiscal 2007. Prior to that, he was Vice President and Controller since 2003. Previously, he was Vice President – Accounting since 2000, and Director of General Accounting since 1996. Prior to joining AutoZone, Mr. Pleas was a Division Controller with Fleming Companies, Inc. where he served in various capacities since 1988.

Larry M. Roesel, 56—Senior Vice President – Commercial, Customer Satisfaction

Larry M. Roesel was elected Senior Vice President – Commercial during fiscal 2007. Mr. Roesel came to AutoZone with more than thirty years of experience with OfficeMax, Inc. and its predecessor, where he served in operations, sales and general management.

Michael A. Womack, 46—Senior Vice President – Human Resources, Customer Satisfaction

Michael A. Womack was elected Senior Vice President – Human Resources in June 2012. He was previously Vice President of Human Resources with Cintas Corp. and had been with Cintas since 2003. Before joining Cintas, he was a law partner with the Littler Mendelson law firm.

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Item 1A. Risk Factors

Our business is subject to a variety of risks. Set forth below are certain of the important risks that we face, the occurrence of which could have a material, adverse effect on our business. These risks are not the only ones we face. Our business could also be affected by additional factors that are presently unknown to us or that we currently believe to be immaterial to our business.

If demand for our products slows, then our business may be materially affected.

Demand for products sold by our stores depends on many factors, including:

For the long term, demand for our products may be affected by:

All of these factors could result in immediate and longer term declines in the demand for our products, which could adversely affect our sales, cash flows and overall financial condition.

If we are unable to compete successfully against other businesses that sell the products that we sell, we could lose customers and our sales and profits may decline.

The sale of automotive parts, accessories and maintenance items is highly competitive and is based on many factors, including name recognition, product availability, customer service, store location and price. Competitors are opening locations near our existing stores. AutoZone competes as a provider in both the DIY and DIFM auto parts and accessories markets.

Competitors include national, regional and local auto parts chains, independently owned parts stores, online parts stores, jobbers, repair shops, car washes and auto dealers, in addition to discount and mass merchandise stores, hardware stores, supermarkets, drugstores, convenience stores, home stores, and other online retailers that sell aftermarket vehicle parts and supplies, chemicals, accessories, tools and maintenance parts. Although we believe we compete effectively on the basis of customer service, including the knowledge and expertise of our AutoZoners; merchandise quality, selection and availability; product warranty; store layout, location and convenience; price; and the strength of our AutoZone brand name, trademarks and service marks; some competitors may gain competitive advantages, such as greater financial and marketing resources allowing them to sell automotive products at lower prices, larger stores with more merchandise, longer operating histories, more

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frequent customer visits and more effective advertising. If we are unable to continue to develop successful competitive strategies, or if our competitors develop more effective strategies, we could lose customers and our sales and profits may decline.

We may not be able to sustain our historic rate of sales growth.

We have increased our store count in the past five fiscal years, growing from 4,240 stores at August 30, 2008, to 5,201 stores at August 31, 2013, an average store count increase per year of 5%. Additionally, we have increased annual revenues in the past five fiscal years from $6.523 billion in fiscal 2008 to $9.148 billion in fiscal 2013, an average increase per year of 8%. Annual revenue growth is driven by the opening of new stores and increases in same-store sales. We open new stores only after evaluating customer buying trends and market demand/needs, all of which could be adversely affected by continued job losses, wage cuts, small business failures and microeconomic conditions unique to the automotive industry. Same store sales are impacted both by customer demand levels and by the prices we are able to charge for our products, which can also be negatively impacted by continued recessionary pressures. We cannot provide any assurance that we will continue to open stores at historical rates or continue to achieve increases in same-store sales.

If we cannot profitably increase our market share in the commercial auto parts business, our sales growth may be limited.

Although we are one of the largest sellers of auto parts in the commercial market, to increase commercial sales we must compete against national and regional auto parts chains, independently owned parts stores, wholesalers and jobbers and auto dealers. Although we believe we compete effectively on the basis of customer service, merchandise quality, selection and availability, price, product warranty, distribution locations, and the strength of our AutoZone brand name, trademarks and service marks, some automotive aftermarket jobbers have been in business for substantially longer periods of time than we have, have developed long-term customer relationships and have large available inventories. If we are unable to profitably develop new commercial customers, our sales growth may be limited.

Significant changes in macroeconomic factors could adversely affect our financial condition and results of operations.

Our short-term and long-term debt is rated investment grade by the major rating agencies. These investment-grade credit ratings have historically allowed us to take advantage of lower interest rates and other favorable terms on our short-term credit lines, in our senior debt offerings and in the commercial paper markets. To maintain our investment-grade ratings, we are required to meet certain financial performance ratios. An increase in our debt and/or a decline in our earnings could result in downgrades in our credit ratings. A downgrade in our credit ratings could limit our access to public debt markets, limit the institutions willing to provide credit facilities to us, result in more restrictive financial and other covenants in our public and private debt and would likely significantly increase our overall borrowing costs and adversely affect our earnings.

Moreover, significant deterioration in the financial condition of large financial institutions in calendar years 2008 and 2009 resulted in a severe loss of liquidity and availability of credit in global credit markets and in more stringent borrowing terms. During brief time intervals in the fourth quarter of calendar 2008 and the first quarter of calendar 2009, there was limited liquidity in the commercial paper markets, resulting in an absence of commercial paper buyers and extraordinarily high interest rates on commercial paper. We can provide no assurance that credit market events such as those that occurred in the fourth quarter of 2008 and the first quarter of 2009 will not occur again in the foreseeable future. Conditions and events in the global credit market could have a material adverse effect on our access to short-term debt and the terms and cost of that debt.

Macroeconomic conditions also impact both our customers and our suppliers. Job growth in the United States has stagnated and unemployment has remained at historically high levels during the past five years. If the United States government is unable to reach agreement on legislation addressing the United States’ current debt level and budget deficit, many economists have predicted another economic recession. Continued recessionary conditions could result in additional job losses and business failures, which could result in our loss of certain small business customers and curtailment of spending by our retail customers. In addition, continued distress in global credit markets, business failures and other recessionary conditions could have a material adverse effect on the ability of

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our suppliers to obtain necessary short and long-term financing to meet our inventory demands. Moreover, rising energy prices could impact our merchandise distribution, commercial delivery, utility and product costs. All of these macroeconomic conditions could adversely affect our sales growth, margins and overhead, which could adversely affect our financial condition and operations.

Our business depends upon hiring and retaining qualified employees.

We believe that much of our brand value lies in the quality of the more than 71,000 AutoZoners employed in our stores, distribution centers, store support centers, ALLDATA and AutoAnything. We cannot be assured that we can continue to hire and retain qualified employees at current wage rates. If we are unable to hire, properly train and/or retain qualified employees, we could experience higher employment costs, reduced sales, losses of customers and diminution of our brand, which could adversely affect our earnings. If we do not maintain competitive wages, our customer service could suffer due to a declining quality of our workforce or, alternatively, our earnings could decrease if we increase our wage rates.

Inability to acquire and provide quality merchandise could adversely affect our sales and results of operations.

We are dependent upon our vendors continuing to supply us with quality merchandise. If our merchandise offerings do not meet our customers’ expectations regarding quality and safety, we could experience lost sales, increased costs and exposure to legal and reputational risk. All of our vendors must comply with applicable product safety laws, and we are dependent on them to ensure that the products we buy comply with all safety and quality standards. Events that give rise to actual, potential or perceived product safety concerns could expose us to government enforcement action or private litigation and result in costly product recalls and other liabilities. To the extent our suppliers are subject to added government regulation of their product design and/or manufacturing processes, the cost of the merchandise we purchase may rise. In addition, negative customer perceptions regarding the safety or quality of the products we sell could cause our customers to seek alternative sources for their needs, resulting in lost sales. In those circumstances, it may be difficult and costly for us to regain the confidence of our customers. Moreover, if any of our significant vendors experience financial difficulties or otherwise are unable to deliver merchandise to us on a timely basis, or at all, we could have product shortages in our stores that could adversely affect customers’ perceptions of us and cause us to lose customers and sales.

Our ability to grow depends in part on new store openings, existing store remodels and expansions and effective utilization of our existing supply chain and hub network.

Our continued growth and success will depend in part on our ability to open and operate new stores and expand and remodel existing stores to meet customers’ needs on a timely and profitable basis. Accomplishing our new and existing store expansion goals will depend upon a number of factors, including the ability to partner with developers and landlords to obtain suitable sites for new and expanded stores at acceptable costs, the hiring and training of qualified personnel, particularly at the store management level, and the integration of new stores into existing operations. There can be no assurance we will be able to achieve our store expansion goals, manage our growth effectively, successfully integrate the planned new stores into our operations or operate our new, remodeled and expanded stores profitably.

In addition, we extensively utilize hub stores, our supply chain and logistics management techniques to efficiently stock our stores. If we fail to effectively utilize our existing hubs and/or supply chains, we could experience inappropriate inventory levels in our stores, which could adversely affect our sales volume and/or our margins.

Our failure to protect our reputation could have a material adverse effect on our brand name.

We believe our continued strong sales growth is driven in significant part by our brand name. The value in our brand name and its continued effectiveness in driving our sales growth are dependent to a significant degree on our ability to maintain our reputation for safety, high product quality, friendliness, service, trustworthy advice, integrity and business ethics. Any negative publicity about these types of concerns may reduce demand for our merchandise. Failure to comply with ethical, social, product, labor and environmental standards could also jeopardize our reputation and potentially lead to various adverse consumer actions. Failure to comply with applicable laws and regulations, to maintain an effective system of internal controls or to provide accurate and timely financial statement information could also hurt our reputation.

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Our business involves the storage of personal information about our customers and AutoZoners. Failure to protect the security of our customers’, employees’ and company information could subject us to costly regulatory enforcement actions, expose us to litigation and our reputation could suffer. While we take significant steps to protect customer, employee and other confidential information, including maintaining compliance with payment card industry standards, our security measures may be breached in the future due to cyber attack, employee error or other acts, and unauthorized parties may obtain access to this data. To date, we have not experienced any significant breaches of information.

Damage to our reputation or loss of consumer confidence for any of these or other reasons could have a material adverse effect on our results of operations and financial condition, as well as require additional resources to rebuild our reputation.

Business interruptions may negatively impact our store hours, operability of our computer and other systems, availability of merchandise and otherwise have a material negative effect on our sales and our business.

War or acts of terrorism, political unrest, hurricanes, windstorms, fires, earthquakes and other natural or other disasters or the threat of any of them, may result in certain of our stores being closed for a period of time or permanently or have a negative impact on our ability to obtain merchandise available for sale in our stores. Some of our merchandise is imported from other countries. If imported goods become difficult or impossible to bring into the United States, and if we cannot obtain such merchandise from other sources at similar costs, our sales and profit margins may be negatively affected.

In the event that commercial transportation is curtailed or substantially delayed, our business may be adversely impacted, as we may have difficulty shipping merchandise to our distribution centers and stores resulting in lost sales and/or a potential loss of customer loyalty. Transportation issues could also cause us to cancel purchase orders if we are unable to receive merchandise in our distribution centers.

We rely extensively on our computer systems to manage inventory, process transactions and summarize results. Our systems are subject to damage or interruption from power outages, telecommunications failures, computer viruses, security breaches and catastrophic events. If our systems are damaged or fail to function properly, we may incur substantial costs to repair or replace them, and may experience loss of critical data and interruptions or delays in our ability to manage inventories or process transactions, which could result in lost sales, inability to process purchase orders and/or a potential loss of customer loyalty, which could adversely affect our results of operations.

Item 1B. Unresolved Staff Comments

None.

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Item 2. Properties

The following table reflects the square footage and number of leased and owned properties for our stores as of August 31, 2013:

We have approximately 4.0 million square feet in distribution centers servicing our stores, of which approximately 1.3 million square feet is leased and the remainder is owned. Our distribution centers are located in Arizona, California, Georgia, Illinois, Ohio, Pennsylvania, Tennessee, Texas, and Mexico. Our primary store support center is located in Memphis, Tennessee, and consists of approximately 260,000 square feet. We also have three additional store support centers located in Monterrey, Mexico; Chihuahua, Mexico and Sao Paulo, Brazil. The ALLDATA headquarters building in Elk Grove, California, and the AutoAnything headquarters space in San Diego, California are leased, and we also own or lease other properties that are not material in the aggregate.

Item 3. Legal Proceedings

In 2004, we acquired a store site in Mount Ephraim, New Jersey that had previously been the site of a gasoline service station and contained evidence of groundwater contamination. Upon acquisition, we voluntarily reported the groundwater contamination issue to the New Jersey Department of Environmental Protection and entered into a Voluntary Remediation Agreement providing for the remediation of the contamination associated with the property. We have conducted and paid for (at an immaterial cost to us) remediation of contamination on the property. We are also investigating, and will be addressing, potential vapor intrusion impacts in downgradient residences and businesses. The New Jersey Department of Environmental Protection asserted, in a Directive and Notice to Insurers dated February 19, 2013 (“Directive”), that we are liable for the downgradient impacts under a joint and severable liability theory, and we have contested any such assertions due to the existence of other entities/sources of contamination, some of which are also named in the Directive, in the area of the property. Pursuant to the Voluntary Remediation Agreement, upon completion of all remediation required by the agreement, we believe we are eligible to be reimbursed up to 75 percent of qualified remediation costs by the State of New Jersey. We have asked the state for clarification that the agreement applies to off-site work, and the state is considering the request. Although the aggregate amount of additional costs that we may incur pursuant to the remediation cannot currently be ascertained, we do not currently believe that fulfillment of our obligations under the agreement or otherwise will result in costs that are material to our financial condition, results of operations or cash flow.

We are involved in various other legal proceedings incidental to the conduct of our business, including several lawsuits containing class-action allegations in which the plaintiffs are current and former hourly and salaried employees who allege various wage and hour violations and unlawful termination practices. We do not currently believe that, either individually or in the aggregate, these matters will result in liabilities material to our financial condition, results of operations or cash flows.

Item 4. Mine Safety Disclosures

Not applicable.

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PART II

Item 5. Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities

Our common stock is listed on the New York Stock Exchange under the symbol “AZO.” On October 21, 2013, there were 2,778 stockholders of record, which does not include the number of beneficial owners whose shares were represented by security position listings.

We currently do not pay a dividend on our common stock. Our ability to pay dividends is subject to limitations imposed by Nevada law. Any future payment of dividends would be dependent upon our financial condition, capital requirements, earnings and cash flow.

The following table sets forth the high and low sales prices per share of common stock, as reported by the New York Stock Exchange, for the periods indicated:

During 1998, the Company announced a program permitting the Company to repurchase a portion of its outstanding shares not to exceed a dollar maximum established by the Company’s Board of Directors. The program was most recently amended on June 11, 2013, to increase the repurchase authorization by $750 million to raise the cumulative share repurchase authorization from $12.65 billion to $13.40 billion.

Shares of common stock repurchased by the Company during the quarter ended August 31, 2013, were as follows:

The Company also repurchased, at fair value, an additional 22,915 shares in fiscal 2013, 24,113 shares in fiscal 2012, and 30,864 shares in fiscal 2011 from employees electing to sell their stock under the Company’s Sixth Amended and Restated Employee Stock Purchase Plan (the “Employee Plan”), qualified under Section 423 of the Internal Revenue Code, under which all eligible employees may purchase AutoZone’s common stock at 85% of the lower of the market price of the common stock on the first day or last day of each calendar quarter through payroll deductions. Maximum permitted annual purchases are $15,000 per employee or 10 percent of compensation, whichever is less. Under the Employee Plan, 18,228 shares were sold to employees in fiscal 2013, 19,403 shares were sold to employees in fiscal 2012, and 21,608 shares were sold to employees in fiscal 2011. At August 31, 2013, 234,744 shares of common stock were reserved for future issuance under the Employee Plan.

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Once executives have reached the maximum purchases under the Employee Plan, the Fifth Amended and Restated Executive Stock Purchase Plan (the “Executive Plan”) permits all eligible executives to purchase AutoZone’s common stock up to 25 percent of his or her annual salary and bonus. Purchases by executives under the Executive Plan were 3,454 shares in fiscal 2013, 3,937 shares in fiscal 2012, and 1,719 shares in fiscal 2011. At August 31, 2013, 248,953 shares of common stock were reserved for future issuance under the Executive Plan.

Stock Performance Graph

The graph below presents changes in the value of AutoZone’s stock as compared to Standard & Poor’s 500 Composite Index (“S&P 500”) and to Standard & Poor’s Retail Index (“S&P Retail Index”) for the five-year period beginning August 30, 2008 and ending August 31, 2013.

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Item 6. Selected Financial Data

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Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations

We are the nation’s leading retailer, and a leading distributor, of automotive replacement parts and accessories in the United States. We began operations in 1979 and at August 31, 2013, operated 4,836 stores in the United States, including Puerto Rico; 362 in Mexico; and three in Brazil. Each of our stores carries an extensive product line for cars, sport utility vehicles, vans and light trucks, including new and remanufactured automotive hard parts, maintenance items, accessories and non-automotive products. At August 31, 2013, in 3,421 of our domestic stores, we also have a commercial sales program that provides commercial credit and prompt delivery of parts and other products to local, regional and national repair garages, dealers, service stations and public sector accounts. We also have commercial programs in select stores in Mexico, as well as in our stores in Brazil. We also sell the ALLDATA brand automotive diagnostic and repair software through www.alldata.com. Additionally, we sell automotive hard parts, maintenance items, accessories, and non-automotive products through www.autozone.com, and accessories and performance parts through www.autoanything.com, and our commercial customers can make purchases through www.autozonepro.com. We do not derive revenue from automotive repair or installation services.

Executive Summary

We achieved strong performance in fiscal 2013, delivering record net income of $1.016 billion, a 9.3% increase over the prior year, and sales growth of $543.7 million, a 6.3% increase over the prior year. We completed the year with growth in all areas of our business. We are pleased with the results of our retail business and the increase in our commercial business, where we continue to build our internal sales force and continue to refine our parts assortment. Over the past several years, various factors have occurred within the economy that affect both our customers and our industry, including the impact of the recession, continued high unemployment, and other challenging economic conditions. Although we have seen a recent increase in new vehicle sales, we believe our consumers’ cash flows continue to decrease due to the previously listed factors. Given the nature of these macroeconomic factors, we cannot predict whether or for how long these trends will continue, nor can we predict to what degree these trends will impact us in the future.

We believe other macroeconomic factors have adversely affected both our customers and our industry. During fiscal 2013, the average price per gallon of unleaded gasoline in the United States remained at a high level, $3.65 per gallon, compared to $3.57 per gallon during fiscal 2012. We continue to believe gas prices will remain at overall high levels, thereby reducing discretionary spending for all consumers, and, in particular, our customers. With approximately 11 billion gallons of unleaded gas consumed each month across the U.S., each $1 decrease at the pump contributes approximately $11 billion of additional spending capacity to consumers each month. Given the unpredictability of gas prices, we cannot predict whether gas prices will increase or decrease, nor can we predict how any future changes in gas prices will impact our sales in future periods.

An additional macroeconomic factor facing our customer is the reinstitution of payroll taxes back to historic levels. The reduction in our customers’ take home pay as a result of the recent increase in payroll taxes was effective at the beginning of the 2013 calendar year and, at this point, we cannot predict the impact this change has had or will have on our sales in future periods.

During fiscal 2013, failure and maintenance related categories represented the largest portion of our sales mix, at approximately 84% of total sales, with failure related categories continuing to be our strongest performers. While

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we have not experienced any fundamental shifts in our category sales mix as compared to previous years, we did experience a slight decline in sales of the maintenance category as a percentage of sales. We believe the slowdown in maintenance related products during fiscal 2013 was largely due to weather related impacts in various regions. Because of the unusually mild winter during fiscal 2012 across parts of the U.S., we saw a reduced benefit from sales of maintenance related products in fiscal 2013 compared to the prior fiscal year. However, sales in the maintenance category did improve in the last quarter of fiscal 2013 due to a more normalized winter in fiscal 2013 as compared to fiscal 2012.

Our primary response to fluctuations in the demand for the products we sell is to adjust our advertising message, store staffing, and product assortment. Specifically, during fiscal 2013, we have closely studied our hub distribution model and store inventory levels and assortment. As a result, we are performing certain strategic tests including adding additional inventory into our hub stores and increasing product availability in our stores. We continue to believe we are well positioned to help our customers save money and meet their needs in a challenging macroeconomic environment.

The two statistics we believe have the closest correlation to our market growth over the long-term are miles driven and the number of seven year old or older vehicles on the road.

Miles Driven

We believe that as the number of miles driven increases, consumers’ vehicles are more likely to need service and maintenance, resulting in an increase in the need for automotive hard parts and maintenance items. While over the long-term, we have seen a close correlation between our net sales and the number of miles driven, we have also seen certain time frames of minimal correlation in sales performance and miles driven. During the periods of minimal correlation between net sales and miles driven, we believe net sales have been positively impacted by other factors, including the number of seven year old or older vehicles on the road. Since the beginning of the fiscal year and through June 2013 (latest publicly available information), miles driven decreased slightly compared to the same period last year.

Seven Year Old or Older Vehicles

Since 2008, new vehicle sales have been significantly lower than historical levels, which we believe contributed to an increasing number of seven year old or older vehicles on the road. We estimate vehicles are driven an average of approximately 12,500 miles each year. In seven years, the average miles driven equates to approximately 87,500 miles. Our experience is that at this point in a vehicle’s life, most vehicles are not covered by warranties and increased maintenance is needed to keep the vehicle operating. According to the latest data provided by the Automotive Aftermarket Industry Association, as of January 1, 2013, the average age of vehicles on the road is 11.3 years as compared to 11.1 years as of January 1, 2012. Although the average age of vehicles continues to increase, it is increasing at a decelerated rate primarily driven by the improvement in new car sales in recent years. However, in the near term, we expect the aging vehicle population to continue to increase, as consumers keep their cars longer in an effort to save money during this uncertain economy. As the number of seven year old or older vehicles on the road increases, we expect an increase in demand for the products we sell.

Results of Operations

Fiscal 2013 Compared with Fiscal 2012

For the fiscal year ended August 31, 2013, we reported net sales of $9.148 billion compared with $8.604 billion for the year ended August 25, 2012, a 6.3% increase from fiscal 2012. This growth was driven primarily by sales from new stores of $222.3 million, the 53^rd week sales of $177.7 million, and sales from AutoAnything for a portion of the fiscal year.

At August 31, 2013, we operated 4,836 domestic stores, 362 stores in Mexico and three stores in Brazil, compared with 4,685 domestic stores, 321 stores in Mexico and none in Brazil at August 25, 2012. We reported a total auto parts (domestic, Mexico and Brazil) sales increase of 5.2% for fiscal 2013.

Gross profit for fiscal 2013 was $4.741 billion, or 51.8% of net sales, compared with $4.432 billion, or 51.5% of net sales for fiscal 2012. The improvement in gross margin was primarily driven by lower product acquisition costs, partially offset by the inclusion of AutoAnything (28 basis points).

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Operating, selling, general and administrative expenses for fiscal 2013 increased to $2.968 billion, or 32.4% of net sales, from $2.803 billion, or 32.6% of net sales for fiscal 2012. Operating expenses, as a percentage of sales, improved due to lower incentive compensation (19 basis points), partially offset by lower sales growth rates.

Interest expense, net for fiscal 2013 was $185.4 million compared with $175.9 million during fiscal 2012. This increase was primarily due to higher average borrowing levels over the comparable prior year period; partially offset by a decline in borrowing rates. Average borrowings for fiscal 2013 were $3.927 billion, compared with $3.507 billion for fiscal 2012 and weighted average borrowing rates were 4.5% for fiscal 2013, compared to 4.7% for fiscal 2012.

Our effective income tax rate was 36.0% of pre-tax income for fiscal 2013 compared to 36.0% for fiscal 2012.

Net income for fiscal 2013 increased by 9.3% to $1.016 billion, and diluted earnings per share increased 18.3% to $27.79 from $23.48 in fiscal 2012. The impact of the fiscal 2013 stock repurchases on diluted earnings per share in fiscal 2013 was an increase of approximately $1.09.

Effective December 2012, we acquired certain assets and liabilities of AutoAnything, an online retailer of specialized automotive products for up to $150 million, including an initial cash payment of $115 million, up to a $5 million holdback payment for working capital true-ups, and contingent payments not to exceed $30 million. During the third quarter of fiscal 2013, we paid the holdback payment for working capital true-ups of $1.1 million. With this acquisition, we expect to bolster our online presence in the automotive accessory and performance markets. The results of operations from AutoAnything have been included in our Other business activities since the date of acquisition. The purchase price allocation resulted in goodwill of $83.4 million and intangible assets totaling $58.7 million. Goodwill generated from the acquisition is tax deductible and is primarily attributable to expected synergies and the assembled workforce. The contingent consideration is based on the achievement of certain performance metrics through calendar year 2014 with any earned payments due during the first calendar quarter of 2014 and 2015. The fair value of the contingent consideration as of the acquisition date was $22.7 million.

We performed our annual impairment testing in the fourth quarter of fiscal 2013 for the goodwill and indefinite-lived intangible asset related to the acquisition of AutoAnything. Based on an analysis of AutoAnything’s revised planned financial results compared to the initial projections, we determined it was more likely than not the goodwill attributed to AutoAnything was impaired. Accordingly, we performed a goodwill impairment test by comparing the fair value of the reporting unit with its carrying amount, including goodwill. Because the fair value of the reporting unit was lower than its carrying value, we recorded a goodwill impairment charge of $18.3 million during the fourth quarter of fiscal 2013. Based on our evaluation of the future discounted cash flows of AutoAnything’s trade name as compared to its carrying value, it was determined that AutoAnything’s trade name was also impaired. We recorded an impairment charge of $4.1 million during the fourth quarter of fiscal 2013 related to the trade name.

Based on the revised plan financial results, we also determined AutoAnything is not likely to achieve the operating income targets necessary to earn the contingent consideration. Therefore, we adjusted the fair value of the contingent consideration at August 31, 2013 to $0.2 million, resulting in a decrease to the contingent consideration liability of $23.3 million during the fourth quarter of fiscal 2013. The net impact of the impairment charges and the contingent consideration adjustment is a gain of $0.9 million. The net impact is included in Operating, selling, general and administrative expenses in our Other business activities.

Fiscal 2012 Compared with Fiscal 2011

For the fiscal year ended August 25, 2012, we reported net sales of $8.604 billion compared with $8.073 billion for the year ended August 27, 2011, a 6.6% increase from fiscal 2011. This growth was driven primarily by an increase in domestic same store sales of 3.9% and sales from new stores of $214.2 million. The improvement in domestic same store sales was driven by higher transaction value, partially offset by decreased transaction counts.

At August 25, 2012, we operated 4,685 domestic stores and 321 stores in Mexico, compared with 4,534 domestic stores and 279 stores in Mexico at August 27, 2011. We reported a total auto parts (domestic and Mexico operations) sales increase of 6.5% for fiscal 2012.

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Gross profit for fiscal 2012 was $4.432 billion, or 51.5% of net sales, compared with $4.119 billion, or 51.0% of net sales for fiscal 2011. The improvement in gross margin was primarily attributable to higher merchandise margins (19 basis points) and lower shrink expense (17 basis points). Lower acquisition costs drove the higher merchandise margins for the year.

Operating, selling, general and administrative expenses for fiscal 2012 increased to $2.803 billion, or 32.6% of net sales, from $2.625 billion, or 32.5% of net sales for fiscal 2011. The slight increase in operating expenses, as a percentage of sales, was the result of higher self-insurance costs (42 basis points); partially offset by lower incentive compensation (30 basis points).

Interest expense, net for fiscal 2012 was $175.9 million compared with $170.6 million during fiscal 2011. This increase was primarily due to higher average borrowing levels over the comparable prior year period; partially offset by a decline in borrowing rates. Average borrowings for fiscal 2012 were $3.507 billion, compared with $3.103 billion for fiscal 2011 and weighted average borrowing rates were 4.7% for fiscal 2012, compared to 5.1% for fiscal 2011.

Our effective income tax rate was 36.0% of pre-tax income for fiscal 2012 compared to 35.9% for fiscal 2011.

Net income for fiscal 2012 increased by 9.6% to $930.4 million, and diluted earnings per share increased 20.6% to $23.48 from $19.47 in fiscal 2011. The impact of the fiscal 2012 stock repurchases on diluted earnings per share in fiscal 2012 was an increase of approximately $0.96.

Seasonality and Quarterly Periods

Our business is somewhat seasonal in nature, with the highest sales typically occurring in the spring and summer months of February through September, in which average weekly per-store sales historically have been about 15% to 25% higher than in the slower months of December and January. During short periods of time, a store’s sales can be affected by weather conditions. Extremely hot or extremely cold weather may enhance sales by causing parts to fail; thereby increasing sales of seasonal products. Mild or rainy weather tends to soften sales, as parts failure rates are lower in mild weather, with elective maintenance deferred during periods of rainy weather. Over the longer term, the effects of weather balance out, as we have stores throughout the United States, Puerto Rico, Mexico and Brazil.

Each of the first three quarters of our fiscal year consists of 12 weeks, and the fourth quarter consisted of 17 weeks in 2013 and 16 weeks in 2012 and 2011. Because the fourth quarter contains seasonally high sales volume and consists of 16 or 17 weeks, compared with 12 weeks for each of the first three quarters, our fourth quarter represents a disproportionate share of the annual net sales and net income. The fourth quarter of fiscal year 2013 represented 33.8% of annual sales and 36.5% of net income; the fourth quarter of fiscal 2012 represented 32.1% of annual sales and 34.8% of net income; and the fourth quarter of fiscal 2011 represented 32.7% of annual sales and 35.5% of net income.

Liquidity and Capital Resources

The primary source of our liquidity is our cash flows realized through the sale of automotive parts and products. Net cash provided by operating activities was $1.415 billion in fiscal 2013, $1.224 billion in fiscal 2012, and $1.292 billion in fiscal 2011. Cash flows from operations are favorable to last year due to the change in inventories net of payables and the growth in net income. We had an accounts payable to inventory ratio of 115.6% at August 31, 2013, 111.4% at August 25, 2012, and 111.7% at August 27, 2011. Our inventory increases are primarily attributable to our efforts to update product assortments in all of our stores and an increased number of stores. During fiscal 2013, we initiated a variety of strategic inventory tests focused on increasing inventory availability, which increased our inventory per store. Many of our vendors have supported our initiative to update our product assortments by providing extended payment terms. These extended payment terms have allowed us to continue our high accounts payable to inventory ratio.

Our primary capital requirement has been the funding of our continued new-store development program. From the beginning of fiscal 2011 to August 31, 2013, we have opened 578 new stores. Net cash flows used in investing activities were $527.3 million in fiscal 2013, compared to $374.8 million in fiscal 2012, and $319.0 million in

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fiscal 2011. We invested $414.5 million in capital assets in fiscal 2013, compared to $378.1 million in fiscal 2012, and $321.6 million in fiscal 2011. The increase in capital expenditures during this time was primarily attributable to the number and types of stores opened and increased investment in our existing stores. New store openings were 197 for fiscal 2013, 193 for fiscal 2012, and 188 for fiscal 2011. Cash flows used in the acquisition of AutoAnything were $116.1 million during fiscal 2013. There were no acquisitions in fiscal 2012 or fiscal 2011. We invest a portion of our assets held by our wholly owned insurance captive in marketable securities. We purchased $44.5 million of marketable securities in fiscal 2013, $45.7 million in fiscal 2012, and $43.8 million in fiscal 2011. We had proceeds from the sale of marketable securities of $37.9 million in fiscal 2013, $42.4 million in fiscal 2012, and $43.1 million in fiscal 2011. Capital asset disposals provided proceeds of $9.8 million in fiscal 2013, $6.6 million in fiscal 2012, and $3.3 million in fiscal 2011.

Net cash used in financing activities was $847.0 million in fiscal 2013, $843.4 million in fiscal 2012, and $973.8 million in fiscal 2011. The net cash used in financing activities reflected purchases of treasury stock which totaled $1.387 billion for fiscal 2013, $1.363 billion for fiscal 2012, and $1.467 billion for fiscal 2011. The treasury stock purchases in fiscal 2013, 2012 and 2011 were primarily funded by cash flows from operations, and by increases in debt levels. Proceeds from issuance of debt were $800 million for fiscal 2013, $500 million for fiscal 2012, and $500 million for fiscal 2011. In fiscal 2013 and fiscal 2012, the proceeds from the issuance of debt were used for the repayment of a portion of commercial paper borrowings and general corporate purposes, including for working capital requirements, capital expenditures, store openings and stock repurchases. Proceeds from the issuance of debt in fiscal 2013 were also used for the acquisition of AutoAnything. In fiscal 2013, we repaid our $200 million Senior Notes due in June 2013 and our $300 million Senior Notes due in October 2012 using commercial paper borrowings. There were no repayments of debt in fiscal 2012. In fiscal 2011, we used the proceeds from the issuance of debt to repay our $199.3 million Senior Notes due in November 2010, to repay a portion of our commercial paper borrowings and for general corporate purposes. In 2013, we received proceeds from the issuance of commercial paper and short-term borrowings in the amount of $118.7 million. In 2012, net payments of commercial paper and short-term borrowings were $81.3 million. In 2011, we received proceeds from the issuance of commercial paper and short-term borrowing in the amount of $141.5 million.

During fiscal 2014, we expect to invest in our business at an increased rate as compared to fiscal 2013. Our investments are expected to be directed primarily to our new-store development program and enhancements to existing stores and infrastructure. The amount of our investments in our new-store program is impacted by different factors, including such factors as whether the building and land are purchased (requiring higher investment) or leased (generally lower investment), located in the United States, Mexico or Brazil, or located in urban or rural areas. During fiscal 2013, fiscal 2012, and fiscal 2011, our capital expenditures have increased by approximately 10%, 18% and 2%, respectively, as compared to the prior year. Our mix of store openings has moved away from build-to-suit leases (lower initial capital investment) to ground leases and land purchases (higher initial capital investment), resulting in increased capital expenditures per store over the previous three years, and we expect this trend to continue during the fiscal year ending August 30, 2014.

In addition to the building and land costs, our new-store development program requires working capital, predominantly for inventories. Historically, we have negotiated extended payment terms from suppliers, reducing the working capital required and resulting in a high accounts payable to inventory ratio. We plan to continue leveraging our inventory purchases; however, our ability to do so may be limited by our vendors’ capacity to factor their receivables from us. Certain vendors participate in financing arrangements with financial institutions whereby they factor their receivables from us, allowing them to receive payment on our invoices at a discounted rate.

Depending on the timing and magnitude of our future investments (either in the form of leased or purchased properties or acquisitions), we anticipate that we will rely primarily on internally generated funds and available borrowing capacity to support a majority of our capital expenditures, working capital requirements and stock repurchases. The balance may be funded through new borrowings. We anticipate that we will be able to obtain such financing in view of our credit ratings and favorable experiences in the debt markets in the past.

Our cash balances are held in various locations around the world. Of the $142.2 million and $103.1 million of cash and cash equivalents at August 31, 2013, and August 25, 2012, respectively, $38.2 million and $7.8 million, respectively, were held outside of the U.S. and were generally utilized to support liquidity needs in our foreign operations. We intend to continue to permanently reinvest the cash held outside of the U.S. in our foreign operations.

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For the fiscal year ended August 31, 2013, our after-tax return on invested capital (“ROIC”) was 32.7% as compared to 33.0% for the comparable prior year period. ROIC is calculated as after-tax operating profit (excluding rent charges) divided by average invested capital (which includes a factor to capitalize operating leases). The decrease in ROIC is primarily due to the acquisition of AutoAnything. We use ROIC to evaluate whether we are effectively using our capital resources and believe it is an important indicator of our overall operating performance.

Debt Facilities

In September 2011, we amended and restated our $800 million revolving credit facility, which was scheduled to expire in July 2012. The capacity under the revolving credit facility was increased to $1.0 billion. This credit facility is available to primarily support commercial paper borrowings, letters of credit and other short-term, unsecured bank loans. The capacity of the credit facility may be increased to $1.250 billion prior to the maturity date at our election and subject to bank credit capacity and approval, may include up to $200 million in letters of credit, and may include up to $175 million in capital leases each fiscal year. Under the revolving credit facility, we may borrow funds consisting of Eurodollar loans or base rate loans. Interest accrues on Eurodollar loans at a defined Eurodollar rate, defined as the London InterBank Offered Rate (“LIBOR”) plus the applicable percentage, as defined in the revolving credit facility, depending upon our senior, unsecured, (non-credit enhanced) long-term debt rating. Interest accrues on base rate loans as defined in the revolving credit facility. We also have the option to borrow funds under the terms of a swingline loan subfacility. The revolving credit facility expires in September 2016.

The revolving credit facility agreement requires that our consolidated interest coverage ratio as of the last day of each quarter shall be no less than 2.50:1. This ratio is defined as the ratio of (i) consolidated earnings before interest, taxes and rents to (ii) consolidated interest expense plus consolidated rents. Our consolidated interest coverage ratio as of August 31, 2013 was 4.68:1.

As of August 31, 2013, $637 million of commercial paper borrowings and $326.3 million of the 6.500% Senior Notes due January 2014 are classified as long-term in the Consolidated Balance Sheets as we have the ability and intent to refinance on a long-term basis through available capacity in our revolving credit facility. As of August 31, 2013, we had $963.3 million of availability under our $1.0 billion revolving credit facility, expiring in September 2016 that would allow us to replace these short-term obligations with long-term financing.

In addition to the revolving credit facility, we also maintain a letter of credit facility that allows us to request the participating bank to issue letters of credit on our behalf up to an aggregate amount of $100 million. As of August 31, 2013, we have $99.4 million in letters of credit outstanding under the letter of credit facility, which expires in June 2016.

In addition to the outstanding letters of credit issued under the committed facilities discussed above, we had $41.8 million in letters of credit outstanding as of August 31, 2013. These letters of credit have various maturity dates and were issued on an uncommitted basis.

On April 29, 2013, we issued $500 million in 3.125% Senior Notes due July 2023 under our shelf registration statement filed with the SEC on April 17, 2012 (the “Shelf Registration”). The Shelf Registration allows us to sell an indeterminate amount in debt securities to fund general corporate purposes, including repaying, redeeming or repurchasing outstanding debt and for working capital, capital expenditures, new store openings, stock repurchases and acquisitions. Proceeds from the debt issuance on April 29, 2013, were used to repay a portion of the outstanding commercial paper borrowings and for general corporate purposes. We used commercial paper borrowings to repay the $200 million in 4.375% Senior Notes due June 2013.

On November 13, 2012, we issued $300 million in 2.875% Senior Notes due January 2023 under the Shelf Registration. Proceeds from the debt issuance on November 13, 2012, were used to repay a portion of the outstanding commercial paper borrowings, which were used to repay the $300 million in 5.875% Senior Notes due in October 2012, and for general corporate purposes.

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On April 24, 2012, we issued $500 million in 3.700% Senior Notes due April 2022 under the Shelf Registration. Proceeds from the debt issuance on April 24, 2012, were used to repay a portion of the commercial paper borrowings and for general corporate purposes. On November 15, 2010, we issued $500 million in 4.000% Senior Notes due 2020 under a shelf registration statement filed with the Securities and Exchange Commission on July 29, 2008. We used the proceeds from the November 15, 2010 issuance of debt to repay the principal due relating to the 4.750% Senior Notes that matured on November 15, 2010, to repay a portion of the commercial paper borrowings and for general corporate purposes.

The 5.750% Senior Notes issued in July 2009 and the 6.500% and 7.125% Senior Notes issued during August 2008, (collectively, the “Notes”), are subject to an interest rate adjustment if the debt ratings assigned to the Notes are downgraded. The Notes, along with the 3.125% Senior Notes issued in April 2013, the 2.875% Senior Notes issued in November 2012, the 3.700% Senior Notes issued in April 2012 and the 4.000% Senior Notes issued in during November 2010, also contain a provision that repayment of the notes may be accelerated if we experience a change in control (as defined in the agreements). Our borrowings under our other senior notes contain minimal covenants, primarily restrictions on liens. Under our revolving credit facility, covenants include limitations on total indebtedness, restrictions on liens, a maximum debt to earnings ratio, and a change of control provision that may require acceleration of the repayment obligations under certain circumstances. These covenants are in addition to the consolidated interest coverage ratio discussed above. All of the repayment obligations under our borrowing arrangements may be accelerated and come due prior to the scheduled payment date if covenants are breached or an event of default occurs.

As of August 31, 2013, we were in compliance with all covenants related to our borrowing arrangements and expect to remain in compliance with those covenants in the future.

For the fiscal year ended August 31, 2013, our adjusted debt to earnings before interest, taxes, depreciation, amortization, rent and share-based compensation expense (“EBITDAR”) ratio was 2.5:1 as compared to 2.5:1 as of the comparable prior year end. We calculate adjusted debt as the sum of total debt, capital lease obligations and rent times six; and we calculate EBITDAR by adding interest, taxes, depreciation, amortization, rent and share-based compensation expense to net income. We target our debt levels to a ratio of adjusted debt to EBITDAR in order to maintain our investment grade credit ratings. We believe this is important information for the management of our debt levels.

Stock Repurchases

During 1998, we announced a program permitting us to repurchase a portion of our outstanding shares not to exceed a dollar maximum established by our Board of Directors (the “Board”). On June 11, 2013, the Board voted to increase the authorization by $750 million to raise the cumulative share repurchase authorization from $12.65 billion to $13.40 billion. From January 1998 to August 31, 2013, we have repurchased a total of 134.6 million shares at an aggregate cost of $12.93 billion. We repurchased 3.5 million shares of common stock at an aggregate cost of $1.39 billion during fiscal 2013, 3.8 million shares of common stock at an aggregate cost of $1.36 billion during fiscal 2012, and 5.6 million shares of common stock at an aggregate cost of $1.47 billion during fiscal 2011. Considering cumulative repurchases as of August 31, 2013, we have $468.4 million remaining under the Board of Director’s authorization to repurchase our common stock.

Subsequent to August 31, 2013, we have repurchased 355,150 shares of common stock at an aggregate cost of $149.8 million.

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Financial Commitments

The following table shows our significant contractual obligations as of August 31, 2013:

We have pension obligations reflected in our consolidated balance sheets that are not reflected in the table above due to the absence of scheduled maturities and the nature of the account. During fiscal 2013, we made contributions of $16.9 million to the pension plan. We expect to make contributions of approximately $4 million during fiscal 2014; however a change to the expected cash funding may be impacted by a change in interest rates or a change in the actual or expected return on plan assets.

As of August 31, 2013, our defined benefit obligation associated with our pension plans is $256.8 million and our pension assets are valued at $208.1 million, resulting in a net pension obligation of $48.7 million. Amounts recorded in Accumulated other comprehensive loss are $83.6 million at August 31, 2013. The balance in Accumulated other comprehensive loss will be amortized into pension expense in the future, unless the losses are recovered in future periods through actuarial gains.

Additionally, our tax liability for uncertain tax positions, including interest and penalties, was $35.4 million at August 31, 2013. Approximately $2.2 million is classified as current liabilities and $33.2 million is classified as long-term liabilities. We did not reflect these obligations in the table above as we are unable to make an estimate of the timing of payments due to uncertainties in the timing and amounts of the settlement of these tax positions.

Off-Balance Sheet Arrangements

The following table reflects outstanding letters of credit and surety bonds as of August 31, 2013:

A substantial portion of the outstanding standby letters of credit (which are primarily renewed on an annual basis) and surety bonds are used to cover reimbursement obligations to our workers’ compensation carriers. There are no additional contingent liabilities associated with these instruments as the underlying liabilities are already reflected in our consolidated balance sheets. The standby letters of credit and surety bond arrangements expire within one year, but have automatic renewal clauses.

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Reconciliation of Non-GAAP Financial Measures

“Selected Financial Data” and “Management’s Discussion and Analysis of Financial Condition and Results of Operations” include certain financial measures not derived in accordance with generally accepted accounting principles (“GAAP”). These non-GAAP financial measures provide additional information for determining our optimum capital structure and are used to assist management in evaluating performance and in making appropriate business decisions to maximize stockholders’ value.

Non-GAAP financial measures should not be used as a substitute for GAAP financial measures, or considered in isolation, for the purpose of analyzing our operating performance, financial position or cash flows. However, we have presented the non-GAAP financial measures, as we believe they provide additional information that is useful to investors as it indicates more clearly our comparative year-to-year operating results. Furthermore, our management and Compensation Committee of the Board use the above-mentioned non-GAAP financial measures to analyze and compare our underlying operating results and use select measurements to determine payments of performance-based compensation. We have included a reconciliation of this information to the most comparable GAAP measures in the following reconciliation tables.

Reconciliation of Non-GAAP Financial Measure: Cash Flow Before Share Repurchases and Changes in Debt

The following table reconciles net increase (decrease) in cash and cash equivalents to cash flow before share repurchases and changes in debt, which is presented in “Selected Financial Data”:

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Reconciliation of Non-GAAP Financial Measure: After-tax Return on Invested Capital

The following table calculates the percentage of ROIC. ROIC is calculated as after-tax operating profit (excluding rent) divided by average invested capital (which includes a factor to capitalize operating leases). The ROIC percentages are presented in “Selected Financial Data” and “Management’s Discussion and Analysis of Financial Condition and Results of Operations”:

Reconciliation of Non-GAAP Financial Measure: Fiscal 2013 Results Excluding Impact of 53^rd Week:

The following table summarizes the impact of the additional week to the 53 week fiscal year ended August 31, 2013.

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Reconciliation of Non-GAAP Financial Measure: Adjusted Debt to EBITDAR

The following table calculates the ratio of adjusted debt to EBITDAR. Adjusted debt to EBITDAR is calculated as the sum of total debt, capital lease obligations and annual rents times six; divided by net income plus interest, taxes, depreciation, amortization, rent and share-based compensation expense. The adjusted debt to EBITDAR ratios are presented in “Selected Financial Data” and “Management’s Discussion and Analysis of Financial Condition and Results of Operations”:

Recent Accounting Pronouncements

See Note A of the Notes to Consolidated Financial Statements for a discussion on recent accounting pronouncements.

Critical Accounting Policies and Estimates

Preparation of our consolidated financial statements requires us to make estimates and assumptions affecting the reported amounts of assets and liabilities at the date of the financial statements, reported amounts of revenues and expenses during the reporting period and related disclosures of contingent liabilities. In the notes to our consolidated financial statements, we describe our significant accounting policies used in preparing the consolidated financial statements. Our policies are evaluated on an ongoing basis and are drawn from historical experience and other assumptions that we believe to be reasonable under the circumstances. Actual results could differ under different assumptions or conditions. Our senior management has identified the critical accounting policies for the areas that are materially impacted by estimates and assumptions and have discussed such policies with the Audit Committee of our Board. The following items in our consolidated financial statements represent our critical accounting policies that require significant estimation or judgment by management:

Inventory Reserves and Cost of Sales

LIFO

We state our inventories at the lower of cost or market using the last-in, first-out (“LIFO”) method for domestic merchandise and the first-in, first out (“FIFO”) method for Mexico inventories. Due to price deflation on our merchandise purchases, our domestic inventory balances are effectively maintained under the FIFO method. We do not write up inventory for favorable LIFO adjustments, and due to price deflation, LIFO costs of our domestic inventories exceed replacement costs by $283.7 million at August 31, 2013, calculated using the dollar value method.

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Inventory Obsolescence and Shrinkage

Our inventory, primarily hard parts, maintenance items, accessories and non-automotive products, is used on vehicles that have rather long lives; and therefore, the risk of obsolescence is minimal and the majority of excess inventory has historically been returned to our vendors for credit. In the isolated instances where less than full credit will be received for such returns and where we anticipate that items will be sold at retail prices that are less than recorded costs, we record a charge (less than $20 million in each of the last three years) through cost of sales for the difference. These charges are based on management’s judgment, including estimates and assumptions regarding marketability of products and the market value of inventory to be sold in future periods.

Historically, we have not encountered material exposure to inventory obsolescence or excess inventory, nor have we experienced material changes to our estimates. However, we may be exposed to material losses should our vendors alter their policy with regard to accepting excess inventory returns.

Additionally, we reduce inventory for projected losses related to shrinkage, which is estimated based on historical losses and current inventory loss trends resulting from previous physical inventories. Shrinkage may occur due to theft, loss or inaccurate records for the receipt of goods, among other things. Throughout the year, we take physical inventory counts of our stores and distribution centers to verify these estimates. We make assumptions regarding upcoming physical inventory counts that may differ from actual results. Over the last three years, there has been less than a 50 basis point fluctuation in our shrinkage rate.

Each quarter, we evaluate the accrued shrinkage in light of the actual shrink results. To the extent our actual physical inventory count results differ from our estimates, we may experience material adjustments to our financial statements. Historically, we have not experienced material adjustments to our shrinkage estimates and do not believe there is a reasonable likelihood that there will be a material change in the future estimates or assumptions we use.

A 10% difference in our inventory reserves as of August 31, 2013, would have affected net income by approximately $6 million in fiscal 2013.

Vendor Allowances

We receive various payments and allowances from our vendors through a variety of programs and arrangements, including allowances for warranties, advertising and general promotion of vendor products. Vendor allowances are treated as a reduction of inventory, unless they are provided as a reimbursement of specific, incremental, identifiable costs incurred by the Company in selling the vendor’s products. Approximately 87% of the vendor funds received are recorded as a reduction of the cost of inventories and recognized as a reduction to cost of sales as these inventories are sold.

Based on our vendor agreements, a significant portion of vendor funding we receive is based on our inventory purchases. Therefore, we record receivables for funding earned but not yet received as we purchase inventory. During the year, we regularly review the receivables from vendors to ensure vendors are able to meet their obligations. We generally have not recorded a reserve against these receivables as we have legal right of offset with our vendors for payments owed them. Historically, we have had write-offs less than $500 thousand in each of the last three years.

Goodwill and Intangibles

We evaluate goodwill and indefinite-lived intangibles for impairment annually in the fourth quarter of each fiscal year or whenever events or changes in circumstances indicate the carrying values exceeds the current fair value. We evaluate the likelihood of impairment by considering qualitative factors, such as macroeconomic, industry, market, or any other factors that could impact the reporting unit’s fair value. If these factors indicate impairment, we perform a quantitative assessment to determine if the carrying value exceeds the fair value. Goodwill is evaluated at the reporting unit level and involves valuation methods including forecasting future financial performance, estimates of discount rates, and other factors. If the carrying value of the reporting unit’s goodwill exceeds the fair value, we recognize an impairment loss.

Indefinite-lived intangibles are evaluated by comparing the carrying amount of the asset to the future discounted cash flows that the asset is expected to generate. If the carrying value of the indefinite-lived intangible asset

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exceeds the fair value based on the future discounted cash flows, we recognize an impairment loss. These impairment analyses require a significant amount of subjective judgment by management, and as a result these estimates are uncertain and our actual results may be different from our estimates.

The carrying value of goodwill at August 31, 2013 and August 25, 2012 was $367.8 million and $302.6 million, respectively. During fiscal fourth quarter of 2013, we recorded an $18.3 million goodwill impairment charge in our Other business activities related to the goodwill of AutoAnything and a $4.1 million impairment charge to AutoAnything’s trade name. The $4.1 million impairment charge resulted in a remaining carrying value of $24.6 million at August 31, 2013. No indefinite-lived intangible amounts were recorded at August 25, 2012. We also determined AutoAnything is not likely to achieve the operating income targets necessary to earn the contingent consideration. Therefore, these impairment charges were offset by an adjustment of $23.3 million to the contingent consideration liability to reflect its fair value at August 31, 2013. No impairment charges were recognized in our Other business activities in previous fiscal years. No impairment charges were recognized in the Auto Parts Stores reporting segment during fiscal 2013 or in previous fiscal years. We do not believe there is a reasonable likelihood that there will be a material change in the future estimates or assumptions used to evaluate goodwill or indefinite-lived intangibles.

Self-Insurance Reserves

We retain a significant portion of the risks associated with workers’ compensation, employee health, general and products liability, property and vehicle liability; and we obtain third party insurance to limit the exposure related to certain of these risks. Our self-insurance reserve estimates totaled $190.2 million at August 31, 2013, and $175.8 million at August 25, 2012. This change is primarily reflective of our growing operations, including inflation, increases in health care costs, the number of vehicles and the number of hours worked, as well as our historical claims experience and changes in our discount rate.

The assumptions made by management in estimating our self-insurance reserves include consideration of historical cost experience, judgments about the present and expected levels of cost per claim and retention levels. We utilize various methods, including analyses of historical trends and actuarial methods, to estimate the cost to settle reported claims, and claims incurred but not yet reported. The actuarial methods develop estimates of the future ultimate claim costs based on the claims incurred as of the balance sheet date. When estimating these liabilities, we consider factors, such as the severity, duration and frequency of claims, legal costs associated with claims, healthcare trends, and projected inflation of related factors. In recent history, our methods for determining our exposure have remained consistent, and our historical trends have been appropriately factored into our reserve estimates. As we obtain additional information and refine our methods regarding the assumptions and estimates we use to recognize liabilities incurred, we will adjust our reserves accordingly.

Management believes that the various assumptions developed and actuarial methods used to determine our self-insurance reserves are reasonable and provide meaningful data and information that management uses to make its best estimate of our exposure to these risks. Arriving at these estimates, however, requires a significant amount of subjective judgment by management, and as a result these estimates are uncertain and our actual exposure may be different from our estimates. For example, changes in our assumptions about health care costs, the severity of accidents and the incidence of illness, the average size of claims and other factors could cause actual claim costs to vary materially from our assumptions and estimates, causing our reserves to be overstated or understated. For instance, a 10% change in our self-insurance liability would have affected net income by approximately $12 million for fiscal 2013.

Our liabilities for workers’ compensation, certain general and product liability, property and vehicle claims do not have scheduled maturities; however, the timing of future payments is predictable based on historical patterns and is relied upon in determining the current portion of these liabilities. Accordingly, we reflect the net present value of the obligations we determine to be long-term using the risk-free interest rate as of the balance sheet date. If the discount rate used to calculate the present value of these reserves changed by 50 basis points, net income would have been affected by approximately $2 million for fiscal 2013. Our liability for health benefits is classified as current, as the historical average duration of claims is approximately six weeks.

Income Taxes

Our income tax returns are audited by state, federal and foreign tax authorities, and we are typically engaged in various tax examinations at any given time. Tax contingencies often arise due to uncertainty or differing interpretations of the application of tax rules throughout the various jurisdictions in which we operate. The

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contingencies are influenced by items such as tax audits, changes in tax laws, litigation, appeals and prior experience with similar tax positions. We regularly review our tax reserves for these items and assess the adequacy of the amount we have recorded. As of August 31, 2013, we had approximately $35.4 million reserved for uncertain tax positions.

We evaluate potential exposures associated with our various tax filings by estimating a liability for uncertain tax positions based on a two-step process. The first step is to evaluate the tax position for recognition by determining if the weight of available evidence indicates that it is more likely than not that the position will be sustained on audit, including resolution of related appeals or litigation processes, if any. The second step requires us to estimate and measure the tax benefit as the largest amount that is more than 50% likely to be realized upon ultimate settlement.

We believe our estimates to be reasonable and have not experienced material adjustments to our reserves in the previous three years; however, actual results could differ from our estimates, and we may be exposed to gains or losses that could be material. Specifically, management has used judgment and made assumptions to estimate the likely outcome of uncertain tax positions. Additionally, to the extent we prevail in matters for which a liability has been established, or must pay in excess of recognized reserves, our effective tax rate in any particular period could be materially affected.

Pension Obligation

Prior to January 1, 2003, substantially all full-time employees were covered by a qualified defined benefit pension plan. The benefits under the plan were based on years of service and the employee’s highest consecutive five-year average compensation. On January 1, 2003, the plan was frozen. Accordingly, pension plan participants will earn no new benefits under the plan formula and no new participants will join the pension plan. On January 1, 2003, our supplemental, unqualified defined benefit pension plan for certain highly compensated employees was also frozen. Accordingly, plan participants will earn no new benefits under the plan formula and no new participants will join the pension plan. As the plan benefits are frozen, the annual pension expense and recorded liabilities are not impacted by increases in future compensation levels, but are impacted by the use of two key assumptions in the calculation of these balances:

Expected long-term rate of return on plan assets: For the fiscal year ended August 31, 2013, we have assumed a 7.5% long-term rate of return on our plan assets. This estimate is a judgmental matter in which management considers the composition of our asset portfolio, our historical long-term investment performance and current market conditions. We review the expected long-term rate of return on an annual basis, and revise it accordingly. Additionally, we monitor the mix of investments in our portfolio to ensure alignment with our long-term strategy to manage pension cost and reduce volatility in our assets. At August 31, 2013, our plan assets totaled $208 million in our qualified plan. Our assets are generally valued using the net asset values, which are determined by valuing investments at the closing price or last trade reported on the major market on which the individual securities are traded. We have no assets in our nonqualified plan. A 50 basis point change in our expected long term rate of return would impact annual pension expense by approximately $1 million for the qualified plan.

Discount rate used to determine benefit obligations: This rate is highly sensitive and is adjusted annually based on the interest rate for long-term, high-quality, corporate bonds as of the measurement date using yields for maturities that are in line with the duration of our pension liabilities. This same discount rate is also used to determine pension expense for the following plan year. For fiscal 2013, we assumed a discount rate of 5.2%. A decrease in the discount rate increases our projected benefit obligation and pension expense. A 50 basis point change in the discount rate at August 31, 2013 would impact annual pension expense/income by approximately $2 million for the qualified plan and $30 thousand for the nonqualified plan.

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Item 7A. Quantitative and Qualitative Disclosures about Market Risk

We are exposed to market risk from, among other things, changes in interest rates, foreign exchange rates and fuel prices. From time to time, we use various derivative instruments to reduce interest rate and fuel price risks. To date, based upon our current level of foreign operations, no derivative instruments have been utilized to reduce foreign exchange rate risk. All of our hedging activities are governed by guidelines that are authorized by the Board. Further, we do not buy or sell derivative instruments for trading purposes.

Interest Rate Risk

Our financial market risk results primarily from changes in interest rates. At times, we reduce our exposure to changes in interest rates by entering into various interest rate hedge instruments such as interest rate swap contracts, treasury lock agreements and forward-starting interest rate swaps.

We have historically utilized interest rate swaps to convert variable rate debt to fixed rate debt and to lock in fixed rates on future debt issuances. We reflect the current fair value of all interest rate hedge instruments as a component of either other current assets or accrued expenses and other. Our interest rate hedge instruments are designated as cash flow hedges.

Unrealized gains and losses on interest rate hedges are deferred in stockholders’ deficit as a component of Accumulated other comprehensive loss. These deferred gains and losses are recognized in income as a decrease or increase to interest expense in the period in which the related cash flows being hedged are recognized in expense. However, to the extent that the change in value of an interest rate hedge instrument does not perfectly offset the change in the value of the cash flow being hedged, that ineffective portion is immediately recognized in earnings.

During the fourth quarter of fiscal 2012, we entered into two treasury rate locks, each with a notional amount of $100 million. These agreements were cash flow hedges used to hedge the exposure to variability in future cash flows resulting from changes in variable interest rates related to the $300 million Senior Note debt issuance in November 2012. The fixed rates of the hedges were 2.07% and 1.92% and were benchmarked based on the 10-year U.S. treasury notes. These locks expired on November 1, 2012 and resulted in a loss of $5.1 million, which has been deferred in Accumulated other comprehensive loss and will be reclassified to Interest expense over the life of the underlying debt. The hedges remained highly effective until they expired, and no ineffectiveness was recognized in earnings.

During the third quarter of fiscal 2012, we entered into two treasury rate locks. These agreements were designated as cash flow hedges and were used to hedge the exposure to variability in future cash flows resulting from changes in variable interest rates related to the $500 million Senior Note debt issuance in April 2012. The treasury rate locks had notional amounts of $300 million and $100 million with associated fixed rates of 2.09% and 2.07% respectively. The locks were benchmarked based on the 10-year U.S. treasury notes. These locks expired on April 20, 2012 and resulted in a loss of $2.8 million, which has been deferred in Accumulated other comprehensive loss and will be reclassified to Interest expense over the life of the underlying debt. The hedges remained highly effective until they expired, and no ineffectiveness was recognized in earnings.

The fair value of our debt was estimated at $4.259 billion as of August 31, 2013, and $4.055 billion as of August 25, 2012, based on the quoted market prices for the same or similar debt issues or on the current rates available to us for debt having the same remaining maturities. Such fair value is greater than the carrying value of debt by $72.2 million and $286.6 million at August 31, 2013 and August 25, 2012, respectively. We had $637.0 million of variable rate debt outstanding at August 31, 2013, and $518.2 million of variable rate debt outstanding at August 25, 2012. In fiscal 2013, at this borrowing level for variable rate debt, a one percentage point increase in interest rates would have had an unfavorable impact on our pre-tax earnings and cash flows of approximately $6 million. The primary interest rate exposure on variable rate debt is based on LIBOR. We had outstanding fixed rate debt of $3.550 billion at August 31, 2013, and $3.250 billion at August 25, 2012. A one percentage point increase in interest rates would reduce the fair value of our fixed rate debt by approximately $128.4 million at August 31, 2013.

Fuel Price Risk

From time to time, we utilize fuel swap contracts in order to lower fuel cost volatility in our operating results. Historically, the instruments were executed to economically hedge a portion of our diesel and unleaded fuel

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exposure. However, we have not designated the fuel swap contracts as hedging instruments; and therefore, the contracts have not qualified for hedge accounting treatment. We did not enter into any fuel swap contracts during fiscal 2013, fiscal 2012 or fiscal 2011.

Foreign Currency Risk

Foreign currency exposures arising from transactions include firm commitments and anticipated transactions denominated in a currency other than our entities’ functional currencies. To minimize our risk, we generally enter into transactions denominated in the respective functional currencies. Foreign currency exposures arising from transactions denominated in currencies other than the functional currency are not material.

We are exposed to euros, Canadian dollars, and Brazilian reals, but our primary foreign currency exposure arises from Mexican peso-denominated revenues and profits and their translation into U.S. dollars.

We view our investments in Mexican subsidiaries as long-term. As a result, we generally do not hedge these net investments. The net asset exposure in the Mexican subsidiaries translated into U.S. dollars using the year-end exchange rates was $378.7 million at August 31, 2013 and $315.7 million at August 25, 2012. The year-end exchange rates with respect to the Mexican peso decreased by approximately 1.1% with respect to the U.S. dollar during fiscal 2013 and decreased by approximately 6.2% during fiscal 2012. The potential loss in value of our net assets in the Mexican subsidiaries resulting from a hypothetical 10 percent adverse change in quoted foreign currency exchange rates at August 31, 2013 and August 25, 2012, amounted to approximately $34 million and approximately $29 million, respectively. Any changes in our net assets in the Mexican subsidiaries relating to foreign currency exchange rates would be reflected in the foreign currency translation component of Accumulated other comprehensive loss, unless the Mexican subsidiaries are sold or otherwise disposed. A hypothetical 10 percent adverse change in average exchange rates would not have a material impact on our results of operations.

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Item 8. Financial Statements and Supplementary Data

Index

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Management’s Report on Internal Control Over Financial Reporting

Our management is responsible for establishing and maintaining adequate internal control over financial reporting (as defined in Rules 13a-15(f) and 15d-15(f) under the Securities Exchange Act of 1934, as amended). Our internal control over financial reporting includes, among other things, defined policies and procedures for conducting and governing our business, sophisticated information systems for processing transactions and properly trained staff. Mechanisms are in place to monitor the effectiveness of our internal control over financial reporting, including regular testing performed by the Company’s internal audit team, which is comprised of Company personnel. Actions are taken to correct deficiencies as they are identified. Our procedures for financial reporting include the active involvement of senior management, our Audit Committee and a staff of highly qualified financial and legal professionals.

Management, with the participation of our principal executive and financial officers, assessed our internal control over financial reporting as of August 31, 2013, the end of our fiscal year. Management based its assessment on criteria established in Internal Control—Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission 1992 framework.

Based on this assessment, management has concluded that our internal control over financial reporting was effective as of August 31, 2013.

Our independent registered public accounting firm, Ernst & Young LLP, audited the effectiveness of our internal control over financial reporting. Ernst & Young LLP’s attestation report on the Company’s internal control over financial reporting as of August 31, 2013 is included in this Annual Report on Form 10-K.

Certifications

Compliance with NYSE Corporate Governance Listing Standards

On January 2, 2013, the Company submitted to the New York Stock Exchange the Annual CEO Certification required pursuant to Section 303A.12(a) of the New York Stock Exchange Listed Company Manual.

Rule 13a-14(a) Certifications of Principal Executive Officer and Principal Financial Officer

The Company has filed, as exhibits to its Annual Report on Form 10-K for the fiscal year ended August 31, 2013, the certifications of its Principal Executive Officer and Principal Financial Officer required pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

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Report of Independent Registered Public Accounting Firm

The Board of Directors and Stockholders of AutoZone, Inc.

We have audited AutoZone, Inc.’s internal control over financial reporting as of August 31, 2013, based on criteria established in Internal Control—Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission 1992 framework (the “COSO criteria”). AutoZone, Inc.’s management is responsible for maintaining effective internal control over financial reporting, and for its assessment of the effectiveness of internal control over financial reporting included in the accompanying Management’s Report on Internal Control over Financial Reporting. Our responsibility is to express an opinion on AutoZone, Inc.’s internal control over financial reporting based on our audit.

We conducted our audit in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether effective internal control over financial reporting was maintained in all material respects. Our audit included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, testing and evaluating the design and operating effectiveness of internal control based on the assessed risk, and performing such other procedures as we considered necessary in the circumstances. We believe that our audit provides a reasonable basis for our opinion.

A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

In our opinion, AutoZone, Inc. maintained, in all material respects, effective internal control over financial reporting as of August 31, 2013, based on the COSO criteria.

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), the consolidated balance sheets of AutoZone, Inc. as of August 31, 2013 and August 25, 2012, and the related consolidated statements of income, comprehensive income, stockholders’ deficit, and cash flows for each of the three years in the period ended August 31, 2013 of AutoZone, Inc. and our report dated October 28, 2013 expressed an unqualified opinion thereon.

Memphis, Tennessee

October 28, 2013

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Report of Independent Registered Public Accounting Firm

The Board of Directors and Stockholders of AutoZone, Inc.

We have audited the accompanying consolidated balance sheets of AutoZone, Inc. as of August 31, 2013 and August 25, 2012, and the related consolidated statements of income, comprehensive income, stockholders’ deficit, and cash flows for each of the three years in the period ended August 31, 2013. These financial statements are the responsibility of AutoZone, Inc.’s management. Our responsibility is to express an opinion on these financial statements based on our audits.

We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. An audit includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements. An audit also includes assessing the accounting principles used and significant estimates made by management, as well as evaluating the overall financial statement presentation. We believe that our audits provide a reasonable basis for our opinion.

In our opinion, the financial statements referred to above present fairly, in all material respects, the consolidated financial position of AutoZone, Inc. as of August 31, 2013 and August 25, 2012, and the consolidated results of its operations and its cash flows for each of the three years in the period ended August 31, 2013, in conformity with U.S. generally accepted accounting principles.

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), AutoZone, Inc.’s internal control over financial reporting as of August 31, 2013, based on criteria established in Internal Control—Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission 1992 framework and our report dated October 28, 2013 expressed an unqualified opinion thereon.

Memphis, Tennessee

October 28, 2013

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Consolidated Statements of Income

See Notes to Consolidated Financial Statements.

Consolidated Statements of Comprehensive Income

See Notes to Consolidated Financial Statements.

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Consolidated Balance Sheets