EXHIBIT 99.1

O'Reilly Automotive, Inc. Reports Third Quarter 2011 Results

• Third quarter comparable store sales increase of 4.8%
• Gross margin improves 50 bps to a quarterly record of 49.1%
• Record quarterly operating margin of 15.7%
• 28% increase in quarterly adjusted diluted earnings per share

SPRINGFIELD, Mo., Oct. 26, 2011 (GLOBE NEWSWIRE) -- O'Reilly Automotive, Inc. (the "Company" or "O'Reilly") (Nasdaq:ORLY), a leading retailer in the automotive aftermarket industry, today announced record revenues and earnings for its third quarter ended September 30, 2011.

3^rd Quarter Financial Results

Sales for the third quarter ended September 30, 2011, increased $110 million, or 8%, to $1.54 billion from $1.43 billion for the same period one year ago. Gross profit for the third quarter increased to $754 million (or 49.1% of sales) from $693 million (or 48.6% of sales) for the same period one year ago, representing an increase of 9%. Selling, general and administrative expenses ("SG&A") for the third quarter increased to $513 million (or 33.4% of sales) from $488 million (or 34.3% of sales) for the same period one year ago, representing an increase of 5%. Operating income for the third quarter increased to $241 million (or 15.7% of sales) from $199 million (or 14.0% of sales) for the same period one year ago, representing an increase of 21%.

Net income for the third quarter ended September 30, 2011, increased $32 million, or 27%, to $148 million (or 9.7% of sales) from $117 million (or 8.2% of sales) for the same period one year ago. Diluted earnings per common share for the third quarter increased 34% to $1.10 on 135 million shares versus $0.82 for the same period one year ago on 142 million shares.

As previously announced, the Company's results for the three months ended September 30, 2010, included a charge related to the legacy United States Department of Justice ("DOJ") investigation of CSK Auto Corporation ("CSK") into CSK's pre-acquisition historical accounting practices. The Company accrued $15.0 million during the second quarter of 2010 and an additional $5.9 million during the third quarter of 2010 in anticipation of executing a Non-Prosecution Agreement ("NPA") among the DOJ, CSK and O'Reilly and paying a one-time monetary penalty of $20.9 million. During the third quarter of 2011, the NPA was executed and the previously recorded, one-time $20.9 million penalty was paid to the DOJ on behalf of CSK.

Adjusted operating income, adjusted net income and adjusted diluted earnings per common share for the third quarter ended September 30, 2010, in the paragraph below were adjusted for the impact of the $5.9 million charge related to the legacy CSK DOJ investigation discussed above. Adjusted operating income for the third quarter ended September 30, 2011, increased 18%, to $241 million (or 15.7% of sales) from $205 million (or 14.4% of sales) for the same period one year ago. Adjusted net income for the third quarter ended September 30, 2011, increased 21%, to $148 million (or 9.7% of sales) from $122 million (or 8.6% of sales) for the same period one year ago. Adjusted diluted earnings per common share, for the third quarter ended September 30, 2011, increased 28%, to $1.10 from $0.86 for the same period one year ago. 

The table below outlines the impact of the legacy CSK DOJ investigation charge for the third quarters ended September 30, 2011 and 2010 (amounts in thousands, except per share data):

Commenting on the Company's quarterly results, Greg Henslee, Co-President and CEO stated, "We are pleased to report another successful quarter. Our results are highlighted by a solid 4.8% comparable store sales increase on top of an extremely strong comparable store sales increase of 11.1% last year, a 50 basis point improvement in gross margin and a record-breaking 15.7% operating margin. The continued trend of solid comparable store sales increases is the direct result of the hard work and commitment to unsurpassed customer service from each of our dedicated Team Members. Our relentless focus on expense control, at all levels, led to the 130 basis point improvement in adjusted operating margin. I am very pleased with the performance of Team O'Reilly and would like to thank all of our Team Members for their commitment to exceeding customer expectations."

"During the third quarter, we continued to invest in profitable growth with the opening of 50 new stores which raised our total store count to 3,707 stores in 39 states," stated Ted Wise, Co-President and COO. "Throughout the year, we opened stores in many of our existing markets, as well as several new markets, further leveraging the capacity of our comprehensive network of 23 regional distribution centers. Our nearly 50,000 Team Members remain dedicated to developing strong and lasting relationships with both our retail and professional service provider customers and to establishing the O'Reilly Brand as a symbol of the best value, customer service and parts availability in the industry."

Year-to-Date Financial Results

Sales for the first nine months of 2011 increased $310 million, or 8%, to $4.40 billion from $4.09 billion for the same period one year ago. Gross profit for the first nine months of 2011 increased to $2.14 billion (or 48.7% of sales) from $1.98 billion (or 48.6% of sales) for the same period one year ago, representing an increase of 8%. SG&A for the first nine months of 2011 increased to $1.48 billion (or 33.7% of sales) from $1.41 billion (or 34.6% of sales) for the same period one year ago, representing an increase of 5%. Operating income for the first nine months of 2011 increased to $660 million (or 15.0% of sales) from $549 million (or 13.4% of sales) for the same period one year ago, representing an increase of 20%.

Net income for the first nine months of 2011 increased $71 million, or 23%, to $385 million (or 8.7% of sales) from $314 million (or 7.7% of sales) for the same period one year ago. Diluted earnings per common share for the first nine months of 2011 increased 24% to $2.76 on 139 million shares versus $2.23 for the same period one year ago on 141 million shares.

The Company's results for the first nine months of 2011 included one-time charges associated with the new financing transactions the Company completed on January 14, 2011. These one-time charges included a non-cash charge to write off the balance of debt issuance costs related to the Company's previous credit facility in the amount of $22 million ($13 million, net of tax) and a charge related to the termination of the Company's interest rate swap agreements in the amount of $4 million ($3 million, net of tax).  The Company's results for the nine months ended September 30, 2010, included the previously discussed $20.9 million charge related to the legacy CSK DOJ investigation. 

Adjusted operating income for the first nine months of 2011 increased 16% to $660 million (or 15.0% of sales) from $570 million (or 13.9% of sales) for the same period one year ago, which was adjusted for the impact of the charges related to the legacy CSK DOJ investigation discussed above, during the first nine months of 2010. Adjusted net income, excluding the impact of the charges related to the Company's new financing transactions during the first nine months of 2011, increased 20% to $401 million (or 9.1% of sales) from $335 million (or 8.2% of sales) for the same period one year ago, which was adjusted for the impact of the charges related to the legacy CSK DOJ investigation discussed above, during the first nine months of 2010. Adjusted diluted earnings per common share, excluding the impact of the charges related to the Company's new financing transactions during the first nine months of 2011, increased 22% to $2.88 from $2.37 for the same period one year ago, which was adjusted for the impact of the charges related to the legacy CSK DOJ investigation discussed above, during the first nine months of 2010. 

The table below outlines the impact of the charges related to the new financing transactions and the legacy CSK DOJ investigation charges for the nine months ended September 30, 2011 and 2010 (amounts in thousands, except per share data):

Mr. Henslee added, "We continue to work hard to improve our free cash flow with a particular focus on improving the productivity of our net inventory investment. As of the end of the quarter, we have improved our inventory turnover, net of accounts payable, by 20% driven by improved vendor terms and a $14 million reduction of inventory since the beginning of 2011, while still opening 137 new stores. This strong improvement in net inventory investment, combined with our strong operating results, generated free cash flow of $597 million for the first nine months of 2011, an increase of $281 million over 2010. During the third quarter, we also issued $300 million of senior notes as we continue to work to balance our capital structure. Our strong free cash flow performance and our efforts to balance our capital structure have enabled us to repurchase 14.4 million shares of our stock for a total investment of $859 million, at an average price of $59.81 per share, since the inception of our $1 billion board authorized share repurchase program."

Share Repurchase Program

On January 11, 2011, the Company's Board of Directors authorized a $500 million share repurchase program, and on August 5, 2011, the Company's Board of Directors approved a resolution to increase the authorization under the share repurchase program by an additional $500 million, raising the cumulative authorization under the share repurchase program to $1 billion. During the third quarter ended September 30, 2011, the Company repurchased 8.2 million shares of its common stock at an average price per share of $61.51, for a total investment of $502 million. During the first nine months of 2011, the Company repurchased 14.1 million shares of its common stock at an average price per share of $59.69, for a total investment of $840 million. Subsequent to the end of the third quarter and through the date of this release, the Company repurchased an additional 0.3 million shares of its common stock at an average price per share of $65.81, for a total investment of $19 million. As of the date of this release, the Company had approximately $141 million remaining under its share repurchase program.

3^rd Quarter and Year-to-Date Comparable Store Sales Results

Comparable store sales are calculated based on the change in sales for stores open at least one year and exclude sales of specialty machinery, sales to independent parts stores and sales to team members. Comparable store sales increased 4.8% for the third quarter ended September 30, 2011, versus 11.1% for the same period one year ago. Comparable store sales increased 4.9% for the first nine months of 2011, versus 8.6% for the same period one year ago.

4^th Quarter and Updated Full-Year 2011 Guidance

The table below outlines the Company's guidance for selected fourth quarter and updated full-year 2011 financial data:

Non-GAAP Information

This release contains certain financial information not derived in accordance with United States generally accepted accounting principles ("GAAP"). These items include adjusted operating income, adjusted net income, adjusted diluted earnings per common share, free cash flow, and rent-adjusted debt to adjusted earnings before interest, taxes, depreciation, amortization, stock option compensation and rent ("EBITDAR"). The Company does not, nor does it suggest investors should, consider such non-GAAP financial measures in isolation from, or as a substitute for, GAAP financial information. The Company believes that the presentation of financial results and estimates excluding the impact of the non-cash charge to write off the balance of debt issuance costs, the charge related to the termination of interest rate swap agreements, the charges related to the legacy CSK DOJ investigation, a non-recurring, non-operating gain related to the settlement of a note receivable acquired in the acquisition of CSK, as well as the presentation of adjusted debt to adjusted EBITDAR and free cash flow, provide meaningful supplemental information to both management and investors that is indicative of the Company's core operations. The Company excludes these items in judging its performance and believes this non-GAAP information is useful to investors as well. The Company has included a reconciliation of this additional information to the most comparable GAAP measure in the accompanying reconciliation table.

Earnings Conference Call Information

The Company will host a conference call on Thursday, October 27, 2011, at 10:00 a.m. central time to discuss its results as well as future expectations. Investors may listen to the conference call live on the Company's website at www.oreillyauto.com by clicking on "Investor Relations" and then "News Room". Interested analysts are invited to join our call. The dial-in number for the call is (706) 679-5789; the conference call identification number is 10172367. A replay of the call will be available on the Company's website following the conference call.

About O'Reilly Automotive, Inc.

O'Reilly Automotive, Inc. is one of the largest specialty retailers of automotive aftermarket parts, tools, supplies, equipment and accessories in the United States, serving both the do-it-yourself and professional service provider markets. Founded in 1957 by the O'Reilly family, the Company operated 3,707 stores in 39 states as of September 30, 2011.

The O'Reilly Automotive, Inc. logo is available at http://www.globenewswire.com/newsroom/prs/?pkgid=5430

Forward-Looking Statements

The Company claims the protection of the safe-harbor for forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. You can identify these statements by forward-looking words such as "expect," "believe," "anticipate," "should," "plan," "intend," "estimate," "project," "will" or similar words. In addition, statements contained within this press release that are not historical facts are forward-looking statements, such as statements discussing among other things, expected growth, store development, integration and expansion strategy, business strategies, future revenues and future performance. These forward-looking statements are based on estimates, projections, beliefs and assumptions and are not guarantees of future events and results. Such statements are subject to risks, uncertainties and assumptions, including, but not limited to, competition, product demand, the market for auto parts, the economy in general, inflation, consumer debt levels, governmental approvals, the Company's increased debt levels, credit ratings on the Company's public debt, the Company's ability to hire and retain qualified employees, risks associated with the performance of acquired businesses such as CSK, weather, terrorist activities, war and the threat of war. Actual results may materially differ from anticipated results described or implied in these forward-looking statements. Please refer to the "Risk Factors" section of the annual report on Form 10-K for the year ended December 31, 2010, for additional factors that could materially affect the Company's financial performance.

CONTACT: Investor & Media Contact
         Mark Merz (417) 829-5878