Springfield, MO, July 22, 2008 — O’Reilly Automotive, Inc. (“O’Reilly” or “the Company”) (Nasdaq: ORLY) today announced revenues and earnings for the second quarter ended June 30, 2008. Net income for the second quarter ended June 30, 2008, totaled $55.8 million, up 7.5% from $51.9 million for the same period in 2007. Diluted earnings per common share for the second quarter of 2008 increased 6.7% to $0.48 on 116.5 million shares compared to $0.45 for the second quarter of 2007 on 116.1 million shares. Sales for the three months ended June 30, 2008, totaled $704 million, up 9.5% from $643 million for the same period a year ago. Gross profit for the second quarter of 2008 increased to $317 million (or 45.0% of sales) from $287 million (or 44.7% of sales) for the second quarter of 2007, representing an increase of 10.4%. Selling, General and Administrative expenses increased to $229 million (or 32.5% of sales) for the second quarter of 2008 from $206 million (or 32.0% of sales) for the second quarter of 2007, representing an increase of 11.2%.