ORLY 2006 2Q Earnings Release July 26, 2006

Jul 26, 2006

Springfield, MO, July 26, 2006 — O’Reilly Automotive, Inc. (“O’Reilly” or “the Company”) (Nasdaq: ORLY) today
announced record revenues and earnings for the second quarter of 2006, representing 51 quarters of record revenues and
earnings for O’Reilly since becoming a public company in April 1993.Springfield, MO, July 26, 2006 — O’Reilly Automotive, Inc. (“O’Reilly” or “the Company”) (Nasdaq: ORLY) today
announced record revenues and earnings for the second quarter of 2006, representing 51 quarters of record revenues and
earnings for O’Reilly since becoming a public company in April 1993.