2005 O'Reilly Automotive, Inc. 4Q and Year End Earnings Release

Feb 28, 2006

Springfield, MO, February 28, 2006 — O’Reilly Automotive, Inc. (“O’Reilly” or “the Company”) (Nasdaq: ORLY)
today announced record revenues and earnings for the fourth quarter and year ended December 31, 2005, representing 13
consecutive years of record revenues and earnings and positive comparable store product sales increases for O’Reilly
since becoming a public company in April 1993.