Springfield, MO, September 1, 2005 — O’Reilly Automotive, Inc. (“O’Reilly” or “the Company”) (Nasdaq: ORLY) today announced that the majority of stores in the areas affected by Hurricane Katrina have reopened. As of 1:00 p.m. CST today, only 19 stores remain closed, 10 of which are ready to reopen once clearance has been given by the authorities. One store has sustained serious damage, and the status of the remaining eight stores is uncertain at this time due to very limited access to some of the affected areas.