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CarMax O'Fallon

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At CarMax O'Fallon one of our Auto Superstores, you can shop for a used car, take a test drive, get an appraisal, and learn more about your financing options. Start shopping for a used car today.

Store Hours

Showroom Hours

Monday - Friday 11AM - 8PM
Saturday 9AM - 7PM

Service Hours

Monday - Friday 8AM - 5PM

Contact Us

Best times to call

Monday - Saturday 8AM - 8PM

Sales and General

Toll Free (844) 345-1179
Fax (618) 206-7299

Make An Appointment At
CarMax O'Fallon

Test drive a used car, get an appraisal, or get help with your search by visiting the team at CarMax O'Fallon.
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Looking for more to do? You can shop cars in St. Louis, or learn more about selling your car to CarMax.