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CarMax Auto Superstore

Austin South

4400 S. IH 35
Austin, Texas 78745
I-35, south of 290, on the Motor Mile

Local (512) 651-7160
Toll Free (866) 409-6699
Fax (512) 651-7166

  • Showroom Hours

    Mon-Fri 10-9
    Sat 9-9

  • Service Dept. Hours

    Mon-Fri 7:30-6

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Better MPG: Find it here

Our website now lets you specify miles per gallon, so as you search for cars at this store, you can find better MPG.