How long does it take to smog a vehicle?
Smog testing usually takes under 45 minutes for newer vehicles and up to 1.5 hours for older models.
Quick Summary
Most smog tests take 45–90 minutes.
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Answered by Sonny Baird
Last updated 1/16/2026, 3:10:19 PM
96 and newer vehicles 45 minutes or less. 95 and older could take 1 to 1.5 hrs depending on pretest.
Sonny Baird
General Sales Manager, West Says Yes
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