California Smog Check Guides
Straight answers to the most common California smog questions — and the fastest way to get yours done. Walk in at any of our 13 locations, or text to lock your soonest time.
Before you come in
Do I need a smog check?
Check if your vehicle is exempt or due — in 10 seconds.
Read guide →How much does a smog check cost?
California pricing, the $8.25 certificate fee, and what affects it.
Read guide →Walk-in & fastest smog near me
13 walk-in STAR locations, most done in about 15 minutes.
Read guide →When is my smog due?
Renewal, sale, and new-resident timing — plus the 90-day window.
Read guide →If something's wrong
Failed your smog check?
Common causes, the free retest, and up to $1,450 in CAP repair help.
Read guide →STAR smog check explained
Why a DMV notice asks for STAR, and gross-polluter retests.
Read guide →