AZ Tech Smog Check is a STAR-certified smog station on N Carpenter Rd in Modesto. We do one thing, and we do it well: get you through your California smog check without the wait, the upsell, or the guesswork. Drivers from across the Modesto area come to us because the price is low, the test is honest, and the whole visit usually takes about fifteen minutes.
We test every kind of vehicle for every DMV reason — biennial registration renewal, initial registration, out-of-state transfers, change-of-ownership, gross-polluter certification, and diesel inspections. Whatever your renewal notice is asking for, we can inspect and certify it to Bureau of Automotive Repair standards.
Because we’re a test-only station, we inspect and certify but never perform repairs. There’s nothing to upsell and no reason to fail you unfairly, so the result is always unbiased — and the price stays low at $49.75 for most 2000-and-newer cars, plus the $8.25 state certificate on a pass. If a vehicle doesn’t make it, we explain in plain language exactly what needs attention and point you toward the state’s Consumer Assistance Program, which may cover up to $500 in emissions repairs for those who qualify.
No appointment is ever necessary — just walk in Monday through Friday. Le atendemos en español con gusto. We’re proud to serve Modesto, Ceres, Salida, Riverbank, Empire and Keyes.