Smog check FAQ
Smog check questions, answered
Answers to the questions drivers ask most about California smog checks. Don't see yours? Call (559) 777-7786.
How much does a smog check cost at Valley Auto Smog?
Call (559) 777-7786 for today's price. We tell you the full out-the-door cost, including the state's $8.25 certificate fee, before we start. Mention the website and we take 10% off.
How long does a smog check take?
Most take 15 to 30 minutes. Older vehicles that need a tailpipe or fuel-evaporative test can take a little longer.
Do I need an appointment for a smog check?
No. Walk in Monday through Friday 9:30 am to 5 pm or Saturday 10 am to 5 pm. Near closing time or at the end of the month, call (559) 777-7786 first.
What do I need to bring?
The vehicle, its key, and your DMV renewal notice if you have one. We accept Cash, Visa, Mastercard, Discover, American Express, Debit.
Do you send my smog results to the DMV?
Yes. Passing results are sent to the California DMV electronically, usually before you leave. You also get a printed Vehicle Inspection Report.
How long is a smog certificate valid in California?
90 days from the date of the test, for both registration renewal and change of ownership.
Does my car need a smog check?
Most gas and hybrid vehicles need one every two years after their first eight model years, and at change of ownership if they are more than four model years old. Diesels 1998 and newer up to 14,000 lbs GVWR also need one. Electric vehicles, motorcycles and gas vehicles 1975 and older are exempt. See our California smog check guide.
My DMV notice says I need a STAR station. Can you help?
Look for the words “STAR station” on your DMV renewal notice. Not every station can certify those vehicles, so call us at (559) 777-7786 before you drive over and we'll tell you whether we can take yours.
Do you smog diesel trucks?
Yes, diesel vehicles model year 1998 and newer with a GVWR of 14,000 lbs or less. Heavier diesel trucks go through CARB's Clean Truck Check program instead.
Do hybrids need a smog check?
Yes. Hybrids, including plug-in hybrids, follow the same schedule as gas vehicles.
Do electric cars need a smog check?
No. Fully electric vehicles are exempt from California smog checks.
Is a check engine light an automatic fail?
Yes, on 1996 and newer vehicles. Get the fault diagnosed and repaired before your test, and don't clear the code right before you come in.
What happens if my car fails?
You get a Vehicle Inspection Report listing the reason. Get the repair done, drive normally for a few days, then come back for a retest. Income-eligible drivers may qualify for state repair assistance. Details on our failed smog check page.
Can you smog a car from out of state?
Yes. A California smog check is required to register a vehicle from another state. You will also need a VIN verification, which is done at the DMV or by a licensed verifier.
Who pays for the smog check when a car is sold?
The seller. California requires the seller to provide a valid smog certificate, dated within 90 days, for most vehicles more than four model years old.
Do you offer any discounts?
Yes. Mention the website at the counter and we take 10% off your smog check.
Where is Valley Auto Smog located?
3401 W Holland Ave, Fresno, CA 93722, on Holland Avenue near N Valentine Ave, between Ashlan and Shields in west Fresno.
Due for a smog check?
Walk in Monday through Saturday or call ahead. Mention the website and save 10%.