Tri Valley Auto Service

Yes. Tri Valley Auto Service is STAR certified with the California Bureau of Automotive Repair, so it can test vehicles the DMV directs to a STAR station, including gross polluters.

No. Tri Valley Auto Service is licensed as a Test & Repair station. This station can run your smog test and, if the vehicle fails, diagnose and repair it in the same shop.

Yes. Tri Valley Auto Service accepts walk-ins, so you can drive in without booking ahead.

Tri Valley Auto Service accepts Cash, Credit Card.

Tri Valley Auto Service has held a BAR smog license since 2018. You can verify the license status at bar.ca.gov.

Tri Valley Auto Service has not published a price on SmogCheckDeals. The Bureau of Automotive Repair puts the statewide average at $69.16 as of August 2026, about $65 for a 2000-or-newer vehicle and $73 for 1999-or-older, plus the $8.25 certificate fee.

Tri Valley Auto Service does not take online bookings here, but walk-ins are welcome.

We don't have hours on file for Tri Valley Auto Service, so confirm they are open before you drive over.

Staff at Tri Valley Auto Service speak English.

Bring the car, your registration or DMV renewal notice, and a way to pay. Most smog checks take 15 to 30 minutes, and most visits are closer to 20.

Because Tri Valley Auto Service is a Test & Repair station, it can diagnose and repair the problem in the same shop, then run the free retest within 30 days. If the repair bill is steep, California's Consumer Assistance Program covers up to $1,200 of emissions repairs for qualifying owners.

The closest alternatives in Livermore are First Street Smog (0.8 mi) and Cal State Smogs (0.9 mi). Both are listed further up this page with their ratings and hours.