Superior Smog Check

Yes. Superior Smog Check 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.

Yes. Superior Smog Check is licensed as a Test Only smog station. This station performs the smog test and issues the certificate. It does not do repairs, so a failed vehicle has to be fixed elsewhere and brought back.

Superior Smog Check is open Monday 8:30 AM to 5:30 PM; Tuesday 8:30 AM to 5:30 PM; Wednesday 8:30 AM to 5:30 PM; Thursday 8:30 AM to 5:30 PM; Friday 8:30 AM to 5:30 PM; Saturday 9 AM to 4 PM. Closed Sunday. Hours can change on holidays, so call ahead if you are cutting it close.

Yes. Superior Smog Check accepts walk-ins, so you can drive in without booking ahead.

Superior Smog Check accepts Cash, Credit Card.

Superior Smog Check has held a BAR smog license since 2022. You can verify the license status at bar.ca.gov.

Superior Smog Check 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. Call (707) 724-8640 for a quote.

Superior Smog Check does not take online bookings here, but walk-ins are welcome. Call (707) 724-8640 to check the wait.

Staff at Superior Smog Check 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.

Superior Smog Check is a Test Only station, so it cannot do the repair. You would have the work done at a repair shop, then come back for the free retest within 30 days. California's Consumer Assistance Program covers up to $1,200 of emissions repairs for qualifying owners.

The closest alternatives in Vacaville are Mazzei Chevrolet (0.1 mi) and Nissan Of Vacaville (0.3 mi). Both are listed further up this page with their ratings and hours.