Ace Auto Smog

Yes. Ace Auto Smog 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. Ace Auto Smog 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.

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

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

Ace Auto Smog accepts Cash, Credit Card.

Ace Auto Smog has held a BAR smog license since 2020. You can verify the license status at bar.ca.gov.

Ace Auto Smog 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 (925) 326-1223 for a quote.

Ace Auto Smog does not take online bookings here, but walk-ins are welcome. Call (925) 326-1223 to check the wait.

Staff at Ace Auto Smog 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.

Ace Auto Smog 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 Martinez are Just Smog It (0.3 mi) and Contra Costa Electric Inc (0.6 mi). Both are listed further up this page with their ratings and hours.