Just Smog It

Yes. Just Smog It 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. Just Smog It 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.

Just Smog It is open Monday 9 AM to 5 PM; Tuesday 9 AM to 5 PM; Wednesday 9 AM to 5 PM; Thursday 9 AM to 5 PM; Friday 9 AM to 5 PM. Closed Saturday and Sunday. Hours can change on holidays, so call ahead if you are cutting it close.

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

Just Smog It accepts Cash, Credit Card.

Just Smog It has held a BAR smog license since 2019. You can verify the license status at bar.ca.gov.

Just Smog It 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) 228-2929 for a quote.

Just Smog It does not take online bookings here, but walk-ins are welcome. Call (925) 228-2929 to check the wait.

Staff at Just Smog It 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.

Just Smog It 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 Ace Auto Smog (0.3 mi) and Contra Costa Electric Inc (0.7 mi). Both are listed further up this page with their ratings and hours.