A-1 Stop Smog Brentwood

Yes. A-1 Stop Smog Brentwood 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. A-1 Stop Smog Brentwood 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.

A-1 Stop Smog Brentwood 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; Saturday 9 AM to 5 PM. Closed Sunday. Hours can change on holidays, so call ahead if you are cutting it close.

Yes. A-1 Stop Smog Brentwood accepts walk-ins, so you can drive in without booking ahead.

A-1 Stop Smog Brentwood accepts Credit Card, Debit Card, NFC/Contactless.

Google lists the following accessibility features at A-1 Stop Smog Brentwood: wheelchair accessible entrance, wheelchair accessible parking.

A-1 Stop Smog Brentwood has held a BAR smog license since 2006. You can verify the license status at bar.ca.gov.

A-1 Stop Smog Brentwood 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) 506-9670 for a quote.

A-1 Stop Smog Brentwood does not take online bookings here, but walk-ins are welcome. Call (925) 506-9670 to check the wait.

Staff at A-1 Stop Smog Brentwood 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.

A-1 Stop Smog Brentwood 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 Brentwood are Brentwood Muffler & Auto Repair (0.1 mi) and Horizon Smog (0.2 mi). Both are listed further up this page with their ratings and hours.