Smog Guys Plus

Yes. Smog Guys Plus 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. Smog Guys Plus 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.

Smog Guys Plus is open Monday 8 AM to 6 PM; Tuesday 8 AM to 6 PM; Wednesday 8 AM to 6 PM; Thursday 8 AM to 6 PM; Friday 8 AM to 6 PM; Saturday 8 AM to 4 PM. Closed Sunday. Hours can change on holidays, so call ahead if you are cutting it close.

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

Smog Guys Plus accepts Credit Card, Debit Card, NFC/Contactless.

Google lists the following accessibility features at Smog Guys Plus: wheelchair accessible entrance, wheelchair accessible parking.

Smog Guys Plus has held a BAR smog license since 2017. You can verify the license status at bar.ca.gov.

Smog Guys Plus 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) 436-3928 for a quote.

Smog Guys Plus does not take online bookings here, but walk-ins are welcome. Call (925) 436-3928 to check the wait.

Staff at Smog Guys Plus 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.

Smog Guys Plus 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 Antioch are Navid Vip Smog (0.1 mi) and Gumaros Auto Repair Inc (0.2 mi). Both are listed further up this page with their ratings and hours.