Gumaros Auto Repair

Yes. Gumaros Auto Repair Inc 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.

No. Gumaros Auto Repair Inc is licensed as a Test & Repair station. This station can run your smog test and, if the vehicle fails, diagnose and repair it in the same shop.

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

Yes. Gumaros Auto Repair Inc accepts walk-ins, so you can drive in without booking ahead.

Gumaros Auto Repair Inc accepts Credit Card, Debit Card, NFC/Contactless.

Google lists the following accessibility features at Gumaros Auto Repair Inc: wheelchair accessible entrance, wheelchair accessible parking.

Gumaros Auto Repair Inc has held a BAR smog license since 2017. You can verify the license status at bar.ca.gov.

Gumaros Auto Repair Inc 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) 779-0398 for a quote.

Gumaros Auto Repair Inc does not take online bookings here, but walk-ins are welcome. Call (925) 779-0398 to check the wait.

Staff at Gumaros Auto Repair Inc 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.

Because Gumaros Auto Repair Inc is a Test & Repair station, it can diagnose and repair the problem in the same shop, then run the free retest within 30 days. If the repair bill is steep, California's Consumer Assistance Program covers up to $1,200 of emissions repairs for qualifying owners.

The closest alternatives in Antioch are Antioch Toyota Scion (0.1 mi) and Antioch Chrysler Jeep Dodge (0.1 mi). Both are listed further up this page with their ratings and hours.