Bay Star Auto Care

Yes. Bay Star Auto Care 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. Bay Star Auto Care 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.

Bay Star Auto Care 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 5 PM. Closed Sunday. Hours can change on holidays, so call ahead if you are cutting it close.

Yes. Bay Star Auto Care accepts walk-ins, so you can drive in without booking ahead.

Bay Star Auto Care accepts Cash, Credit Card.

Bay Star Auto Care has held a BAR smog license since 1997. You can verify the license status at bar.ca.gov.

Bay Star Auto Care 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 (510) 489-3331 for a quote.

Bay Star Auto Care does not take online bookings here, but walk-ins are welcome. Call (510) 489-3331 to check the wait.

Staff at Bay Star Auto Care 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 Bay Star Auto Care 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 Union City are Union City Smog Check (0.7 mi) and Gill Smog Check Star Station (0.7 mi). Both are listed further up this page with their ratings and hours.