Prime Automotive

No. Prime Automotive is not STAR certified. If your DMV renewal notice says "STAR Station Required," you will need to visit a STAR certified station instead.

No. Prime Automotive 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.

Prime Automotive 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 9 AM to 5 PM. Closed Sunday. Hours can change on holidays, so call ahead if you are cutting it close.

Yes. Prime Automotive accepts walk-ins, so you can drive in without booking ahead.

Prime Automotive accepts Credit Card, Debit Card, NFC/Contactless.

Google lists the following accessibility features at Prime Automotive: wheelchair accessible entrance, wheelchair accessible parking.

Prime Automotive has held a BAR smog license since 2022. You can verify the license status at bar.ca.gov.

Prime Automotive 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) 274-5955 for a quote.

Prime Automotive does not take online bookings here, but walk-ins are welcome. Call (510) 274-5955 to check the wait.

Staff at Prime Automotive 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 Prime Automotive 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 Castro Valley are Smog World & Lube (0.9 mi) and Quality Auto Care (0.9 mi). Both are listed further up this page with their ratings and hours.