Williams Transmissions And Express Smog

Yes. Williams Transmissions And Express Smog 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. Williams Transmissions And Express Smog 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.

Williams Transmissions And Express Smog is open Monday 8 AM to 5 PM; Tuesday 8 AM to 5 PM; Wednesday 8 AM to 5 PM; Thursday 8 AM to 5 PM; Friday 8 AM to 5 PM. Closed Saturday and Sunday. Hours can change on holidays, so call ahead if you are cutting it close.

Yes. Williams Transmissions And Express Smog accepts walk-ins, so you can drive in without booking ahead.

Williams Transmissions And Express Smog accepts Cash, Credit Card.

Williams Transmissions And Express Smog has held a BAR smog license since 2012. You can verify the license status at bar.ca.gov.

Williams Transmissions And Express Smog 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 (707) 224-7467 for a quote.

Williams Transmissions And Express Smog does not take online bookings here, but walk-ins are welcome. Call (707) 224-7467 to check the wait.

Staff at Williams Transmissions And Express Smog 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 Williams Transmissions And Express Smog 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 Napa are Smog Pros (0.1 mi) and Budget Tune & Lube (0.3 mi). Both are listed further up this page with their ratings and hours.