Napa Autowerke

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

No. Napa Autowerke 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.

Napa Autowerke 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. Napa Autowerke accepts walk-ins, so you can drive in without booking ahead.

Napa Autowerke accepts Cash, Credit Card.

Napa Autowerke has held a BAR smog license since 1989. You can verify the license status at bar.ca.gov.

Napa Autowerke 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) 255-1922 for a quote.

Napa Autowerke does not take online bookings here, but walk-ins are welcome. Call (707) 255-1922 to check the wait.

Staff at Napa Autowerke 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 Napa Autowerke 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 Mcm Jobes Repair Inc (0.1 mi) and Napa Smog Test Only (0.1 mi). Both are listed further up this page with their ratings and hours.