Thurston Auto Plaza

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

No. Thurston Auto Plaza 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.

Thurston Auto Plaza 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 6 PM; Sunday 10 AM to 5 PM. Hours can change on holidays, so call ahead if you are cutting it close.

Yes. Thurston Auto Plaza accepts walk-ins, so you can drive in without booking ahead.

Thurston Auto Plaza accepts Cash, Credit Card.

Thurston Auto Plaza has held a BAR smog license since 1990. You can verify the license status at bar.ca.gov.

Thurston Auto Plaza 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) 832-4106 for a quote.

Thurston Auto Plaza does not take online bookings here, but walk-ins are welcome. Call (707) 832-4106 to check the wait.

Staff at Thurston Auto Plaza 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 Thurston Auto Plaza 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 Ukiah are Thurston Honda (0.1 mi) and Elite Auto Repair (0.5 mi). Both are listed further up this page with their ratings and hours.