Demerjian Auto Service

Yes. Demerjian Auto Service 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. Demerjian Auto Service 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.

Demerjian Auto Service is open Monday 7:30 AM to 4 PM; Tuesday 7:30 AM to 4 PM; Wednesday 7:30 AM to 4 PM; Thursday 7:30 AM to 4 PM; Friday 7:30 AM to 4 PM. Closed Saturday and Sunday. Hours can change on holidays, so call ahead if you are cutting it close.

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

Demerjian Auto Service accepts Cash, Credit Card.

Demerjian Auto Service has held a BAR smog license since 1999. You can verify the license status at bar.ca.gov.

Demerjian Auto Service 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 (626) 798-7151 for a quote.

Demerjian Auto Service does not take online bookings here, but walk-ins are welcome. Call (626) 798-7151 to check the wait.

Staff at Demerjian Auto Service 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 Demerjian Auto Service 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 Pasadena are Hyarcs Auto Repair Inc (1.1 mi) and Express Smog Test Only Center (1.1 mi). Both are listed further up this page with their ratings and hours.