Auto Traden Service

Yes. Auto Traden 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. Auto Traden 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.

Auto Traden Service 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; Saturday 8 AM to 5 PM. Closed Sunday. Hours can change on holidays, so call ahead if you are cutting it close.

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

Auto Traden Service accepts Cash, Credit Card.

Auto Traden Service has held a BAR smog license since 2005. You can verify the license status at bar.ca.gov.

Auto Traden 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 (209) 572-4760 for a quote.

Auto Traden Service does not take online bookings here, but walk-ins are welcome. Call (209) 572-4760 to check the wait.

Staff at Auto Traden 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 Auto Traden 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 Modesto are A-1 Tony Hernandez Smog and Titos Smog And Auto Repair (0.8 mi). Both are listed further up this page with their ratings and hours.