Mario Service Center

Yes. Mario Service Center Inc 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. Mario Service Center Inc 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.

Mario Service Center Inc 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. Mario Service Center Inc accepts walk-ins, so you can drive in without booking ahead.

Mario Service Center Inc accepts Cash, Credit Card.

Mario Service Center Inc has held a BAR smog license since 2011. You can verify the license status at bar.ca.gov.

Mario Service Center Inc 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) 869-5102 for a quote.

Mario Service Center Inc does not take online bookings here, but walk-ins are welcome. Call (209) 869-5102 to check the wait.

Staff at Mario Service Center Inc 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 Mario Service Center Inc 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 Riverbank are 5 Points Smog And Tune Station (7th Letter) and Freedom Smog (0.1 mi). Both are listed further up this page with their ratings and hours.