Mhz Auto

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

Yes. Mhz Auto Inc. is licensed as a Test Only smog station. This station performs the smog test and issues the certificate. It does not do repairs, so a failed vehicle has to be fixed elsewhere and brought back.

Mhz Auto Inc. is open Monday 9:30 AM to 6 PM; Tuesday 9:30 AM to 6 PM; Wednesday 9:30 AM to 6 PM; Thursday 9:30 AM to 6 PM; Friday 9:30 AM to 6 PM; Saturday 9:30 AM to 6 PM. Closed Sunday. Hours can change on holidays, so call ahead if you are cutting it close.

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

Mhz Auto Inc. accepts Cash, Credit Card.

Mhz Auto Inc. has held a BAR smog license since 2021. You can verify the license status at bar.ca.gov.

Mhz Auto 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 (510) 868-8708 for a quote.

Mhz Auto Inc. does not take online bookings here, but walk-ins are welcome. Call (510) 868-8708 to check the wait.

Staff at Mhz Auto 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.

Mhz Auto Inc. is a Test Only station, so it cannot do the repair. You would have the work done at a repair shop, then come back for the free retest within 30 days. California's Consumer Assistance Program covers up to $1,200 of emissions repairs for qualifying owners.

The closest alternatives in Tracy are Novus Motors (0.2 mi) and Joe's Smog Shack Inc (0.9 mi). Both are listed further up this page with their ratings and hours.