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Mon-Fri: 8AM – 4:30PM
Saturday: 8AM – 2PM

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STAR Smog Testing Station in Covina

Sornoso Automotive Repair is an established, reputable STAR smog testing and repair station in Covina. We offer official smog testing and repairs necessary for domestic and foreign SUVS, cars, and trucks. The DMV will notify you each year that a smog check is required. During a smog check at our station you can inspect:

Visual inspection of the emission control components
Functional inspection of the ignition timing, check engine light, gas cap, exhaust recirculation system, and fuel evaporation system
Inspection of the on-board diagnostic system
Tailpipe emissions inspection

Smog checks are mandatory in California for most vehicles, every other year. Smog checks are required for all cars, trucks, and SUVS that are more than eight years old. Cars that have been sold, and are older than four years old, will need smog checks. If you’re registering a car from out-of-state you will also have to have a smog check.

Electric vehicles are exempt from smog checks. However, hybrid vehicles still need smog checks.

we do all kind of  auto repairs in covina

What Happens if My Car Fails a Smog Check?

If your car fails the STAR certified smog check, you will not be able to register your car. Therefore, continuing to drive the car unregistered is against the law. However, repairs can be made at our STAR certified smog testing and repair station.

Common reasons that a vehicle fails a smog check include:
Bad spark plugs
Broken oxygen sensor
Catalytic converter malfunction
Dirty air filters
Evaporative Emission Control (EVAP) malfunction
Leaking fuel injectors
Leaking gas cap
Malfunctioning fuel metering
As a full-service auto repair shop, we’re not just a smog testing station. We are also equipped to repair your vehicle at our shop. Our experienced, professional, honest technicians will provide you with an accurate estimate for repairs. We also offer fast repair service, to get your car back to you as quickly as possible.

You do not need to schedule an appointment for a smog check at our STAR smog station in Covina. Simply bring your car, truck, or SUV in, and we’ll complete your smog check quickly.

How to Make Sure Your Car or Truck Will Pass a Smog Check in Covina

Regular maintenance, including routine oil changes, tune-ups, brake service, and other manufacturer’s service recommendations are the best way to keep your car in excellent condition. You should bring your car to a full-service auto repair shop in Covina anytime the check engine light comes on.

If you know that you’ll need a smog check soon, it’s smart to have an oil change before testing. Likewise, you’ll need to get the check engine light off before you can pass the check. An illuminated check engine light will trigger an automatic failure.

Other best practices include driving your car for at least 15 minutes before your smog check so that the engine temperature is adequate for the test. You should also ensure that you have the correct tire pressure in your cars, as low air in tires can trigger a smog failure.

Get a STAR Smog Test in Covina Today

If you’re due for a smog check, come to Sornoso Auto today. We are an official STAR certified smog testing station in Covina. As a full-service auto repair shop, we can also make the necessary repairs to your foreign or domestic vehicle so you can pass your smog test and renew your registration.

Sornoso Automotive is located at 925 N. Citrus Avenue in Covina. We are open Monday – Friday from 8:00 am – 4:30 pm, and on Saturday from 8:00 am – 2:00 pm. Contact us today at 626-966-0404.

We are proud to announce that all our service technicians are ASE Certified.


Sornoso Automotive
925 N Citrus Ave
Covina, CA 91722-2736

Working Hours

Mon-Fri: 8am-4:30pm
Saturday: 8am-2pm
Sunday: Closed