frequently asked questions


  • Do you perform smog repairs or adjustments?

    No. We are a test-only smog inspection station, which means we do not perform repairs or adjustments of any kind. This ensures every inspection is unbiased and based solely on your vehicle’s emissions results.

  • How long does a smog inspection take?

    Most smog inspections are completed in 15–20 minutes. Our efficient process and experienced technicians help minimize wait times while ensuring accurate testing.

  • Do I need an appointment for a smog check?

    Appointments are not required. We welcome walk-ins and also offer same-day appointments for added convenience at both our Temecula and Menifee locations.

  • What do I need to bring for my smog inspection?

    You’ll need your vehicle and valid registration or DMV notice if applicable. If you qualify for a discount, please bring valid ID at the time of service.

  • Are you a STAR-certified smog station?

    Yes. We are authorized to perform STAR smog inspections for vehicles required by the DMV to receive enhanced emissions testing.

  • Do you test commercial and fleet vehicles?

    Yes. We provide emissions testing for commercial vehicles and fleets, helping businesses remain compliant with California regulations.

  • Can Tri-City Smog test diesel vehicles?

    Yes. Drivers in Menifee, California, and surrounding areas can rely on accurate diagnostics and state-compliant results for registration, fleet compliance, or ownership transfers.

  • Will my results be sent to the DMV?

    Yes. We electronically transmit smog certification results directly to the California DMV for fast and accurate processing.