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  • Smog Check and Car Inspection in Utah

    SUMMARY: Utah Safety & Emissions Inspections

    Some vehicles are required to undergo safety and/or emissions testing for registration and registration renewal. Exact times, fees, and other factors vary depending on the vehicle's location and model year. When applicable, new residents are subject to the same testing procedures, as well as an additional VIN test.

    The Utah Division of Motor Vehicles (DMV) and Department of Public Safety (DPS) work together to govern the state's safety and emissions testing programs. Continue reading for information about required testing, fees, how to handle test failures, and more.

    New Utah Residents

    If you've recently moved to Utah, you must register your vehicle within 60 days of arrival.

    If your vehicle qualifies, it must undergo a safety and/or emissions inspection before registration.

    Additionally, all vehicles being titled and registered in Utah for the first time must undergo a vehicle identification number (VIN) inspection unless they were obtained from a Utah dealer or Utah manufacturer.

    Any of the following agents can conduct a VIN inspection and complete the Certificate of Inspection (Form TC-661) for you:

    • Certified safety inspector.
    • DMV employee (out-of-state authorized agents are acceptable).
    • Approved contractor.
    • Utah peace officer (out-of-state peace officers are acceptable).
    • Licensed vehicle dealer.

    Bring the completed Certificate of Inspection and any applicable safety and/or emissions certificates to your local DMV office when you title and register your vehicle.

    Inspection Requirements and Exemptions

    Utah Safety Inspections

    Inspection Requirements

    Unless it's exempt (see “Inspection Exemptions" below), the following vehicles must undergo safety inspection prior to initial registration, and then per the state's updated safety inspection schedule:

    • 4 model years old.
    • 8 model years old.
    • 10 model years old and older (required annually).

    You can have your vehicle inspected up to 2 months before your registration renewal deadline (see Completing a Vehicle Inspection below).

    Inspection Exemptions

    The following vehicles are exempt from safety inspection in Utah:

    • New vehicles with Manufacturer's States of Origin (MSOs).
    • Vehicles under 4 model years old.

    Utah Emissions Inspections

    Inspection Requirements

    Eligible vehicles in the following Utah counties must undergo emissions inspections:

    • Davis.
    • Salt Lake.
    • Utah.
    • Weber.
    • Cache.

    In Davis, Salt Lake, Utah, and Weber, vehicles:

    • Under 6 years old must undergo emissions inspections every 2 years.
      • Vehicles with even-numbered model years are tested during even-numbered years; odd-numbered model years are tested during odd-numbered years.
    • 6 years old and older (up to model year 1967) must undergo annual emissions inspections prior to registration.

    In Cache, vehicles 6 years old and older are tested according to their model year:

    • Those with even-numbered model years are tested during even-numbered years.
    • Those with odd-numbered model years are tested during odd-numbered years.

    Refer to the state's updated emissions inspections schedules to determine whether it's time for your vehicle's test.

    Inspection Exemptions

    The following vehicles are exempt from Utah emissions inspections:

    • New vehicles with Manufacturer's States of Origin (MSOs).
    • Vehicles under 2 years old.
    • Vehicles model year 1967 and older ONLY in Davis, Salt Lake, Utah, and Weber.
    • Vehicles model year 1968 and older ONLY in Cache.
    • Motorcycles.

    Completing a UT Vehicle Inspection

    Safety Inspections

    Most repair and other service stations are equipped to conduct safety inspections.

    Bring your:

    • Current vehicle registration.
    • Maximum applicable fee:
      • Motorcycles: $7
      • Cars: $15
      • Trucks: $15
      • Trailers: $15
      • Buses: $15
      • 4-wheel drive vehicles: $20
      • Split-axle vehicles: $20

    Safety inspections cannot be made more than 2 months prior to registration renewal.

    Once you pass, you'll receive a safety inspection certificate to present when you register or renew your registration.

    Emissions Inspections

    Contact your local county emissions office to locate the nearest emissions testing facility; call ahead for information on any documents you must bring (such as your vehicle registration).

    Bring any required documents and the following fees*:

    • Cache: $20.
    • Weber: $30.
    • Davis, Salt Lake, and Utah: Self-regulated fees; call ahead.

    * Additional emissions-related fees are due at the time of registration, too. See the state's Emission Program Fees guide for exact amounts.

    Emissions inspections cannot be made more than 2 months prior to registration renewal.

    Failed Utah Vehicle Inspections

    Safety Inspections

    If your vehicle fails its Utah safety inspection, you must have it repaired and reinspected. If you have your vehicle repaired within 15 days, the inspection station must retest the vehicle for free.

    If your vehicle continues to fail, contact the DPS at (801) 965-4889 to determine whether it qualifies for an exemption.

    Emissions Inspections

    If the emissions check results in a failing grade, you must have your vehicle repaired and retested.

    If your vehicle continues to fail the emissions inspection, contact your local county emissions office to find out if your vehicle qualifies for an exemption.

    Utah Vehicles Out of State

    If your vehicle is outside of Utah when your registration renewal comes due, you may qualify for a temporary out-of-state exemption, OR for permission to complete an inspection within a qualifying jurisdiction and mail your proof to the Utah DMV.

    To do so:

    If your vehicle is not currently in a jurisdiction that provides/requires vehicle inspections, you'll need to have your car inspected upon your return to Utah.

    Contact the DMV at (801) 297-7780 or (800) 368-8824 for more information on out-of-state inspection exemptions.

    About Utah's Safety & Emissions Programs

    Safety Inspections

    Your safety inspector will explain the safety inspection process to you; however, most vehicle safety inspections consist of checking basic safety components, such as:

    • Brakes, including the parking break.
    • All lights.
    • Tires, wheels, and rims.
    • Horns.
    • Mirrors.

    Emissions Inspections

    Generally, Utah emissions testing consists of On-Board Diagnostic (OBD) testing, which means the inspector will connect testing equipment to your vehicle's computer system to ensure all emissions components are functioning properly.

    However, your emissions inspector will explain any other or additional emissions testing components during the exam.

    Utah Incentives for Eco-Friendly Driving

    Currently, Utah doesn't offer inspection exemptions for traditional eco-friendly passenger vehicles and trucks; however, you can still take advantage of green driving perks such as high occupancy vehicle (HOV) lane access, vehicle grant and loan programs, and even state and federal tax incentives.

    Learn more at our sections on green driver incentives and green driving laws and regulations.

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