Vehicle Inspections

Emission Inspections

2024
Salt Lake County
Emissions Requirements

Vehicles registered in Salt Lake County with model years less than six years old are required to have an emission test once every two years. Vehicles in this category that have even-numbered model years must have an emission test in even-numbered years, and vehicles that have odd-numbered model years must have an emission test in odd-numbered years.

Vehicle Model Year Emission Inspection
2024 Not required
2023 Not required
2022 Required
2021 Not required
2020 Required
2019 Not required
2018 to 1968 Required
1967 and older Not required

Exemptions

  • New vehicles with an MSO
  • Any vehicle w/ model year 1967 & older
  • Any diesel vehicle w/ model year 2013 and older with a GVWR 14,001 and greater
  • Any diesel vehicle w/ model year 1997 & older with a GVWR less than 14,000 lbs
  • All implements of husbandry
  • Off highway vehicles
  • Electric vehicles
  • Motorcycles or motor driven cycles
  • Farm vehicles
  • Vintage Vehicles model year 1982 & older or custom vehicles
  • Maintenance or construction vehicles not designed or licensed to operate on a highway

Note: A vintage vehicle that has a model year of 1983 or newer is required to provide proof of an emissions inspection or provide proof of vehicle insurance that is a type specific to a collector vehicle. See form TC-745, Vintage Vehicle Insurance Affidavit for more information.

Salt Lake County Residents Temporarily Out-of-State

If you are a Salt Lake County resident temporarily residing outside of Utah and your vehicle is required to receive an emission inspection, you may be eligible for a deferment from Salt Lake County. The emission inspection or county deferral must be transmitted from Salt Lake County to the DMV prior to a registration being completed.

Please visit the Salt Lake County website to review requirements and obtain forms for submission of inspection and application for deferral at this link.

2024
Davis County
Emissions Requirements

Vehicles registered in Davis County with model years less than six years old are required to have an emission test once every two years. Vehicles in this category that have even-numbered model years must have an emission test in even-numbered years, and vehicles that have odd-numbered model years must have an emission test in odd-numbered years. 

Vehicle Model Year Emission Inspection
2024 Not required
2023 Not required
2022 Required
2021 Not required
2020 Required
2019 Not required
2018 to 1968 Required
1967 and older Not required

Exemptions

  • New Vehicles with an MSO
  • Any vehicle model year 1967 and older
  • Any vehicle used for maintenance or construction and not designed or licensed to operate on the highway
  • Any motorcycle or motor driven cycle
  • Off highway vehicles
  • Electric Vehicles
  • Vintage vehicles
  • Implements of Husbandry Vehicles
  • Any diesel vehicle 1997 and older
  • Any diesel vehicle with a GVWR greater than 14,001 lbs

Note: A vintage vehicle that has a model year of 1983 or newer is required to provide proof of an emissions inspection or provide proof of vehicle insurance that is a type specific to a collector vehicle. See form TC-745, Vintage Vehicle Insurance Affidavit for more information.

Davis County Residents Temporarily Out-of-State

If you are a Davis County resident temporarily residing outside of Utah and your vehicle is required to receive an emission inspection, you may be eligible for a deferment from Davis County. The emission inspection or county deferral must be transmitted from Davis County to the DMV prior to a registration being completed.

Please visit the Davis County website to review requirements and obtain forms for submission of inspection and application for deferral at this link.

2024
Utah County
Emissions Requirements

Vehicles registered in Utah County with model years less than six years old are required to have an emission test once every two years. Vehicles in this category that have even-numbered model years must have an emission test in even-numbered years, and vehicles that have odd-numbered model years must have an emission test in odd-numbered years. Diesel powered vehicles with model years 1998 - 2019 require an emissions inspection in Utah County.

Vehicle Model Year Emission Inspection
2024 Not required
2023 Not required
2022 Required
2021 Not required
2020 Required
2019 Not required
2018 to 1968 Required
1967 and older Not required
Diesel Emission Tests
1998 to 2019 Required

Exemptions

  • New vehicles with an MSO
  • Any vehicle with a model year 1967 & older
  • Implement of husbandry (Farm) vehicles
  • Any vehicle used for maintenance or construction and not designed or licensed to operate on the highway
  • Any motorcycle or motor driven cycle
  • Electric vehicles
  • Diesel powered vehicles with a model year 1997 & older
  • Off highway vehicles
  • Any diesel vehicle with a GVWR greater than 14,000 lbs.
  • Diesel vehicles 2020 and newer
  • Vintage vehicles model year 1982 & older or custom vehicles

Note: A vintage vehicle that has a model year of 1983 or newer is required to provide proof of an emissions inspection or provide proof of vehicle insurance that is a type specific to a collector vehicle. See form TC-745, Vintage Vehicle Insurance Affidavit for more information.

Utah County Residents Temporarily Out-of-State

If you are a Utah County resident temporarily residing outside of Utah and your vehicle is required to receive an emission inspection, you may be eligible for a deferment from Utah County. The emission inspection or county deferral must be transmitted from Utah County to the DMV prior to a registration being completed.

Please visit the Utah County website to review requirements and obtain forms for submission of inspection and application for deferral at this link or contact cleanair@utahcounty.gov.

2024
Weber County
Emissions Requirements

Vehicles registered in Weber County with model years less than six years old are required to have an emission test once every two years. Vehicles in this category that have even-numbered model years must have an emission test in even-numbered years, and vehicles that have odd-numbered model years must have an emission test in odd-numbered years.

Vehicle Model Year Emission Inspection
2024 Not required
2023 Not required
2022 Required
2021 Not required
2020 Required
2019 Not required
2018 to 1968 Required
1967 and older Not required

Exemptions

  • New vehicles with an MSO
  • Any vehicle with a model year 1967 & Older
  • Implement of husbandry (Farm) vehicles
  • Any vehicle used for maintenance or construction and not designed or licensed to operate on the highway
  • Any motorcycle or motor driven cycle
  • Electric vehicles
  • Any diesel vehicle 1997 & older or with a GVW greater than 14,000 lbs.
  • Off highway vehicles
  • Vintage vehicles model year 1982 & older or custom vehicles

Note: A vintage vehicle that has a model year of 1983 or newer is required to provide proof of an emissions inspection or provide proof of vehicle insurance that is a type specific to a collector vehicle. See form TC-745, Vintage Vehicle Insurance Affidavit for more information.

Weber County Residents Temporarily Out-of-State

If you are a Weber County resident temporarily residing outside of Utah and your vehicle is required to receive an emission inspection, you may be eligible for a deferment from Weber County. The emission inspection or county deferral must be transmitted from Weber County to the DMV prior to a registration being completed.

Please visit the Weber County website to review requirements and obtain forms for submission of inspection and application for deferral at this link

2024
Cache County
Emissions Requirements

Vehicles registered in Cache County with model years less than six years old are not required to have an emission test. Vehicles six years old and greater that have even- numbered model years must have an emission test in even-numbered years, and vehicles that have odd-numbered model years must have an emission test in odd-numbered years.

Vehicle Model Year Emission Inspection
2024 to 2019 Not required
2018 to 1996 Biennial
1995 and older Not required

Exemptions

  • New vehicles with an MSO
  • Any vehicle with a model year 1968 & Older
  • Implement of husbandry (Farm) vehicles
  • Any vehicle used for maintenance or construction and not designed or licensed to operate on the highway
  • Any motorcycle or motor driven cycle
  • Electric vehicles
  • Off highway vehicles
  • Any vehicle less than six years old
  • Any diesel vehicle 1997 & older or with a GVWR greater than 14,000 lbs.
  • Any gasoline (and non-diesel based alternative fuel) vehicle with a model year of 2007 and older with a GVWR greater than 8,500 lbs
  • Vintage vehicles model year 1982 & older or custom vehicles

Note: A vintage vehicle that has a model year of 1983 or newer is required to provide proof of an emissions inspection or provide proof of vehicle insurance that is a type specific to a collector vehicle. See form TC-745, Vintage Vehicle Insurance Affidavit for more information.

Cache County Residents Temporarily Out-of-State

If you are a Cache County resident temporarily residing outside of Utah and your vehicle is required to receive an emission inspection, you may be eligible for a deferment from Cache County. The emission inspection or county deferral must be transmitted from Cache County to the DMV prior to a registration being completed.

Please visit the Cache County website to review requirements and obtain forms for submission of inspection and application for deferral at this link

When to Obtain an Emission Inspection

An emission inspection may be made no more than two months prior to the renewal of the registration. The Division of Motor Vehicles must receive the emission certificate information electronically from the Health Department prior to completing vehicle registration. 

Where to Obtain an Emission Inspection

Emission inspections can be completed at any On the Spot Renewal Station, please visit https://secure.utah.gov/rex/help/stationMap.html to find the closest location near you.

Additional Information

For more information about emissions test requirements contact the appropriate County Health Department below:

Cache County 435-792-6579 brhd.org
Davis County 801-525-4975 daviscountyutah.gov/health
Salt Lake County 385-468-3837 slco.org/health
Utah County 801-851-7600 health.utahcounty.gov
Weber County 801-399-7140 webermorganhealth.org

Utah Residents Living Out-of-State

If you are a Utah resident and temporarily residing outside of Utah, your vehicle may be required to receive an emission inspection. This will be a result of the vehicle year, your Utah resident county and your current out-of-state location. If your vehicle is required to receive an emission inspection you may be eligible for a deferment from your Utah resident county. If required, the emission inspection or county deferral must be transmitted from the county to DMV prior to a registration being completed.

County websites with requirements and forms for submission of inspection or application for deferral for your resident county are listed below.

After receiving confirmation of emission approval from your county of residence, complete your renewal online or submit to DMV.

See Renew Your Registration for more information.

Renew your vehicle online here.

Vehicles Sold by Dealers in Non-Emission Counties to Emission-County Residents

Utah law requires all licensed Utah dealers to assure vehicles they sell to residents of Cache, Davis, Salt Lake, Utah, or Weber counties meet emission testing requirements prior to issuing a temporary permit. However, because emission testing facilities are often not available in counties where emission testing is not required, the air quality administrators from the five emission-required counties have granted a limited emission test exemption.

If a vehicle is sold to a resident of Cache, Davis, Salt Lake, Utah, or Weber counties by a licensed Utah dealer whose place of business is located in a non-emission county, the dealer must:

The purchaser must:

  • Obtain an emission test certificate of compliance within 10 days of return to county of residence;
  • Provide a copy of Form TC-820, Exemption Affidavit for Utah Emission Testing to the local motor vehicle office with the application for plate, title and registration, and,
  • Send certificate of compliance and a copy of the TC-820 to the local Department of Health.

Safety Inspections

Effective January 1, 2018, the State of Utah removed the safety inspection requirement for most vehicles as a prerequisite for registration. Vehicles that require a safety inspection are listed below.

  • Salvage vehicles that have been rebuilt and are requesting a rebuilt title.
  • First time street legal ATV registrations. This includes ownership transfers for previously registered street legal ATVs.
  • Commercial vehicles are required to obtain a safety inspection for display and presenting to law enforcement, but it is not a prerequisite for registration.
  • Motor homes with three axles are considered a “Class 6” vehicle and require an annual safety inspection for display and presenting to law enforcement.

Vehicle/Hull Identification Number (VIN/HIN) Inspections

Inspections of identification numbers are required for all vehicles or vessels to be titled in Utah for the first time, unless the vehicle is new (MSO) and was acquired from an in-state dealer or in-state manufacturer. Safety inspection certificates are acceptable means of verification for your cars, trucks, and motorcycles providing that the VIN number is accurate on the safety inspection certificate.

Trailers, boats, off-highway vehicles, and snowmobiles require separate VIN or HIN inspections, which can be completed using a Form TC-661, Certificate of Inspection completed by a DMV employee, designated contractor, designated contractor, Utah peace officer or designated enforcement agency employee, licensed dealer, or a certified safety inspector. Note that this may be completed by a DMV employee at no extra charge.

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