Safety Inspection
Beginning January 1, 2018, ALL commercial vehicles regardless of weight require an annual safety inspection. The safety inspection is not a prerequisite for registration. However, the certificates must be kept in the vehicle at all times.
Emissions Inspection
2023
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 |
|---|---|
| 2023 | Not required |
| 2022 | Not required |
| 2021 | Required |
| 2020 | Not required |
| 2019 | Required |
| 2018 | Not required |
| 2017 to 1968 | Required |
| 1967 and older | Not required |
Exemptions
- New vehicles with an MSO
- Any vehicle with a model year 1967 & older
- Any diesel vehicle with a model year 1997 & older and with a GVWR less than 14,000 lbs.
- All implements of husbandry
- Off highway vehicles
- Electric vehicles
- Motorcycles or motor driven cycles
- Farm vehicles
- Maintenance or construction vehicles not designed or licensed to operate on a highway
- Vintage vehicles model year 1980 & older or custom vehicles
Note: A vintage vehicle that has a model year of 1981 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 slco.org/health/air-quality/vehicle-emissions/oos-deferrals.
2023
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. Light, Medium and Heavy duty diesel powered vehicles in Davis County are required to follow these same requirements.
| Vehicle Model Year | Emission Inspection |
|---|---|
| 2023 | Not required |
| 2022 | Not required |
| 2021 | Required |
| 2020 | Not required |
| 2019 | Required |
| 2018 | Not required |
| 2017 to 1968 | Required |
| 1967 and older | Not required |
Exemptions
- New vehicles with an MSO
- Any non-diesel powered 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
- Off highway vehicles
- Electric vehicles
- Heavy duty diesel vehicles that meet all of the following criteria:
- Have an apportioned registration;
- Are 26,000 lbs. GVWR or greater;
- Have logged more than 50% of their miles outside of the state; and
- Are within the first three (3) model years.
- Vintage vehicles model year 1980 & older or custom vehicles
Note: A vintage vehicle that has a model year of 1981 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 daviscountyutah.gov/health/environmental-health-services/vehicle_emissions/out-of-state-emissions-deferrals.
2023
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 - 2018 require an emissions inspection in Utah County.
| Vehicle Model Year | Emission Inspection |
|---|---|
| 2023 | Not required |
| 2022 | Not required |
| 2021 | Required |
| 2020 | Not required |
| 2019 | Required |
| 2018 | Not required |
| 2017 to 1968 | Required |
| 1967 and older | Not required |
| Diesel Emission Tests | |
| 1998 to 2018 | 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 2019 and newer
- Vintage vehicles model year 1980 & older or custom vehicles
Note: A vintage vehicle that has a model year of 1981 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 https://www.utahcounty.gov/Dept/HealthEnvirAir/VehicleEDR.asp or contact cleanair@utahcounty.gov.
2023
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 |
|---|---|
| 2023 | Not required |
| 2022 | Not required |
| 2021 | Required |
| 2020 | Not required |
| 2019 | Required |
| 2018 | Not required |
| 2017 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 1980 & older or custom vehicles
Note: A vintage vehicle that has a model year of 1981 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 webermorganhealth.org/environmental-health-services/air-quality/out-of-state-deferral-program/
2023
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 |
|---|---|
| 2023 to 2018 | Not required |
| 2017 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) vehicles 1996 to 2007 model years with a GVWR greater than 8,500 lbs
- Vintage vehicles model year 1980 & older or custom vehicles
Note: A vintage vehicle that has a model year of 1981 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 brhd.org/forms/out-of-state-deferral-form/