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
- Salt Lake County
- Davis County
- Utah County
- Weber County
- Cache County
2021
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 |
|---|---|
| 2021 | Not required |
| 2020 | Not required |
| 2019 | Required |
| 2018 | Not required |
| 2017 | Required |
| 2016 | Not required |
| 2015 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
- Vintage or custom vehicles
- Maintenance or construction vehicles not designed or licensed to operate on a highway
- Military tactile vehicles
2021
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 |
|---|---|
| 2021 | Not required |
| 2020 | Not required |
| 2019 | Required |
| 2018 | Not required |
| 2017 | Required |
| 2016 | Not required |
| 2015 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
- Any vintage or custom vehicles
- Heavy duty diesel vehicles that meet all of the following:
- Have an IRP registration
- Have a GVWR of 26,000 lbs or greater
2021
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 - 2016 require an emissions inspection in Utah County.
| Vehicle Model Year | Emission Inspection |
|---|---|
| 2021 | Not required |
| 2020 | Not required |
| 2019 | Required |
| 2018 | Not required |
| 2017 | Required |
| 2016 | Not required |
| 2015 to 1968 | Required |
| 1967 and older | Not required |
| Diesel Emission Tests | |
| 1998 to 2016 | 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
- Tactical military vehicles
- Diesel powered vehicles with a model year 1997 & older
- Any vintage or custom vehicle
- Off highway vehicles
- Any diesel vehicle with a GVWR greater than 14,000 lbs.
- Diesel vehicles 2017 and newer
2021
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 |
|---|---|
| 2021 | Not required |
| 2020 | Not required |
| 2019 | Required |
| 2018 | Not required |
| 2017 | Required |
| 2016 | Not required |
| 2015 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
- Tactical military vehicles
- Any diesel vehicle 1997 & older or with a GVW greater than 14,000 lbs.
- Off highway vehicles
- Vintage or custom vehicles
2021
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 |
|---|---|
| 2021 to 2016 | Not required |
| 2015 to 1969 | Biennial |
| 1968 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
- Tactical military vehicles
- Any vintage or custom vehicle
- Off highway vehicles
- Any vehicle less than six years old
- Any diesel vehicle 1997 & older or with a GVWR greater than 14,000 lbs.