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
2020
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
2020
Not required
2019
Not required
2018
Required
2017
Not required
2016
Required
2015
Not required
2014 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
2020
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
2020
Not required
2019
Not required
2018
Required
2017
Not required
2016
Required
2015
Not required
2014 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
2020
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 - 2015 require an emissions inspection in Utah County.
Vehicle Model Year
Emission Inspection
2020
Not required
2019
Not required
2018
Required
2017
Not required
2016
Required
2015
Not required
2014 to 1968
Required
1967 and older
Not required
Diesel Emission Tests
1998 to 2015
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 2016 and newer
2020
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
2020
Not required
2019
Not required
2018
Required
2017
Not required
2016
Required
2015
Not required
2014 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
2020
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
2020 to 2015
Not required
2014 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.
