Questions regarding vehicle registration should be directed to the Department of Motor Vehicles (DMV).
DMV Office in Utah County- New gas vehicles are exempt from emission testing for the first two years.
- Gas vehicles seven model years and older are required to have an emissions test every year for registration.
- Gas vehicles six model years and newer are required to have an emissions test every two years.
- Even model year vehicles require an emissions test during even years, and odd model year vehicles require an emissions test during odd years.
Questions regarding the emissions (I/M) program in Utah County should be directed to the Bureau of Air Quality
- New light duty diesel vehicles are exempt from emission testing for the first 5 years.
- 1997 and older model year diesel vehicles are exempt from emission testing.
- 1998 - 2006 model year light duty diesel vehicles require a visual tampering inspection.
- 2007 and newer diesel vehicles require a visual tampering and OBD inspection.
- All heavy duty diesel vehicles over 14,000 GVWR are exempt from emissions testing in Utah County.
Depending on the model year of the vehicle, safety inspection may or may not be required. For more information, contact the Bureau of Air Quality at 851-7600, or the Highway Patrol at 234-8285.
There are nearly 200 privately owned businesses certified to perform emissions tests in Utah County. These garages, repair shops, dealers, etc. can be recognized by large blue & white signs designating them as certified I/M stations. A complete list of all certified I/M stations in Utah County is available on the. There is no set fee for an emissions test in Utah County. Certified I/M stations are allowed to determine what they will charge for an emissions test, provided the fee amount is posted.
OBDII stands for: On Board Diagnostics.
Persons desiring to become I/M certified are required to first pass a 100 question pretest on basic automotive mechanics. The pretest can be taken at the Bureau of Air Quality Programs any weekday from 9:00 a.m. to 2:00 p.m. There is no charge to take the pretest, a picture ID is required. You may take the pretest exam a total of two times in a 6 month period, waiting at least a week between attempts.
Persons not passing the exam by the second attempt are encouraged to enroll in the "Utah County Emissions Test Preparation Training Course" taught by MTECH or Salt Lake Community College. Information about this course can be obtained by calling 801-753-6282 for MTECH or \ 801-957-7522 for SLCC. After completion of the pretest prep training you may take the pretest again. Upon payment of $125 the student will be placed in the next available seat for our emissions certification course.
All light duty cars and trucks must pass an approved emissions test if they are within the first 2 years of vehicle use and under 24,000 miles. There are three (3) major emissions components covered for 8 years 80,000 miles. They are the Catalytic Converter, the PCM (Powertrain Control Module) and the OBD (On Board Diagnostics) device (1996 and newer). It is vital for all 1996 and newer light duty vehicles to communicate with the Utah County emissions analyzer. If the emissions analyzer is unable to communicate with your vehicle, this problem must be repaired before the test may continue.
Follow this link to view the failed VIR printed with ALL test failures.