Smog and Emissions Testing in Utah
Emissions testing in Utah is required for certain vehicles at regular intervals. Smog test rules vary according to the age and type of vehicle and the owner's county of residence. A UT emission inspection must take place no more than two months prior to the date of the vehicle registration renewal, and must be included in your registration paperwork to obtain a renewal. Continue reading to learn more about emissions inspections in Utah and your specific county's requirements and fees.
Utah Emissions and Smog Check Requirements
Emissions tests in UT are required every two years on all vehicles registered in Davis, Salt Lake, Utah and Weber counties with model years less than six years old. Emissions testing is conducted on an odd/even basis, meaning that vehicles with odd-numbered model years are tested in odd-numbered calendar years and vehicles with even-numbered model years are tested during even-numbered years. Most vehicles in these counties with model years six years and older must obtain smog checks every 12 months, unless the model year is 1967 or older. These older cars and trucks do not need a smog certificate to obtain car registration renewals.
In Cache County, vehicles are not required to have emissions testing during the first five model years. Vehicles that are six or more model years old must obtain smog certification every other year, on the same odd/even basis described above. Vehicles in Cache County have emissions test exemption status if they were manufactured in or before 1968.
Cars manufactured after 1996 will receive an On-Board Diagnostics (OBDII) emission inspection that utilizes the car's on-board computer for diagnostic purposes. During this brief smog test, the vehicle inspection technician connects an analyzing tool to the vehicle's computer and obtains readings that pinpoint any defects in the emissions system. Some vehicles, including older models without OBDII systems, will have a tailpipe smog test where an instrument inserted into the tailpipe captures and measures emission gases. Other types of emissions testing may take place as part of a full vehicle inspection, depending on the age of the vehicle and the type of fuel it uses.
Obtain your Utah emissions inspection no more than two months prior to your registration renewal date. If your vehicle meets the requirements outlined above, you must submit an official emissions testing result certificate as part of your car registration package.
Smog Check Exemptions in Utah
Smog check exemptions are extended to Utah vehicles registered in counties other than Cache, Davis, Salt Lake, Utah and Weber. Additionally, new vehicles in these counties are exempt from smog tests until their model year reaches two years or more (five years in Cache County). In Utah County, emissions testing is not required on diesel vehicles of any age. Motorcycles do not need to undergo DMV emissions testing to operate on roadways.
Out-of-State Emissions Testing in Utah
Utah car owners who are out-of-state with their vehicles at the time an emissions inspection is due need to complete Form TC-810, Exemption of Utah Safety and Emission Requirements for Vehicles Not in Utah. This form details out-of-state emission test requirements and includes spaces for information such as your temporary address, reason for relocation and the date you plan to return to Utah. Check the boxes indicating whether an emissions test can be performed in your current location or not, then submit it along with your vehicle registration paperwork to the address printed on the form that corresponds with your Utah county of residence. The second page of the form conveniently displays emissions test requirements in other states, to help you determine if you can obtain a smog check at your temporary location.
Emissions Waivers in Utah
Owners of vehicles that repeatedly fail Utah emissions testing, even after obtaining necessary repairs, may apply for an emission waiver through the county's Inspection/Maintenance (I/M) Program. Vehicles eligible for a smog test waiver must never have received one in the past, and you must have receipts proving that the repairs were made by a certified mechanic at a certified repair facility. The total amount spent on smog certification related repairs must meet a certain minimum that will vary by county, based on the age and type of vehicle. An authorized representative of the I/M program must approve every emissions testing waiver before issuing it.
Testing Fees in Utah
Utah emissions testing fees vary by county and each county adds a small fee to cover emissions programs, between $1 and $3. In Cache County, the vehicle emissions inspection fee may not exceed $20. Davis County has no emissions test fee limits, as each emissions inspection station self-regulates its own fees. In Salt Lake and Utah Counties, each emissions testing center sets its own smog check fees and the average paid in these counties is $25. Weber County has a flat rate maximum smog test fee of $30.
Where to Perform an Emissions Check in Utah
Obtain an emissions test in Utah at any certified I/M station. Located within garages, repair shops, dealerships and other vehicle-centric businesses, a certified smog check station can be identified by the large blue and white signs.
Failing a Utah Smog and Emissions Test
After failing an emissions test, obtain any suggested repairs and have a retest as soon as possible. If your vehicle fails a second emissions test, despite having the system flaws repaired, contact your county's I/M program for information on obtaining an emissions inspection waiver for car registration purposes.