Car Inspection in IdahoPage Overview
It might seem like a hassle to keep your car running clean, but emissions checks aren't just proper for the environment (and your fellow drivers). For some, smog and emissions checks are the law.
When gasoline or diesel doesn't fully combust, it becomes what we know as vehicle emissions.
However, gas isn't the only culprit that contributes to clouding our air. Also adding to the problem are:
- Emission controls.
- Engine design.
- Improper car care.
The result is a combination of pollutants such as:
- Carbon monoxide.
- Carbon dioxide.
- Nitrogen oxides.
- Sulfur oxides.
- Dangerous organic compounds.
Per the Idaho Vehicle Inspection Program (IDVIP), only vehicles in Canyon County and the City of Kuna in Ada County must undergo smog and emissions testing. (See "Exempt Vehicles" below for further details.)
You'll receive a notice in the mail when it's time to test your vehicle. Have your vehicle tested at any of the state's several testing locations.
You can check the time online using the state's Test Due Date tool. The same tool will find your emissions test results.
For more information, check the IDVIP's FAQs .
Failing the Emissions Test
If you pass the test, congratulations! You can go on about your day.
However, if you fail the test, you'll receive a report detailing why your vehicle failed the smog and emissions check. Once you have made the necessary repairs, you can get your vehicle retested for free if you go within 30 days. If your vehicle fails again, the next retest is $10.
Learn more about how to handle failed tests at What If Your Vehicle Fails?
Some vehicles are exempt from smog and emissions checks; most notably, certain "green vehicles."
If you drive a hybrid electric vehicle (HEV) or electric vehicle (EV), your vehicle is exempt from testing.
(For more information on the perks of driving eco-friendly vehicles such as saving money (and time!), check out our Green Driver State Incentives in Idaho page.)
Other exemptions include:
- Model years fewer than 5 years old.
- Model years older than 1981.
- Classic automobiles.
- Vehicles with Gross Vehicle Weight Ratings (GVWR) of fewer than 1,500 pounds.
- Motor homes.
- Motorized farm equipment or any vehicle defined as a farm vehicle.
Otherwise, again, if you live and register your vehicle anywhere other than Canyon County or the City of Kuna in Ada County, you must bring your vehicle for an emissions inspection.Local Smog Check Stations
Choose a CountyOther Topics in This Section
Organ Donation Survey
- Register Car
- Registration Renewal
- Registration & Insurance
- Replacing a Lost Registration
- RV & Motorhome Registration
- Custom Built Car Registration
- Boat Registration and Licenses
- Title Transfers
- Replacing a Lost Title
- Salvaged Vehicles
- Special Vehicles
- Drivers with Disabilities
- License Plates & Placards
- Car Inspection
Are you currently registered as an Organ Donor?
Thank you! Besure to keep your registration up to date.Update Your Organ
Donor Information ▸