Masks or shields requested.

While testing procedures were modified to speed the testing process and minimize close personal contact, we are beginning to go back to the normal testing process. Safety is still our top priority and we are doing all we can to ensure a safe environment for all. Our emissions inspectors are committed to keeping everyone as safe as possible. We request that you do not visit if you are feeling ill, wear a mask if possible, and continue to socially distance in public station areas. If you are wearing a mask, you may request that your inspector wear a mask as well.

Where to Go

The Air Care Colorado Inspection and Maintenance (I/M) Program is a network of 18 stations conveniently located throughout the Denver-metropolitan area and the North Front Range. Additionally, 18 RapidScreen roadside data collection units are set up and rotated among state-approved locations throughout the program area.

Depending upon the vehicle, Air Care Colorado stations use three different testing methods to evaluate emissions as part of the overall emissions inspection. They are:

  • 1982-and-newer vehicles: either an I/M240 dynamometer (treadmill) test or On-Board Diagnostics (OBD) “plug-in” test
  • 1981-and-older vehicles: a two-speed idle test

    **Air Care Colorado stations DO NOT TEST DIESEL-POWERED VEHICLES.
    You can find a list of diesel emissions inspection stations by clicking on the link below.

Find inspection stations and RapidScreen sites near you, and diesel inspection stations, and county motor vehicle offices.

LOW PROFILE RIMS & OVERSIZED TIRES - Please note that front-wheel and all-wheel drive vehicles with low-profile rim sizes 17-inches-or-larger in diameter or vehicles with wheel sizes larger than 34 inches must be tested on special dynamometers capable of testing vehicles with these unusual features. Please take your vehicle to the Sheridan, Boulder, Ken Caryl or Fort Collins stations for inspection. These are the only stations in the program area equipped with specialized dynamometers that can test these vehicles.

© 2018 Envirotest