Colorado Department of Revenue

Gas Vehicles

Person Filling up Car with Gas

Enhanced Program Area

The full counties of Boulder, Broomfield, Denver, Douglas and Jefferson as well as the partial counties of Adams and Arapahoe.

 

Basic Gasoline Emissions Program

Larimer, Weld and El Paso counties no longer require emission testing of gas powered vehicles.

 

Questions:

If you reside in or out of the program area in the partial counties of:

  • Adams (303-654-6010)
  • Arapahoe (303-795-4500)

 

Tests in the Enhanced Area:

  • Tests for 1982 and newer vehicles in the seven Denver area counties are done by Envirotest Inc., doing business as Air Care Colorado.
  • Tests for 1981 and older vehicles may go to Air Care Colorado or independent testing facilities within the Enhanced area.

 

Costs:

  • Vehicles 1982 and newer are $25.00
  • Vehicles 1981 and older are $15.00