Accelerate moderately as you pass the testing van. Moderate acceleration is required to produce the most representative sample of your vehicle’s exhaust emissions. Therefore, deceleration or heavy acceleration may result in an invalid reading.

Air Care Colorado

County Motor Vehicle Offices

Please click on a county below. This will display a map with the address, phone number, hours, and website for each of the county's motor vehicle registration offices.

While we attempt to keep these listings current, this information can change without notice, so please call ahead.

Adams

Arapahoe

Boulder

Broomfield

Denver

Douglas

Jefferson

Larimer

Weld

Note: The enhanced emissions program operates in Adams, Arapahoe, Boulder, Broomfield, Denver Douglas, Jefferson, Larimer and Weld counties.