More Information

Metro Denver's Emissions Testing Program:
Air Care Colorado

Subsidized Repair Program:
Repair Your Air

Frequently Asked Questions 

Colorado Department of Revenue -- Enforcement

Roadside Emissions Testing

High Polluting Vehicle

Finding and repairing high-polluting vehicles in the Denver-metropolitan area using roadside testing equipment is a legislatively mandated component of the Colorado Automobile Inspection and Readjustment (AIR) program.

Beginning in January 2008, if a vehicle is identified as high polluting by roadside testing equipment the owner is required by law to present the vehicle for an emissions compliance inspection. If the the roadside data is confirmed, the vehicle must be repaired and pass a follow-up inspection. The inspection is free to the owner.

Here is how the program works (follow the links for additional information):

1. Vehicle is identified as high-polluting by roadside emissions monitors. 

2. Notification letter is sent to registered owner of the vehicle. 

• Penalties assessed if letter is ignored. 
• Call state to schedule a compliance inspection. The number is listed in the notification letter you received. 

3. Vehicle completes an I/M 240 emissions compliance inspection. 

• Test Result Information

4. Vehicle is repaired to meet state standards.

• Choose a repair shop 

• Possible financial assistance with repairs 

5. Vehicle undergoes a follow-up emissions compliance inspection and receives passing inspection report.

For additional information, please call the Air Care Colorado hotline at (303) 456-7090 and press 0 for an operator, or e-mail comments.apcd@state.co.us.

Air Division Home | Mobile Sources Home