Diesel Emissions Testing

Colorado Emission Testing for Diesel Vehicles

Diesel vehicles are not inspected by Air Care Colorado but instead fall under the oversight of the Department of Public Health and Environment, and need to be taken to state-certified independent facilities. Fees vary by location and a passing certificate is valid for one year. Engle Automotive is a State Certified Diesel Facility.

New-model, light-duty diesel vehicles are granted a two-year emissions test waiver.

Diesel Emissions Program Area
The full counties of Boulder, Jefferson, Broomfield, Denver, and Douglas, and the partial counties of Adams and Arapahoe, Larimer, Weld, and El Paso.

• Gross Vehicle Weight Rating (GVWR)
• Heavy-duty diesel vehicles - GVWR of 14,001 lbs. or more.
• Light-duty diesel vehicles - GVWR of 14,000 or less
• Temporarily Exempt Vehicles:
• Heavy-duty and light-duty diesel vehicles are exempt from emissions for the first four model years. After the exemption period, vehicles are required to be tested as instructed in Vehicle Emissions Testing Cycles below.
• Vehicle Emissions Testing Cycles
• Light-duty diesels that are 2003 and older are required to have an emissions test every year.
• Light-duty diesels that are 2004 and newer are required to have an emissions test every 2 years.
• Heavy-duty diesels that are less than 10 model years old are to have an emissions test every 2 years.
• Heavy-duty diesels that are more than 10 model years old are to have an emissions test every year.

For diesel emissions testing in Fort Collins, Loveland, Greeley and surrounding Northern Colorado cities Engle Automotive can take care of all your needs. Please call to set up your diesel emissions testing appointment today!

Our knowledgeable Service Advisors, Josh and Kristi will be happy to provide answers for all your auto repair needs. To schedule an appointment, get a Free Estimate or any questions please call (970) 635-9760 or Contact Us.