Welcome to the Connecticut Emissions Program

The Connecticut Emissions Program identifies vehicles that are high emitters, and requires that they be repaired to prevent excessive air pollution. If your vehicle failed its emissions test, it is exceeding the allowable emissions standards for the year in which it was manufactured. Vehicles that fail need to be repaired and retested within sixty (60) calendar days from the date of the initial test. Emissions tests identify the specific area(s) where a vehicle is deficient; however, it does not diagnose the cause of failure.

If your vehicle fails its initial test, it is entitled to one (1) free retest per test cycle, not per paid test. You may request the free retest at any Emissions Test Center within sixty (60) consecutive calendar days.

You may always have your vehicle repaired at a repair facility of your choice, or you may make the repairs yourself.  However, the State of Connecticut Department of Motor Vehicles (DMV) highly recommends that you have the repairs performed at a Certified Emissions Repair Facility (CERF), as these facilities are required to employ Certified Emissions Repair Technicians (CERT), who are trained and certified in special classes which focus on emissions-related failures and repairs.  If your vehicle fails a second test, it may qualify for a cost waiver, provided the repairs are performed by a CERT and the expenditure criteria is met.