Connecticut
For Connecticut, counties where testing is required is throughout the state; how often is tested every two years; program / authority is Emissions Testing Program, verified against its source on 2026-08-19.
- State
- Connecticut our reading
- Counties where testing is required
- throughout the state verified
- How often
- tested every two years verified
- Program / authority
- Emissions Testing Program verified
- Vehicles covered / exempt
- 2001 and newer gasoline-powered and 2001 and newer diesel-powered vehicles with the Gross Vehicle Weight Rating (GVWR) less than 8,501 pounds per ctemissions.com
Values marked our reading are our classification of what the source says — the source does not print them in those words. The quote below is the evidence for each one; judge it yourself.
What the source says
Vehicles are tested every two years by a network of more than 200 privately owned automotive service facilities located at convenient locations throughout the state.
— ctemissions.com, retrieved 2026-08-19
What ctemissions.com says
Vehicles subject to OBD testing include 2001 and newer gasoline-powered and 2001 and newer diesel-powered vehicles with the Gross Vehicle Weight Rating (GVWR) less than 8,501 pounds.
— ctemissions.com, retrieved 2026-08-19
Sources
- ctemissions.comhttps://www.ctemissions.com/
- ctemissions.comhttps://www.ctemissions.com/types-of-vehicle-testing