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Connecticut residents are urged to continue taking precautions to prevent the spread of COVID-19. For information on emissions test safety, please visit
The following vehicles are exempt from the Connecticut Emissions Program:
  • Vehicles younger than four model-years old;
  • Model year 1998 and older vehicles;
  • Vehicles with a gross vehicle weight rating of 10,001 pounds or more;
  • Composite Vehicles (vehicle must be titled as a composite vehicle);
  • Full electric-powered (non-hybrid);
  • Bicycles with motors attached;
  • Motorcycles;
  • Certain vehicles registered but not designed primarily for highway use;
  • Farm vehicles;
  • Diesel – Powered Type II School Buses; (under 10,000 lbs GVWR)
  • Vehicles with Dealer, Repairer, or Transporter Plates (only for the purpose of transportation during wholesale or auction).