Emissions

Motor vehicles are the largest source of a number of air pollutants in Vermont, including greenhouse gases, air toxics, the ozone precursors (volatile organic compounds and nitrogen oxides), and carbon monoxide.

Time Extension Waiver

The state of Vermont recognizes that emissions repairs not covered under warranty can be costly. There is a time extension waiver available to allow for additional time to bring your vehicle into compliance.

My vehicle did not pass inspection. What next?

If your vehicle failed a safety component, speak to your repair technician and have it repaired immediately. You must pass the safety portion of the vehicle inspection in order to receive a pass sticker.

If your vehicle failed the on-board diagnostic (OBDII) part of the inspection, it is likely that your vehicle’s engine and/or emissions control system needs repairs. Review your Vehicle Inspection Report (VIR) to understand the reasons for failure. Your inspection mechanic should be able to answer your questions.

Why do we have emissions testing?

Federal law requires Vermont to have an emissions testing program. Ensuring your vehicle is in proper working order allows for;

  • Early detection of defects that lead to repairs that improve vehicle performance and fuel economy.
  • Repairing a defect before it gets worse saves money.
  • Protecting our environment and our health by identifying vehicle problems that cause increased air pollution.

Vehicle Readiness

OBD II technology monitors all components of the engine management system and can detect a malfunction or deterioration of these components usually well before the driver becomes aware of any problem. Vehicles equipped with OBD II self-test their emission systems while the vehicle is being driven. Vehicles perform up to 11 system tests, depending on year, make and model of the vehicle. Readiness status identifies whether the vehicle's computer has completed the required tests since the last time the vehicle was serviced with a scan tool or had its battery disconnected.

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Contact Us

Vermont Department of Motor Vehicles
120 State Street
Montpelier, VT 05603-0001

Monday-Friday: 7:45am-4:30pm
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