
Colorado Exemptions from Requirements/Restrictions
Low Emission Vehicle (LEV) Sales Tax Exemption
Vehicles, vehicle power sources, or parts used for converting a vehicle power source, including but not limited to wiring, fuel lines, engine coolant system, fuel storage containers, fuel control system, and other components associated with reducing the emissions characteristics of an engine or motor, certified to federal LEV standards or better are exempt from state sales tax. This exemption applies to vehicles, power sources, or parts for vehicles over 10,000 pounds gross vehicle weight rating. (Reference Colorado Revised Statutes 39-26-719)
Alternative Fuel Vehicle (AFV) Weight Limit Exemption
Gross vehicle weight rating limits for AFVs are 1,000 pounds greater than those for comparable conventional vehicles, as long as the AFVs operate using an alternative fuel or both alternative and conventional fuel, when operating on a highway that is not part of the interstate system. (Reference Colorado Revised Statutes 42-4-508)

