Specifications include, but are not limited to: All Passenger Vehicles [PassAUTO], less than 8,501lbs Gross Vehicle Weight Rating (GVWR), shall have a highwayfuel-economy-rating of 41 miles per gallon or better as rated by the U.S. Environmental Protection Agency. All Sport Utility Vehicles [LDT1], less than 8,501lbs Gross Vehicle Weight Rating (GVWR) shall have a highway fuel economy rating of 32 miles per gallon or better as rated by the U.S. Environmental Protection Agency. All Light-Duty Trucks [LDT1], with a gross vehicle weight rating (GVWR) up to 6,000lbs, shall have a highway fuel economy rating of 27 miles per gallon or better as rated by the U.S. Environmental Protection Agency. All Light-Duty Trucks [LDT1], with a gross vehicle weight rating (GVWR) between 6,001lbs and 8,500lbs, shall have a highway fuel economy rating of 25 miles per gallon or better as rated by the U.S. Environmental Protection Agency.