For what years and at what levels have the light truck CAFE standards been set?
Congress did not specify a target for the improvement of light truck fuel economy. Instead, it provided that light truck standards be set at the maximum feasible level for model year 1979 and each model year thereafter. Unlike for the passenger car fleet, there is no default standard established for light trucks. NHTSA must set the standard for each model future model year. Light truck fuel economy standards have been established by NHTSA for MY 1979 through MY 2007. Light truck fuel economy requirements were first established for MY 1979 (17.2 mpg for 2-wheel drive models; 15.8 mpg for 4-wheel drive). Standards for MY 1979 light trucks were established for vehicles with a gross vehicle weight rating (GVWR) of 6,000 pounds or less. Standards for MY 1980 and beyond are for light trucks with a GVWR of 8,500 pounds or less. The light truck standard progressively increased from MY 1979 to 20.7 mpg and 19.1 mpg, respectively, by MY 1991. From MY 1982 through 1991, manufacturers were allowed
