Vehicle Fuel Economy and Greenhouse Gas Standards: Frequently Asked Questions [May 24, 2018] [open pdf - 1MB]
"The Trump Administration announced on April 2, 2018, its intent to revise through rulemaking the federal standards that regulate fuel economy and greenhouse gas (GHG) emissions from new passenger cars and light trucks. These standards include the Corporate Average Fuel Economy (CAFE) standards promulgated by the U.S. Department of Transportation's National Highway Traffic Safety Administration (NHTSA) and the Light-Duty Vehicle GHG emissions standards promulgated by the U.S. Environmental Protection Agency (EPA). They are known collectively-- along with California's Advanced Clean Car program--as the National Program. NHTSA and EPA promulgated the second (current) phase of CAFE and GHG emissions standards affecting model year (MY) 2017-2025 light-duty vehicles on October 15, 2012. Like the initial phase of standards for MYs 2012-2016, the Phase 2 rulemaking was preceded by a multiparty agreement, brokered by the White House. The agreement included the State of California, 13 auto manufacturers, and the United Auto Workers union. The manufacturers agreed to reduce GHG emissions from most new passenger cars, sport utility vehicles, vans, and pickup trucks by about 50% by 2025, compared to 2010, with fleet-wide fuel economy rising to nearly 50 miles per gallon."
CRS Report for Congress, R45204
Federation of American Scientists: http://www.fas.org/sgp/crs/index.html