EPA and NHTSA Issue GHG Emissions and Fuel Economy Rulings

The U.S. Environmental Protection Agency (EPA) issued the Revised 2023 and Later Model Year (MY) Light-Duty Vehicle Greenhouse Gas (GHG) Emissions Standards Final Rule in December 2021, which establishes new GHG emissions standards for passenger cars and light trucks from MY 2023 through MY 2026. This ruling is the result of Executive Order 13390, which required the EPA to establish ambitious fuel economy standards. For more information, refer to EPA’s Regulations for Emissions from Vehicles and Engines website.

Additionally, the U.S. Department of Transportation's National Highway Traffic Safety Administration (NHTSA) published the Corporate Average Fuel Economy (CAFE) Preemption Final Rule in December 2021, which repealed The Safer Affordable Fuel-Efficient (SAFE) Vehicles Rule Part One: One National Program. The repeal of SAFE I Rule allows states to set stricter automobile tailpipe emission standards for GHGs. For more information, refer to NHTSA's CAFE website.