Published on: 2024-05010. Final rule. 2024-05010. Improvements for Heavy-Duty Engine and Vehicle Fuel Efficiency Test Procedures, and Other Technical Amendments
Published on: 2023-16515. Notice of proposed rulemaking. 2023-16515. Corporate Average Fuel Economy Standards for Passenger Cars and Light Trucks for Model Years 2027-2032 and Fuel Efficiency Standards for Heavy-Duty Pickup Trucks and Vans for Model Years 2030-2035
Published on: 2022-17134. Proposed rule. 2022-17134. Improvements for Heavy-Duty Engine and Vehicle Fuel Efficiency Test Procedures, and Other Technical Amendments
Published on: 2020-06967. Final rule. 2020-06967. The Safer Affordable Fuel-Efficient (SAFE) Vehicles Rule for Model Years 2021-2026 Passenger Cars and Light Trucks
Published on: 2016-21203. Final rule. 2016-21203. Greenhouse Gas Emissions and Fuel Efficiency Standards for Medium- and Heavy-Duty Engines and Vehicles-Phase 2
Published on: 2015-15500. Proposed rule. 2015-15500. Greenhouse Gas Emissions and Fuel Efficiency Standards for Medium- and Heavy-Duty Engines and Vehicles-Phase 2
Published on: 2013-19880. Partial withdrawal of direct final rule; direct final rule. 2013-19880. Heavy-Duty Engine and Vehicle and Nonroad Technical Amendments