Correction of August 17, 2023
CAFE 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; Correction.
Proposal of August 17, 2023
CAFE 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.
Proposal of July 14, 2026
Amendments and Nonconformance Penalties for Model Year 2027 and Later Heavy-duty Highway Engines and Amendments to Inducement Provisions for SCR-equipped Diesel Engines.
Proposal of June 21, 2022
Revisions and Confidentiality Determinations for Data Elements Under the Greenhouse Gas Reporting Rule. Abridged.
Proposal of May 5, 2023
Multi-pollutant Emissions Standards for Model Years 2027 and Later Light-duty and Medium-duty Vehicles.
Proposal of May 22, 2023
Revisions and Confidentiality Determinations for Data Elements Under the Greenhouse Gas Reporting Rule (Abridged).
Proposal of May 22, 2023
Revisions and Confidentiality Determinations for Data Elements Under the Greenhouse Gas Reporting Rule - Abridged.
Proposal of May 24, 2024
Electric-powered Vehicles: Electric Powertrain Integrity Global Technical Regulation No. 20, Incorporation by Reference.
Proposed Rule of June 17, 2025
Renewable Fuel Standard (RFS) Program: Standards for 2026 and 2027, Partial Waiver of 2025 Cellulosic Biofuel Volume Requirement, and Other Changes.
Supplemental Proposed Rule of September 18, 2025
Renewable Fuel Standard (RFS) Program: Standards for 2026 and 2027, Partial Waiver of 2025 Cellulosic Biofuel Volume Requirement, and Other Changes; Supplemental Notice of Proposed Rulemaking.