On Aug. 5, 2021, EPA released an NPRM proposing to revise the GHG standards that would begin in MY 2023 and increase in stringency year over year through MY 2026. EPA proposes to increase the stringency of the standards from the average roughly 1.5 percent year-over-year stringency increase of the relaxed SAFE standards to a nearly 10 percent proposed stringency increase in MY 2023, followed by a nearly 5 percent proposed stringency increase in each MY from 2024 through 2026. EPA requests comment on standards for MY 2026 that would result in fleet average target levels that are in the range of 5-10 g/mile lower (i.e., more stringent) than the levels proposed. The NPRM proposes to revise compliance incentives and flexibilities along with a discussion of longer-term actions for 2027 and beyond. Projected compliance costs and technology penetration rates are provided.
The EPA webpage for the rulemaking is https://www.epa.gov/regulations-emissions-vehicles-and-engines/proposed-rule-revise-existing-national-ghg-emissions
The comment deadline is September 27, 2021.
A public hearing is set to take place August 25, 2021.
Docket reference: EPA-HQ-OAR-2021-0208
EPA contact: Tad Wysor, Office of Transportation and Air Quality, Assessment and Standards Division (ASD), (734) 214-4332; wysor.tad@epa.gov.