Corporate Average Fuel Economy (CAFE) Preemption

This document finalizes NHTSA's proposal to repeal in full "The Safer Affordable Fuel-Efficient (SAFE) Vehicles Rule Part One: One National Program," published September 27, 2019 (SAFE I Rule), in which NHTSA codified regulatory text and made additional pronouncements regarding the preemption of state and local laws related to fuel economy standards. NHTSA originally proposed to repeal the SAFE I Rule in a Notice of Proposed Rulemaking entitled "Corporate Average Fuel Economy Preemption," which was published on May 12, 2021. After evaluating all public comments submitted for this Proposal, the Agency is finalizing the Proposal. As such, the Agency is repealing all regulatory text and appendices promulgated in the SAFE I Rule. In doing so, the Agency underscores that any positions announced in preambulatory statements of prior NHTSA rulemakings, including in the SAFE I Rule, which purported to define the scope of preemption under the Energy Policy and Conservation Act (EPCA), do not reflect the Agency's reconsidered understanding of its proper role in matters of EPCA preemption. Through this final rule, NHTSA makes clear that no prior regulations or positions of the Agency reflect ongoing NHTSA views on the scope of preemption of states or local jurisdictions under EPCA.