Data / Federal rules / 2025-14572
Reconsideration of 2009 Endangerment Finding and Greenhouse Gas Vehicle Standards
The Environmental Protection Agency published this proposed rule in the Federal Register on August 1, 2025. Comments closed on September 15, 2025.
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What the agency says
In this action, the U.S. Environmental Protection Agency (EPA) is proposing to repeal all greenhouse gas (GHG) emission standards for light-duty, medium-duty, and heavy-duty vehicles and engines to effectuate the best reading of Clean Air Act (CAA) section 202(a). We propose that CAA section 202(a) does not authorize the EPA to prescribe emission standards to address global climate change concerns and, on that basis, propose to rescind the Administrator's prior findings in 2009 that GHG emissions from new motor vehicles and engines contribute to air pollution which may endanger public health or welfare. We further propose, in the alternative, to rescind the Administrator's prior findings in 2009 because the EPA unreasonably analyzed the scientific record and because developments cast significant doubt on the reliability of the findings. Lastly, we propose to repeal all GHG emission standards on the alternative bases that no requisite technology for vehicle and engine emission control can address the global climate change concerns identified in the findings without risking greater harms to public health and welfare.
Key facts
- Document number
- 2025-14572
- Type
- Proposed rule
- Action
- Proposed rule
- Agency
- Environmental Protection Agency
- Published
- August 1, 2025
- Comments due
- September 15, 2025
- Dates
- Comments. Comments must be received on or before September 15, 2025. Comments on the information collection provisions submitted to the Office of Management and Budget (OMB) under the Paperwork Reduction Act (PRA) are best assured of consideration by OMB if OMB receives a copy of your comments on or before September 2, 2025.
- Docket
- EPA-HQ-OAR-2025-0194; FRL-12715-01-OAR
- Regulation ID (RIN)
- 2060-AW71
- Code of Federal Regulations
- 40 CFR 85; 40 CFR 86; 40 CFR 600; 40 CFR 1036; 40 CFR 1037; 40 CFR 1039
- Topics
- Administrative practice and procedure; Air pollution control; Confidential business information; Electric power; Environmental protection; Fuel economy; Greenhouse gases; Imports; Incorporation by reference; Labeling; Motor vehicle pollution; Penalties; Reporting and recordkeeping requirements; Warranties
- Significant
- Yes, under Executive Order 12866
- Pages
- 78
Other documents from the Environmental Protection Agency
Everything from the Environmental Protection Agency · Rules on administrative practice and procedure · Rules on air pollution control · Rules on confidential business information · Published in August 2025
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