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This is not the current EPA website. To navigate to the current EPA website, please go to www.epa.gov. This website is historical material reflecting the EPA website as it existed on January 19, 2025. This website is no longer updated and links to external websites and some internal pages may not work. More information »

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Regulations for Emissions from Vehicles and Engines

  • EPA finalizes Most Stringent Vehicle Emission Standards

    EPA has finalized standards for passenger cars, light-duty trucks, medium-duty vehicles, and heavy-duty vehicles for model years 2027 through 2032 and beyond.

    For more information please visit:

    Light- and Medium-duty Vehicles

    Heavy-Duty Vehicles

Onroad

" "
  • Regulations for onroad vehicles and engines

Nonroad

" "
  • Regulations for nonroad vehicles and engines

Greenhouse Gas

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Regulations for:
  • Light-duty passenger cars & trucks
  • Commercial trucks & buses
  • Aircraft
  • Federal fleets (EISA 141)

Related Topics

  • Certification and Compliance for Vehicles and Engines
  • Vehicles and Engines
  • Green Vehicle Guide
  • Fuels Registration, Reporting, and Compliance Help 
  • Air Enforcement
  • Diesel Fuel Standards
  • Gasoline Standards
  • Renewable Fuel Standard Program
  • Violations and Recalls of Vehicles and Engines
Contact Us About Regulations for Emissions from Vehicles and Engines to ask a question, provide feedback, or report a problem.
Last updated on November 20, 2024
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