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Regulations for Emissions from Vehicles and Engines

  • EPA Proposes Most Stringent Vehicle Emission Standards

    If finalized, EPA’s proposed standards for light, medium and heavy-duty vehicles will fight climate change and improve air quality for communities across the U.S.

    Learn more about the proposals:

    Light-Duty and Medium-Duty Vehicles

    Heavy-Duty Vehicles

Onroad

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  • Regulations for onroad vehicles and engines

Nonroad

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  • 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 to ask a question, provide feedback, or report a problem.
Last updated on May 3, 2023
United States Environmental Protection Agency

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