Final Rule and Related Materials for Control of Air Pollution from New Motor Vehicles: Heavy-Duty Engine and Vehicle Standards
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Rule Summary
On December 20, 2022, EPA adopted a final rule, “Control of Air Pollution from New Motor Vehicles: Heavy-Duty Engine and Vehicle Standards,” that sets stronger emissions standards to further reduce air pollution, including pollutants that create ozone and particulate matter, from heavy-duty vehicles and engines starting in model year 2027. The final program includes new, more stringent emissions standards that cover a wider range of heavy-duty engine operating conditions compared to today's standards, and it requires these more stringent emissions standards to be met for a longer period of time of when these engines operate on the road. This final rule is consistent with former President Biden’s Executive Order, “Strengthening American Leadership in Clean Cars and Trucks” and is the first step in the Clean Trucks Plan. The final rule also includes amendments regarding the confidentiality of certain information submitted to EPA for engines, vehicles, and equipment subject to emission standards and other requirements under the Clean Air Act. In addition, the final rule includes other limited amendments to the regulations that implement our air pollutant emission standards for other sectors (e.g., light-duty vehicles, marine diesel engines, locomotives, various types of nonroad engines, vehicles, and equipment).
- Final Rule (pdf) (19.0 MB, Federal Register published version, January 24, 2023)
- Final Rule (pdf)
Rule History
- Proposed Rule and Related Materials for Control of Air Pollution from New Motor Vehicles: Heavy-Duty Engine and Vehicle Standards
- Advance Notice of Proposed Rule: Control of Air Pollution from New Motor Vehicles: Heavy-Duty Engine Standards
Additional Resources
- Fact Sheet: Heavy-Duty 2027 and Beyond: Clean Trucks Final Rulemaking (pdf) (December 2022, EPA-420-F-22-031)
- Vehículos pesados, de 2027 en adelante: Reglamentación final sobre camiones limpios (pdf) (December 2022, EPA-420-F-22-032)
- Regulatory Impact Analysis: Control of Air Pollution from New Motor Vehicles: Heavy-Duty Engine and Vehicle Standards Regulatory Impact Analysis (pdf) (December 2022, EPA-420-R-22-035)
- Response to Comments: Control of Air Pollution from New Motor Vehicles: Heavy-Duty Engine and Vehicle Standards Response to Comments (pdf) (December 2022, EPA-420-R-22-036)
- Draft Technical Support Document (TSD) (pdf) (February 2022, EPA-420-D-22-002)
- Redline Version of EPA’s Final Regulatory Amendments (pdf)