2017-2025 CAFE/GHG rule

Last updated: 26 June 2020
U.S. Tier 3 standards phase in from 2017–2025 and apply to vehicles up to 14,000 lbs gross vehicle weight. Once fully phased-in, Tier 3 tailpipe PM and NOx+NMOG emission limits for light- and medium-duty passenger vehicles are the most stringent in the world.

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End uses covered
  • Transport end-uses
  • Private passenger transport
  • Freight transport