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EPA Low NOx (EPA27)

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  • EPA Low NOx (EPA27)

Control of Air Pollution from New Motor Vehicles: Heavy-Duty Engine and Vehicle Standards

  • Finalized in December 2022
  • 35mg NOx standard starting in MY2027
  • Longer EUL, Warranty etc. among other changes
  • CARB27 to align with EPA27 NOx regulation – Announced in July 2023