Status

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The EPA published a proposal containing updated emissions requirements for light duty and medium duty vehicles in May 2023; this was finalized in April 2024. The new standards apply from MY 2027.

Content overview

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Overview of the regulation for MY 2027 and after

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Emissions standards for light and medium duty vehicles - from MY 2027

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• Applicability
• Fleet average NMOG+NO_X requirements
• NMOG+NO_X emissions requirements and bin definition
• PM emissions limits
• CO and HCHO emissions limits
• Additional requirements
• Phase-in schedule for the criteria pollutants requirements
• Requirements for medium-duty vehicles with high GCWR
• Battery durability requirements

Applicability

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Fleet average NMOG+NO_X requirements

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NMOG+NO_X emissions requirements and bin definition

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PM emissions limits

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CO and HCHO emissions limits

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Additional requirements

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Phase-in schedule for the criteria pollutants requirements

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Requirements for medium-duty vehicles with high GCWR

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Battery durability requirements

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Historical Data

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• Proposed standards - May 2023

Proposed standards - May 2023

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References

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