US Federal - Fuel Economy & CO2 emissions - 1

Status - Light Duty Vehicles

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Phase 2 CO2 emissions and fuel economy standards are in place from model year 2017. Amendments to the CO2 emissions and fuel economy standards for model years 2021 to 2026 were published, in final form, in April 2020. Proposed amendments, to further modify CO2 emissions standards for model years 2023 to 2026, were issued in August 2021, these were finalized in December 2021. Updated fuel economy standards for model years 2024 to 2026 were published in May 2022.

Status - Heavy Duty Vehicles

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Medium and heavy-duty greenhouse gas and fuel economy standards have been effective from the 2014 model year (Phase 1). Phase 2 standards were published in October 2016; they apply from MY 2021. 

Development of Light Duty Vehicles regulations

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Initial Phase 2 standards

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SAFE Vehicles Rule and further amendments

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LD vehicles - amended CO2 emissions standards

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Overview

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CO2 emissions targets

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Calculation of targets for passenger cars

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Calculation of targets for light trucks

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Compliance and programme flexibilities

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LD vehicles - amended fuel economy standards

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Overview

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Fuel economy targets

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Heavy Duty Vehicles - Phase 2 standards

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Development and initial implementation of the standards

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Updates to the GHG emissions standards

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Certification

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Combination tractors

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Trailers

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Heavy-duty pick-up trucks and vans

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Vocational vehicles

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Engine test procedures and standards

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Programme flexibilities

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Test Procedures

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Light Duty Vehicles

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Heavy Duty Vehicles

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Historical Data -Proposed amendments to Phase 2 heavy duty vehicles standards

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Overview

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Vocational vehicles

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Combination tractors

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Proposed amendments to programme flexibilities

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Historical Data - LD Vehicles - Phase 1 and superseded Phase 2

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Phase 1 standards

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Superseded Phase 2 standards

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Historical Data - LD vehicles - SAFE Vehicles Rule

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Overview

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CO2 emissions targets

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Fuel economy targets

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Additional technical requirements and programme flexibilities

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Historical Data - Phase 1 - Heavy Duty Vehicles

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Introduction

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Combination Tractors

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Heavy-duty Pick-up Trucks and Vans

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Vocational Vehicles

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N2O and CH4 Limits

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Programme Flexibilities

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References

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Last update: 24/04/2024