US Federal - Fuel Economy & CO2 emissions

Status - Light-duty

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Fuel economy and greenhouse gas emissions standards have been effective since the 2012 model year (Phase 1) and revised standards are in place for model years 2017 to 2025 (Phase 2). A draft regulation, proposing amendments for the 2021-2026 model year standards, was published in 2018.

Status - Heavy-duty

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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; their phase-in will start with model year 2018 or 2021, depending on the type of vehicle, and the final standards will apply from model year 2027.

Phase 2 - Light-duty - from 2017

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Development of the regulations

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SAFE Vehicles Rule

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Original 2017-2025 standards

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Phase 1 - Heavy-duty

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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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Phase 2 - Heavy-duty

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Introduction

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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

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Heavy-duty

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Historical Data

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Phase 1 - Light-duty

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References

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Last update: 09/01/2020