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Final Rule

Corporate Average Fuel Economy Standards for Passenger Cars and Light Trucks for Model Years 2027 and Beyond and Fuel Efficiency Standards for Heavy-Duty Pickup Trucks and Vans for Model Years 2030 and Beyond

In Plain English

What is this Federal Register notice?

This is a final rule published in the Federal Register by Transportation Department, National Highway Traffic Safety Administration. Final rules have completed the public comment process and establish legally binding requirements.

Is this rule final?

Yes. This rule has been finalized. It has completed the notice-and-comment process required under the Administrative Procedure Act.

Who does this apply to?

Consult the full text of this document for specific applicability provisions. The affected parties depend on the regulatory scope defined within.

When does it take effect?

This document has been effective since August 23, 2024.

Why it matters: This final rule amends regulations in multiple CFR parts.

📋 Related Rulemaking

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Regulatory History — 2 documents in this rulemaking

  1. Jun 24, 2024 2024-12864 Final Rule
    Corporate Average Fuel Economy Standards for Passenger Cars and Light Trucks ...
  2. Jul 29, 2024 2024-16240 Final Rule
    Corporate Average Fuel Economy Standards for Passenger Cars and Light Trucks ...

Document Details

Document Number2024-12864
TypeFinal Rule
PublishedJun 24, 2024
Effective DateAug 23, 2024
RIN2127-AM55
Docket IDNHTSA-2023-0022
Text FetchedYes

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Related Documents (by RIN/Docket)

Doc #TypeTitlePublished
2024-16240 Final Rule Corporate Average Fuel Economy Standards... Jul 29, 2024

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Full Document Text (282,674 words · ~1414 min read)

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<RULE> DEPARTMENT OF TRANSPORTATION <SUBAGY>National Highway Traffic Safety Administration</SUBAGY> <CFR>49 CFR Parts 523, 531, 533, 535, 536, and 537</CFR> <DEPDOC>[NHTSA-2023-0022]</DEPDOC> <RIN>RIN 2127-AM55</RIN> <SUBJECT>Corporate Average Fuel Economy Standards for Passenger Cars and Light Trucks for Model Years 2027 and Beyond and Fuel Efficiency Standards for Heavy-Duty Pickup Trucks and Vans for Model Years 2030 and Beyond</SUBJECT> <HD SOURCE="HED">AGENCY:</HD> National Highway Traffic Safety Administration (NHTSA). <HD SOURCE="HED">ACTION:</HD> Final rule. <SUM> <HD SOURCE="HED">SUMMARY:</HD> NHTSA, on behalf of the Department of Transportation (DOT), is finalizing Corporate Average Fuel Economy (CAFE) standards for passenger cars and light trucks that increase at a rate of 2 percent per year for passenger cars in model years (MYs) 2027-31, 0 percent per year for light trucks in model years 2027-28, and 2 percent per year for light trucks in model years 2029-31. NHTSA is also finalizing fuel efficiency standards for heavy-duty pickup trucks and vans (HDPUVs) for model years 2030-32 that increase at a rate of 10 percent per year and model years 2033-35 that increase at a rate of 8 percent per year. </SUM> <EFFDATE> <HD SOURCE="HED">DATES:</HD> This rule is effective August 23, 2024. </EFFDATE> <HD SOURCE="HED">ADDRESSES:</HD> For access to the dockets or to read background documents or comments received, please visit <E T="03">https://www.regulations.gov</E> , and/or Docket Management Facility, M-30, U.S. Department of Transportation, West Building, Ground Floor, Rm. W12-140, 1200 New Jersey Avenue SE, Washington, DC 20590. The Docket Management Facility is open between 9 a.m. and 4 p.m. Eastern time, Monday through Friday, except Federal holidays. <FURINF> <HD SOURCE="HED">FOR FURTHER INFORMATION CONTACT:</HD> For technical and policy issues, Joseph Bayer, CAFE Program Division Chief, Office of Rulemaking, National Highway Traffic Safety Administration, 1200 New Jersey Avenue SE, Washington, DC 20590; email: <E T="03">joseph.bayer@dot.gov.</E> For legal issues, Rebecca Schade, NHTSA Office of Chief Counsel, National Highway Traffic Safety Administration, 1200 New Jersey Avenue SE, Washington, DC 20590; email: <E T="03">rebecca.schade@dot.gov.</E> </FURINF> <SUPLINF> <HD SOURCE="HED">SUPPLEMENTARY INFORMATION:</HD> <HD SOURCE="HD1">Table of Acronyms and Abbreviations</HD> <GPOTABLE COLS="2" OPTS="L2,nj,tp0,i1" CDEF="s50,r150"> <TTITLE> </TTITLE> <CHED H="1">Abbreviation</CHED> <CHED H="1">Term</CHED> <ROW> <ENT I="01">AAA</ENT> <ENT>American Automobile Association.</ENT> </ROW> <ROW> <ENT I="01">AALA</ENT> <ENT>American Automotive Labeling Act.</ENT> </ROW> <ROW> <ENT I="01">AAPC</ENT> <ENT>The American Automotive Policy Council.</ENT> </ROW> <ROW> <ENT I="01">ABT</ENT> <ENT>Average, Banking, and Trading.</ENT> </ROW> <ROW> <ENT I="01">AC</ENT> <ENT>Air conditioning.</ENT> </ROW> <ROW> <ENT I="01">ACC</ENT> <ENT>Advanced Clean Cars.</ENT> </ROW> <ROW> <ENT I="01">ACEEE</ENT> <ENT>American Council for an Energy Efficient Economy.</ENT> </ROW> <ROW> <ENT I="01">ACF</ENT> <ENT>Advanced Clean Fleets.</ENT> </ROW> <ROW> <ENT I="01">ACME</ENT> <ENT>Adaptive Cylinder Management Engine.</ENT> </ROW> <ROW> <ENT I="01">ACT</ENT> <ENT>Advanced Clean Trucks.</ENT> </ROW> <ROW> <ENT I="01">ADEAC</ENT> <ENT>advanced cylinder deactivation.</ENT> </ROW> <ROW> <ENT I="01">ADEACD</ENT> <ENT>advanced cylinder deactivation on a dual overhead camshaft engine.</ENT> </ROW> <ROW> <ENT I="01">ADEACS</ENT> <ENT>advanced cylinder deactivation on a single overhead camshaft engine.</ENT> </ROW> <ROW> <ENT I="01">ADSL</ENT> <ENT>Advanced diesel engine.</ENT> </ROW> <ROW> <ENT I="01">AEO</ENT> <ENT>Annual Energy Outlook.</ENT> </ROW> <ROW> <ENT I="01">AER</ENT> <ENT>All-Electric Range.</ENT> </ROW> <ROW> <ENT I="01">AERO</ENT> <ENT>Aerodynamic improvements.</ENT> </ROW> <ROW> <ENT I="01">AFV</ENT> <ENT>Alternative fuel vehicle.</ENT> </ROW> <ROW> <ENT I="01">AHSS</ENT> <ENT>advanced high strength steel.</ENT> </ROW> <ROW> <ENT I="01">AIS</ENT> <ENT>Abbreviated Injury Scale.</ENT> </ROW> <ROW> <ENT I="01">AMPC</ENT> <ENT>Advanced Manufacturing Production Tax Credit.</ENT> </ROW> <ROW> <ENT I="01">AMTL</ENT> <ENT>Advanced Mobility Technology Laboratory.</ENT> </ROW> <ROW> <ENT I="01">ANL</ENT> <ENT>Argonne National Laboratory.</ENT> </ROW> <ROW> <ENT I="01">ANSI</ENT> <ENT>American National Standards Institute.</ENT> </ROW> <ROW> <ENT I="01">APA</ENT> <ENT>Administrative Procedure Act.</ENT> </ROW> <ROW> <ENT I="01">AT</ENT> <ENT>traditional automatic transmissions.</ENT> </ROW> <ROW> <ENT I="01">AVE</ENT> <ENT>Alliance for Vehicle Efficiency.</ENT> </ROW> <ROW> <ENT I="01">AWD</ENT> <ENT>All-Wheel Drive.</ENT> </ROW> <ROW> <ENT I="01">BEA</ENT> <ENT>Bureau of Economic Analysis.</ENT> </ROW> <ROW> <ENT I="01">BEV</ENT> <ENT>Battery electric vehicle.</ENT> </ROW> <ROW> <ENT I="01">BGEPA</ENT> <ENT>Bald and Golden Eagle Protection Act.</ENT> </ROW> <ROW> <ENT I="01">BIL</ENT> <ENT>Bipartisan Infrastructure Law.</ENT> </ROW> <ROW> <ENT I="01">BISG</ENT> <ENT>Belt Mounted integrated starter/generator.</ENT> </ROW> <ROW> <ENT I="01">BMEP</ENT> <ENT>Brake Mean Effective Pressure.</ENT> </ROW> <ROW> <ENT I="01">BNEF</ENT> <ENT>Bloomberg New Energy Finance.</ENT> </ROW> <ROW> <ENT I="01">BPT</ENT> <ENT>Benefit-Per-Ton.</ENT> </ROW> <ROW> <ENT I="01">BSFC</ENT> <ENT>Brake-Specific Fuel Consumption.</ENT> </ROW> <ROW> <ENT I="01">BTW</ENT> <ENT>Brake and Tire Wear.</ENT> </ROW> <ROW> <ENT I="01">CAA</ENT> <ENT>Clean Air Act.</ENT> </ROW> <ROW> <ENT I="01">CAFE</ENT> <ENT>Corporate Average Fuel Economy.</ENT> </ROW> <ROW> <ENT I="01">CARB</ENT> <ENT>California Air Resources Board.</ENT> </ROW> <ROW> <ENT I="01">CBD</ENT> <ENT>Center for Biological Diversity.</ENT> </ROW> <ROW> <ENT I="01">CBI</ENT> <ENT>Confidential Business Information.</ENT> </ROW> <ROW> <ENT I="01">CEA</ENT> <ENT>Center for Environmental Accountability.</ENT> </ROW> <ROW> <ENT I="01">CEGR</ENT> <ENT>Cooled Exhaust Gas Recirculation.</ENT> </ROW> <ROW> <ENT I="01">CEQ</ENT> <ENT>Council on Environmental Quality.</ENT> </ROW> <ROW> <ENT I="01">CFR</ENT> <ENT>Code of Federal Regulations.</ENT> </ROW> <ROW> <ENT I="01">CH4</ENT> <ENT>Methane.</ENT> </ROW> <ROW> <ENT I="01">CI</ENT> <ENT>Compression Ignition.</ENT> </ROW> <ROW> <ENT I="01">CNG</ENT> <ENT>Compressed Natural Gas.</ENT> </ROW> <ROW> <ENT I="01">CO</ENT> <ENT>Carbon Monoxide.</ENT> </ROW> <ROW> <ENT I="01">CO2</ENT> <ENT>Carbon Dioxide.</ENT> </ROW> <ROW> <ENT I="01">COVID</ENT> <ENT>Coronavirus disease of 2019.</ENT> </ROW> <ROW> <ENT I="01">CPM</ENT> <ENT>Cost Per Mile.</ENT> </ROW> <ROW> <ENT I="01">CR</ENT> <ENT>Compression Ratio.</ENT> </ROW> <ROW> <ENT I="01">CRSS</ENT> <ENT>Crash Report Sampling System.</ENT> </ROW> <ROW> <ENT I="01">CUV</ENT> <ENT>Crossover Utility Vehicle.</ENT> </ROW> <ROW> <ENT I="01">CVC</ENT> <ENT>Clean Vehicle Credit.</ENT> </ROW> <ROW> <ENT I="01">CVT</ENT> <ENT>Continuously Variable Transmissions.</ENT> </ROW> <ROW> <ENT I="01">CY</ENT> <ENT>Calendar year.</ENT> </ROW> <ROW> <ENT I="01">CZMA</ENT> <ENT>Coastal Zone Management Act.</ENT> </ROW> <ROW> <ENT I="01">DCT</ENT> <ENT>Dual Clutch Transmissions.</ENT> </ROW> <ROW> <ENT I="01">DD</ENT> <ENT>Direct Drive.</ENT> </ROW> <ROW> <ENT I="01">DEAC</ENT> <ENT>Cylinder Deactivation.</ENT> </ROW> <ROW> <ENT I="01">DEIS</ENT> <ENT>Draft Environmental Impact Statement.</ENT> </ROW> <ROW> <ENT I="01">DFS</ENT> <ENT>Dynamic Fleet Share.</ENT> </ROW> <ROW> <ENT I="01">DMC</ENT> <ENT>Direct Manufacturing Cost.</ENT> </ROW> <ROW> <ENT I="01">DOE</ENT> <ENT>Department of Energy.</ENT> </ROW> <ROW> <ENT I="01">DOHC</ENT> <ENT>Dual Overhead Camshaft.</ENT> </ROW> <ROW> <ENT I="01">DOI</ENT> <ENT>Department of the Interior.</ENT> </ROW> <ROW> <ENT I="01">DOT</ENT> <ENT>Department of Transportation.</ENT> </ROW> <ROW> <ENT I="01">DPM</ENT> <ENT>Diesel Particulate Matter.</ENT> </ROW> <ROW> <ENT I="01">DR</ENT> <ENT>Discount Rate.</ENT> </ROW> <ROW> <ENT I="01">DSLI</ENT> <ENT>Advanced diesel engine with improvements.</ENT> </ROW> <ROW> <ENT I="01">DSLIAD</ENT> <ENT>Advanced diesel engine with improvements and advanced cylinder deactivation.</ENT> </ROW> <ROW> <ENT I="01">E.O.</ENT> <ENT>Executive Order.</ENT> </ROW> <ROW> <ENT I="01">EFR</ENT> <ENT>Engine Friction Reduction.</ENT> </ROW> <ROW> <ENT I="01">EIA</ENT> <ENT>U.S. Energy Information Administration.</ENT> </ROW> <ROW> <ENT I="01">EIS</ENT> <ENT>Environmental Impact Statement.</ENT> </ROW> <ROW> <ENT I="01">EISA</ENT> <ENT>Energy Independence and Security Act.</ENT> </ROW> <ROW> <ENT I="01">EJ</ENT> <ENT>Environmental Justice.</ENT> </ROW> <ROW> <ENT I="01">EPA</ENT> <ENT>U.S. Environmental Protection Agency.</ENT> </ROW> <ROW> <ENT I="01">EPCA</ENT> <ENT>Energy Policy and Conservation Act.</ENT> </ROW> <ROW> <ENT I="01">EPS</ENT> <ENT>Electric Power Steering.</ENT> </ROW> <ROW> <ENT I="01">ERF</ENT> <ENT>effective radiative forcing.</ENT> </ROW> <ROW> <ENT I="01">ESA</ENT> <ENT>Endangered Species Act.</ENT> </ROW> <ROW> <ENT I="01">ESS</ENT> <ENT>Energy Storage System.</ENT> </ROW> <ROW> <ENT I="01">ETDS</ENT> <ENT>Electric Traction Drive System.</ENT> </ROW> <ROW> <ENT I="01">EV</ENT> <ENT>Electric Vehicle.</ENT> </ROW> <ROW> <ENT I="01">FCC</ENT> <ENT>Fuel Consumption Credits.</ENT> </ROW> <ROW> <ENT I="01">FCEV</ENT> <ENT>Fuel Cell Electric Vehicle.</ENT> </ROW> <ROW> <ENT I="01">FCIV</ENT> <ENT>Fuel Consumption Improvement Value.</ENT> </ROW> <ROW ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ Preview 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