WTO notification · TBT
United StatesAdopted, according to its latest notice
Official title
Petroleum-Equivalent Fuel Economy Calculation
The United States issued an addendum on 20 February 2026 to the earlier TBT notification G/TBT/N/USA/1983. Addenda often report that a measure was adopted, changed, postponed or withdrawn. The measure was first notified on 13 April 2023. The comment period closed on 23 March 2026.
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Petroleum-equivalent fuel economy of electric vehicles; Product and company certification. Conformity assessment; Environmental protection; Electric road vehicles; Fuels
Latest notice (G/TBT/N/USA/1983/Add.4, 20 February 2026)
The latest notice says the measure was adopted or published.
Petroleum-Equivalent Fuel Economy Calculation
The Office of Critical Minerals and Energy Innovation (formerly the Office of Energy Efficiency and Renewable Energy) of the Department of Energy (DOE) has reviewed the petroleum-equivalency factor (PEF) for electric vehicles (EVs) used by the Environmental Protection Agency (EPA) in calculating light-duty vehicle manufacturers' compliance with the Department of Transportation's (DOT) Corporate Average Fuel Economy (CAFE) standards. DOE has determined that revisions to the PEF are necessary. DOE is first publishing a final rule that removes the fuel content factor (FCF) from the calculation of the PEF. Removal of the FCF is consistent with a United States Court of Appeals for the Eighth Circuit decision that held, among other things, that the inclusion of the FCF in the PEF calculation exceeded DOE's authority under the substantive statute. DOE will propose additional revisions to the PEF in a forthcoming notice of proposed rulemaking. The effective date of this interim final rule is 19 February 2026. DOE will accept comments, data, and information regarding this interim final rule no later than 23 March 2026. 91 Federal Register (FR) 7810, 19 February 2026; Title 10 Code of Federal Regulations (CFR) Part 474: This interim final rule; request for comments and the technical amendment notified as G/TBT/N/USA/1983/Add.3 are identified by Docket Number EERE-2025-VT-0073. The Docket Folder is available from Regulations.gov at and provides access to primary documents, supporting…
Notice of proposed rulemaking; request for comment - The U.S. Department of Energy ('DOE') proposes to revise its regulations regarding procedures for calculating a value for the petroleum-equivalent fuel economy of electric vehicles (or 'EVs') for use in the Corporate Average Fuel Economy (CAFE) program administered by the U.S. Department of Transportation (DOT). This Notice of proposed rulemaking ('NOPR') also grants a petition for rulemaking submitted by the Natural Resources Defense Council (NRDC) and Sierra Club and responds to comments submitted on that petition (identified by Docket Number EERE-2021-VT-0033).
Every notice about this measure published here, newest first. Each one is the notifying member's own text.
AddendumG/TBT/N/USA/1983/Add.4
Comment deadline: Closed on 23 March 2026
Petroleum-Equivalent Fuel Economy Calculation
The Office of Critical Minerals and Energy Innovation (formerly the Office of Energy Efficiency and Renewable Energy) of the Department of Energy (DOE) has reviewed the petroleum-equivalency factor (PEF) for electric vehicles (EVs) used by the Environmental Protection Agency (EPA) in calculating light-duty vehicle manufacturers' compliance with the Department of Transportation's (DOT) Corporate Average Fuel Economy (CAFE) standards. DOE has determined that revisions to the PEF are necessary. DOE is first publishing a final rule that removes the fuel content factor (FCF) from the calculation of the PEF. Removal of the FCF is consistent with a United States Court of Appeals for the Eighth Circuit decision that held, among other things, that the inclusion of the FCF in the PEF calculation exceeded DOE's authority under the substantive statute. DOE will propose additional revisions to the PEF in a forthcoming notice of proposed rulemaking. The effective date of this interim final rule is 19 February 2026. DOE will accept comments, data, and information regarding this interim final rule no later than 23 March 2026. 91 Federal Register (FR) 7810, 19 February 2026; Title 10 Code of Federal Regulations (CFR) Part 474: This interim final rule; request for comments and the technical amendment notified as G/TBT/N/USA/1983/Add.3 are identified by Docket Number EERE-2025-VT-0073. The Docket Folder is available from Regulations.gov at and provides access to primary documents, supporting…
AddendumG/TBT/N/USA/1983/Add.3
Petroleum-Equivalent Fuel Economy Calculation
The U.S. Department of Energy (DOE) is amending its regulations in compliance with a United States Court of Appeals for the Eighth Circuit court decision vacating the 29 March 2024 rule (notified as G/TBT/N/USA/1983/Add.2) revising procedures for calculating a value for the petroleum-equivalent fuel economy of electric vehicles (EVs) used by the Environmental Protection Agency (EPA) in calculating light-duty vehicle manufacturers' compliance with the Department of Transportation's (DOT) Corporate Average Fuel Economy (CAFE) standards. This action is effective on 8 January 2026. However, the opinion had legal effect on 5 September 2025. 91 Federal Register (FR) 553, 8 January 2026; Title 10 Code of Federal Regulations (CFR) Part 474: This technical amendment is identified by Docket Number EERE-2025-VT-0073. The Docket Folder is available from Regulations.gov at Previous actions notified under the symbol G/TBT/N/USA/1983 are identified by Docket Number EERE-2021-VT-0033. The Docket Folder is available from Regulations.gov at and provides access to primary documents as well as comments received. Documents are also accessible from Regulations.gov by searching the Docket Number.
AddendumG/TBT/N/USA/1983/Add.2
Petroleum-Equivalent Fuel Economy Calculation
The U.S. Department of Energy (DOE) publishes a final rule that revises the value for the petroleum-equivalency factor (PEF). This final rule revises DOE's regulations regarding procedures for calculating a value for the petroleum-equivalent fuel economy of electric vehicles (EVs). The PEF is used by the Environmental Protection Agency (EPA) in calculating light-duty vehicle manufacturers' compliance with the Department of Transportation's (DOT) Corporate Average Fuel Economy (CAFE) standards. This rule is effective 12 June 2024. Title 10 Code of Federal Regulations (CFR) Part 474 This final rule and previous actions notified under the symbol G/TBT/N/USA/1983 are identified by Docket Number EERE-2021-VT-0033. The Docket Folder is available on Regulations.gov at and provides access to primary and supporting documents as well as comments received. Documents are also accessible from Regulations.gov by searching the Docket Number.
AddendumG/TBT/N/USA/1983/Add.1
Comment deadline: Closed on 17 October 2023
Petroleum-Equivalent Fuel Economy Calculation
On 11 April 2023, the U.S. Department of Energy (DOE) published a notice of proposed rulemaking (NOPR), in which DOE proposed regulations regarding procedures for calculating a value for the petroleum equivalent fuel economy of electric vehicles (EVs) for use in the Corporate Average Fuel Economy (CAFE) program administered by the Department of Transportation (DOT). In their comments to DOE's NOPR, the Alliance for Automotive Innovation (Auto Innovators) raised the issue of the ability of manufacturers to comply with the proposed PEF in 2027 due to vehicle design cycles. DOE is providing notice that it sent follow-up letters to member companies of the Auto Innovators inviting the companies to provide information to clarify the challenges to implementing the revised standard to apply to model year (MY) 2027- 2031 vehicles as proposed. In this notice and request for comment, DOE requests additional comment on the questions posed to the Auto Innovator members providing a similar opportunity to all stakeholders. The comment period for the NOPR that published on 11 April 2023, closed on 12 June 2023 (88 FR 21525). DOE will accept comments responding to this document on or before 17 October 2023. This notification of ex parte communication; request for comments and the notice of proposed rulemaking notified as G/TBT/N/USA/1983 are identified by Docket Number EERE-2021-VT-0033. The Docket Folder is available from Regulations.gov at and provides access to primary and supporting…
Regular notificationG/TBT/N/USA/1983
Comment deadline: Closed on 12 June 2023
Petroleum-Equivalent Fuel Economy Calculation
Notice of proposed rulemaking; request for comment - The U.S. Department of Energy ('DOE') proposes to revise its regulations regarding procedures for calculating a value for the petroleum-equivalent fuel economy of electric vehicles (or 'EVs') for use in the Corporate Average Fuel Economy (CAFE) program administered by the U.S. Department of Transportation (DOT). This Notice of proposed rulemaking ('NOPR') also grants a petition for rulemaking submitted by the Natural Resources Defense Council (NRDC) and Sierra Club and responds to comments submitted on that petition (identified by Docket Number EERE-2021-VT-0033).
Expodite writes its summary from the official record. The notification and the documents it notifies are on the WTO's own websites.
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