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Rule

Petroleum-Equivalent Fuel Economy Calculation

Energy Department

Federal Register summary (shortened to 600 characters)

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…

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Document number
2026-03300
Published
Thu, Feb 19, 2026
Comments close
Mon, Mar 23, 2026Closed
Effective
Thu, Feb 19, 2026
First on the line
Oct 10, 2026, 10:00 PM