# Petroleum-Equivalent Fuel Economy Calculation
> **US Department of Energy** · Final rule. · Published 2024-03-29 · Effective 2024-06-12 · 89 FR 22041
## Document
- **Document number:** 2024-06101
- **Category:** other
- **Sub-agency:** US Department of Energy
- **Federal Register citation:** 89 FR 22041
- **CFR reference:** 10 CFR 474
- **Publication date:** 2024-03-29
- **Effective date:** 2024-06-12
- **Energy docket:** EERE-2021-VT-0033
## Abstract

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.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2024/03/29/2024-06101/petroleum-equivalent-fuel-economy-calculation)
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