Tag Archives: petroleum-equivalent fuel economy factor

The Environmental Protection Agency’s (EPA) final greenhouse gas and criteria pollutant rules for light-duty vehicles covering model years 2027-2032 is about to be to be announced. It’s part of a tangled maze of regulations from multiple federal and state agencies affecting automakers and ultimately consumers in the US, often referred in shorthand as CAFE – corporate average fuel economy.

In the latest development, The Department of Energy last year proposed decreasing the so-called “petroleum-equivalent fuel economy factor” (PEF) for EVs by 72% in 2027. The Petroleum Equivalency Factor expresses electric vehicle efficiency as equivalent-miles-per-gallon of gasoline for purposes of the EPA’s calculation of manufacturers’ compliance with NHTSA’s CAFE regulations. DOE is responsible for establishing the value of the PEF. With a final rule, issued yesterday,  the PEF will be established for model years beginning in 2027. It slows forcing EV adaption, and in AutoInformed’s view this is a good thing. Continue reading →