The Flex Fuel Fairness Act of 2025 would require the Environmental Protection Agency to adjust how it calculates carbon dioxide emissions for vehicles that can run on E85 fuel (a blend of 85% ethanol and 15% gasoline). Specifically, manufacturers could count these flex fuel vehicles as producing 31% lower emissions than comparable regular gasoline vehicles when determining whether they meet federal fleet average emissions standards, reflecting research showing that E85 fuel reduces greenhouse gas emissions by 37% compared to pure gasoline. The EPA would have 120 days after the bill's enactment to make this regulatory change, and could increase the emissions reduction percentage further if newer scientific data warrants it. This legislation would primarily affect automakers and their compliance with federal environmental regulations, potentially making it easier for them to meet emissions standards by producing or selling more flex fuel vehicles. The bill includes no direct federal funding requirements, as it simply directs EPA to revise its existing regulations.
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