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119-s-2291119th Congress

Flex Fuel Fairness Act of 2025

Sponsored By: Senator Klobuchar, Amy [D-MN]

Introduced

Summary

Would treat flexible-fuel vehicles as lower-emitting when calculating fleet-average CO2. The bill would let the EPA assign flexible fuel vehicles (FFVs) a gram-per-mile CO2 value 31% lower than the same make and model that is not an FFV, and it ties larger reductions to later updates of the Argonne GREET lifecycle model.

Show full summary
  • Manufacturers: Vehicle makers would get a 31% lower CO2 value for each FFV model versus the non-FFV version when EPA calculates fleet averages. That could ease compliance pressure under fleet CO2 standards.
  • Fleets and drivers: The change could encourage more FFVs and use of ethanol blends by improving how those vehicles count toward fleet targets. The bill cites GREET, which finds E85 from average corn starch ethanol reduces lifecycle greenhouse gas emissions by 37% per mile compared with gasoline with no ethanol.
  • EPA and rulemaking: The bill would direct EPA to revise 40 C.F.R. 86.1818-12 within 120 days to allow the 31% reduction and to permit larger reductions if future GREET analyses support them.

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Bill Overview

Analyzed Economic Effects

1 provisions identified: 1 benefits, 0 costs, 0 mixed.

Lower CO2 score for flexible fuel cars

If enacted, car makers could count a flexible fuel vehicle's CO2 as 31 percent lower than the same make and model that is not flexible fuel. EPA would have to revise its fleet-average CO2 rule within 120 days of enactment to allow this. EPA could allow an even larger reduction if a newer GREET model from Argonne supports it. The bill ties the flexible fuel vehicle and manufacturer definitions to existing federal rules.

Sponsors & CoSponsors

Sponsor

Klobuchar, Amy [D-MN]

MN • D

Cosponsors

  • Sen. Ricketts, Pete [R-NE]

    NE • R

    Sponsored 7/15/2025

Roll Call Votes

No roll call votes available for this bill.

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