Flex Fuel Fairness Act of 2025
- Sponsor
- Sen. Klobuchar, Amy [D-MN]
- Committees
- Environment and Public Works Committee (primary)
- Last action
- Jul 15, 2025
Bottom line
The bill aims to incentivize the production and use of flexible fuel vehicles by providing a regulatory credit for their lower lifecycle carbon emissions when operating on E85 fuel.
What it actually does
This bill mandates the Environmental Protection Agency (EPA) to revise existing regulations to allow automobile manufacturers to use a 31% lower gram per mile carbon dioxide (CO2) value for flexible fuel vehicles (FFVs) when calculating fleet average CO2 standards. It also grants the EPA Administrator the authority to apply a larger percentage reduction if supported by future updates to the Argonne National Laboratory's GREET model.
Proponents argue
Proponents argue this bill corrects an imbalance in how FFVs are credited for their environmental benefits, aligning regulatory standards with scientific models like GREET which show significant greenhouse gas reductions from E85 fuel. This incentivizes domestic ethanol production, supports the agricultural sector, and offers consumers more fuel choices that can reduce their carbon footprint.
Opponents contend
Opponents might argue that this credit is an artificial subsidy that could dilute overall CO2 reduction efforts if FFVs are primarily run on gasoline, potentially overstating actual emissions reductions. They may also contend that it favors one fuel type over others without sufficient consideration of broader environmental impacts or the necessary infrastructure development for widespread E85 adoption.
The bill is very short and easy to read, allowing ample time for informed evaluation of its provisions.
Section 4(a)
Mandated CO2 Value Reduction for Flexible Fuel Vehicles
This section requires the Environmental Protection Agency (EPA) to change its regulations within 120 days of the bill's enactment. The change will allow car manufacturers to calculate the fleet average carbon dioxide (CO2) emissions for flexible fuel vehicles (FFVs) using a value that is 31% lower than the CO2 value for an identical vehicle that is not an FFV. This adjustment is specifically for determining compliance with fleet average CO2 standards.
Supporters argue
Supporters argue this provision accurately reflects the lower lifecycle carbon emissions of FFVs when using E85, as validated by the GREET model. This credit encourages manufacturers to produce more FFVs, offering consumers more environmentally friendly options and supporting the domestic ethanol industry.
Critics contend
Critics might contend that a fixed 31% reduction is an arbitrary credit if not all FFVs consistently use E85, potentially overstating actual CO2 reductions. They may argue it could dilute the effectiveness of overall fleet average CO2 standards if manufacturers rely on this credit instead of investing in other emission reduction technologies.
Tradeoffs
The provision balances the desire to incentivize FFV production and E85 use with concerns about accurately measuring real-world emissions reductions and ensuring robust overall CO2 standards.
Section 4(b)
Future Adjustments Based on GREET Model Updates
This section grants the Administrator of the EPA the authority to further increase the percentage reduction in the gram per mile CO2 value for flexible fuel vehicles. This larger reduction can only be applied if the Administrator determines it is appropriate based on a new version of the Greenhouse gases, Regulated Emissions, and Energy use in Technologies (GREET) model developed by Argonne National Laboratory after the bill's enactment.