EPA Approves Higher Ethanol Fuel Blend, But Not All Vehicles Can Use It

The cheaper fuel may not be safe for some cars and trucks, experts warn.

Mar. 31, 2026 at 10:50pm

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The Environmental Protection Agency has approved the widespread sale of a higher ethanol gas blend known as E15 or unleaded 88, which can be 5 to 10 cents cheaper per gallon than regular gasoline. However, the EPA has only approved E15 for vehicles that are 2001 models and newer, and smaller engines like those in motorcycles, boats, and lawn equipment cannot accommodate the higher ethanol concentration.

Why it matters

The EPA's decision to allow E15 fuel is an attempt to lower gas prices, but it may not benefit all consumers. While the higher ethanol blend can be cheaper, it may not be compatible with many vehicles, potentially causing engine damage. There are also concerns that increased corn production for ethanol could lead to higher food prices.

The details

The EPA began issuing short-term waivers to allow the sale of E15 in 2022, and has continued to do so since then. E15 has less gasoline content, which is replaced by corn-based ethanol. This can make it 5 to 10 cents cheaper per gallon than regular unleaded gasoline. However, the EPA has only approved E15 for vehicles that are 2001 models and newer, and smaller engines like those in motorcycles, boats, and lawn equipment cannot accommodate the higher ethanol concentration. There are also concerns that increased corn production for ethanol could lead to higher use of fertilizers, which are a leading source of water pollution.

  • The EPA began issuing short-term waivers to allow the sale of E15 in 2022.
  • The EPA announced last week that it would allow the widespread sale of E15.

The players

Environmental Protection Agency (EPA)

The U.S. federal agency responsible for protecting human health and the environment.

Patrick De Haan

Head of petroleum analysis at GasBuddy.

Kenneth Gillingham

Professor at the Yale School of the Environment who studies the impacts of transportation regulations on prices, emissions, and consumer welfare.

Jason Hill

Professor at the University of Minnesota who studies food, energy markets and environmental consequences.

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What they’re saying

“E15 has less gasoline content, which is replaced by corn-based ethanol. This can make it 5 to 10 cents cheaper per gallon than regular unleaded gasoline.”

— Patrick De Haan, Head of petroleum analysis at GasBuddy

“I think it's difficult to see, when the ledger's settled, how this is a benefit for U.S. consumers.”

— Jason Hill, Professor at the University of Minnesota

What’s next

The EPA will continue to monitor the impact of the E15 fuel blend on vehicle performance and emissions, and may adjust its approval policies in the future based on further research and feedback from consumers and automakers.

The takeaway

The EPA's decision to allow widespread sale of the cheaper E15 fuel blend is a complex issue, with potential benefits in lowering gas prices but also risks of engine damage for many vehicles and potential impacts on food prices due to increased corn production for ethanol. Consumers should carefully check their vehicle's compatibility before opting for the E15 blend.