E85 vs Gasoline: Fuel Economy, Cost Per Mile & Real Savings
Compare the real-world costs of E85 versus regular gasoline for your vehicle. Learn how to calculate cost per mile and determine if E85 saves you money.
Find E85 flex fuel stations throughout Iowa. Use the interactive map below to locate stations near you.
Excellent E85 coverage! Stations are widely available throughout the state.
Iowa offers flex fuel drivers the most comprehensive E85 infrastructure of any corn belt state, with 305 stations—among the top three nationally. As America's dominant ethanol producer, Iowa provides abundant, affordable E85 virtually everywhere.
Iowa's 42 ethanol plants produce approximately 4.6 billion gallons annually—far exceeding any other state. Iowa converts 62% of its corn crop into ethanol, making the state the nation's first processor of its own corn.
Major producers include POET (12 Iowa plants totaling ~1,190 MGY), Valero (5 plants producing 740 MGY), ADM (3 plants at 777 MGY), and Homeland Energy Solutions in New Hampton (225 MGY).
The Iowa Renewable Fuels Infrastructure Program (RFIP) has invested over $57.7 million in biofuel infrastructure, funding 350 E85 dispensers. Grants cover up to 90% of E85 equipment costs (maximum $75,000). State fleet vehicles must use E85 for at least 60% of fuel purchases.
Major metropolitan areas offer exceptional access: Des Moines (13+ stations), Cedar Rapids (14+), Sioux City, Waterloo/Cedar Falls, and the Quad Cities. Virtually every Iowa county has at least one E85 station. Casey's General Stores is headquartered in Ankeny.
Interstate travelers are well-served: I-80 (east-west) has excellent coverage including the famous Iowa 80 Truckstop, I-35 (north-south) offers strong coverage, and I-29 and I-380 both feature multiple stations.
E85 typically costs $0.50-$1.00+ less per gallon than regular gasoline—among the best discounts nationally due to minimal transportation from plant to pump.
Iowa's E85 ethanol content varies seasonally: 85% in summer, dropping to 70% in winter for reliable cold-weather starting. Casey's became the 5,000th E85 station nationwide in 2020.
Compare the real-world costs of E85 versus regular gasoline for your vehicle. Learn how to calculate cost per mile and determine if E85 saves you money.
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Find E85 stations along your travel route. Perfect for road trips and long-distance travel.
Open Route Planner →View E85 station availability across all 50 states and Washington D.C.
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