Thread: E15 on the way?
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Old 03-01-2012, 05:56 PM   #87 (permalink)
KY_Canyon
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Join Date: Feb 2012
Location: Kentucky (Go Cats!)
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BigBlue - '05 GMC Canyon Crew Cab 4x4 Z71
90 day: 22.39 mpg (US)
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Frequent Questions | Green Vehicle Guide | US EPA

Why is the fuel economy for a flex-fuel vehicle lower when using E85 than when using gasoline?

Ethanol has a lower energy content than gasoline as measured in British Thermal Units per gallon, so you travel fewer miles per gallon when using a fuel that contains ethanol. Compared to gasoline, E85 typically gets about 25-30 percent fewer miles per gallon in ethanol flexible fuel vehicles.
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