Just from my past experience... every single vehicle I have owned (9 total) and the numerous rentals I have driven (rough estimate 300+) every time ethanol fuel is used, an observable loss of fuel economy has occured. I had to keep records of fuel used as well as mileage during the rentals, and do it regularly with my POVs. Granted I have not driven everything out there, but I deem it safe to say, that....ethanol sucks for fuel economy. Won't go into the rest of why ethanol sucks.
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