I know I may sound a bit anal, but I have logged every tank of gas on every vehicle I've owned since 1973. Back then, Ethanol was added in some areas during the winter months to help prevent smog. I could tell when Ethanol had been added, and when it was clear. Every vehicle I have owned has had a 10 to 15% reduction in mileage with a 10% Ethanol blend. I won't use the 15% blend. Cars manufactured before 2008 will be damaged by that blend. I curently own a 2006 Toyota RAV4. I get about 25 mpg in mixed driving and a little more than 31 highway. This is on a constant 10% Ethanol blend which is all we seem to be able to get now. I have 68000 miles on this car, so using 25 mpg as a mileage figure, I ve used approximately 2720 gallons of gas in the 6 years I've owned it. If the gas had not had Ethanol, I would have used approximately 2365 gallons or about 60 gallons less each year. Multiply 60 gallons times the number of cars on the road - a lot of gas that could be saved each year.
Charlie & Mernie Matthews
Liberty Lake, WA
2014 Columbus 365RL Fifth Wheel