Quote Originally Posted by TeKnophile View Post
If that were true I would lose about 1 mpg worst case in my FJ Cruiser vs regular ole gas when in fact I typically lose 4-5 mpg. I know this is a limited sample but I see it to some degree with every vehicle I have ever had.
With an EPA rating of 16/20, your FJ should see a worst case (-4%) impact of 0.64 to 0.8mpg. To lose 5mpg, you would have to be burning nearly pure ethanol.