E85 is about $8/gallon cheaper than the race gas that it has equal performance to.
Lol. Not a real comparison but I think doing cost comparisons to pump gas is silly. It offers tons more performance for very little extra cost. But if you must compare that, I got about 20MPG on pump. So my mileage is down by about 25%. E85 is still about $0.60-0.80 cheaper than Premium near me so the cost difference is small, but E85 is a bit more per mile.