I have a 2012 Mazda3 Skyactiv hatchback. E15 recently became available at QT stations in this area. QT was already my station of choice due to carrying Top Tier fuel at competitive prices. So, I guess I may be taking my chances because my owner's manual states that acceptable fuel not exceed 10% ethanol. My fuel economy has not changed significantly. It reads, on average 0.5mpg higher than E10 87 octane. (not significant) It FEELS more responsive. (anecdotal) It costs 7 cents less per gallon and is rated 88 octane.
So, I'm going to keep using it. There ya go.
So, I'm going to keep using it. There ya go.