Looks like I'll be buying E10 from now on.

I fill up at a mom & pop station since I get a gas voucher for $25 per week for them and even though they are more expensive they at least carried ethanol free gas. That just changed this week though as they also now contain E10 gas. I'm disappointed since they carry it now and also still have the price premium over other gas stations. Nothing I can do about it though if I want to keep using my gas vouchers. At least I'll be able to tell if the E10 hurts my gas mileage much or not.
 
Yup expect your mileage to go down also check to make sure our engines can run on that E10 fuel as it might cause more harm than good.

It can run E10, I'd imagine any new car is able to. I'd have to imagine the majority of gas stations use e10 now; you may be thinking of E85.
 
DO NOT use 15% ethanol gas. The engine in the cx-5 is not made for this. Will void your warranty for sure and it could cause some real problems.
 
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