2014 Titanium Stick Shift Pacific NW
E85 is also high octane, it is slightly diluted with 15% gasoline and registers at 105 octane or more. It is not however the same as E15 (85% gasoline). E85 is not recommended by Kia and those of us under warranty should take that into consideration. Kia did sell a Flex fuel Soul in Brazil that used E85 Flex fuel.
The Kia owners manual says: E85 is not compatible with your vehicle. Use of E85 may result in poor engine performance and damage to your vehicles engine and fuel system.
NOTICE: Your New Vehicle Limited Warranty does not cover damage to the fuel system or any performance problems caused by the use of E85 fuel.