Originally Posted by AZfocus2012
Most on here experience an increase in MPG that offsets the added cost of running premium, and in most cases cost less per mile.
I've only noticed this during the hot summer months. I'm running 87 now that it's winter and my gas mileage has only dropped 1mpg at the most. Premium is starting to cost upwards of 40 cents more at most gas stations and I'm starting to think it's not worth it unless it's ethanol-free.
2012 FF Ti HB Kona Blue, DCT, Built 5/24/2011, 401A + Ti Handling Package, Parking Technology Package, Winter Package, Moonroof, and MFT w/NAV at v3.8 129k miles and counting...