Originally Posted by 46Tbird
I average 17.5 to 19 on any given tank. ... Highway mpg is usually around 23. That's with 3.73s and 28" tall tires.
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Just an update, the new engine is getting 20 city and 27 on the highway. I am averaging 22-23mpg now with no other changes (~18% improvement). I don't understand why it would be any different, but I'm glad to see mileage getting better instead of worse, lol.
This is a 2013 service replacement engine and Ford's latest calibration.