I have a 2015 F150 and it cost me a little over 3,000 to have the right rear quarter panel replaced along with the taillight and bumper.
It was my fault.
Other than that i have had no problems with the paint/body.
I think that the mileage is dependent on the type/quality of gas you have.
Around here when i first got it i got 20.4 miles and now it is a shade over 17.
