Purchased my 2015 XLT F 150 on September 30th of 2015. It's the 4x2 SuperCrew with the 5.0L V8 FFV engine and Rated at 15/22 with the combined 18 mpg. It does a little better both ways highway and city. Pulling the 6x12 lawncare trailer with two ZTR mower and all the equipment it's getting 14.6 mpg.
Being 700 lbs lighter and with the additional 20hp over the 2013 making 385hp it has all the pulling power and torque need to about any job you could throw at it.
to be continued.