I have had a 2013 FFE for over two years and I just picked up a 2017 FFE. I quite enjoyed my 2013 FFE over the two years that I had it but I was often frustrated by the range limitations. Here are my impressions of the 2017 model compared to the 2013 model;
Range; I remember one situation where I was particularly frustrated by the range and fast charging on the 2013 model, I had traveled across the Metroplex and had to wait for over two hours to L2 charge siting right beside a CCS charger. One of the first things I did with the 2017 model was to drive over to that CCS charger to test the fast charging system. I charged in less than half an hour and still had 62 miles of range when I got home, HUGE difference.
Seats; I was pleasantly surprised by the differences between the 2013 and 2017 seats. The 2013 has 2-way adjustment head rests that always annoyed me, the 4-way adjustment head rests of the 2017 model are a good improvement. The lumbar lever of the 2013 was always kind of hard to reach, the 2017 has a power lumbar control and the black plastic molding at the bottom of the seats adds aesthetic appeal to the seats.
Sync 3; The graphics are better on the Sync 3 of the 2017 compared to the My Ford Touch Sync of the 2013. Sync 3 seems to have better interaction with phones but I haven't messed with that much. One thing the I liked about 2013 model that's not on the 2017 is composite inputs; even though I never used it, I liked the idea of being able to see video on the gps screen.
Torque Steer; Torque steer on the 2017 doesn't seem near as prevalent as on the 2013. The 2017 has Torque Vectoring Control that the 2013 model doesn't. I can't say for certain but I feel that the Torque Vectoring Control in some way has reduce torque steer in the 2017 model.
In many ways the 2013 and 2017 are almost identical. I did enjoy the 2013 model and in some ways I'm sorry I have to give it up. I hope whoever gets the 2013 model enjoys it as much as I did.