Ford F-350 2017Change

I would like to improve my car in the sense that I would like it to spend less fuel and change the engine.

have owned ford since 1969 and have had the best of luck with them and is a wonder full ride found them to be the most comfortable and is the easiest to maintain and parts from ford are guaranteed for the life of the car

First drove it off the lot last September and have nothing but problems with it.
Pros: Quiet ride, smooth ride, appealing looks, panoramic roof, seat comfort, lots of cab room, great driveablity.

Cons: Infotainment stopped working (replaced unit), loose seat drivers side (repaired), drivers door wouldn't latch twice (repaired I hope) seems to be a cold weather issue, both back door locks failed twice wouldn't lock or unlock, repaired twice, loud bang from rear end upon slowing to stop, seems like another cold weather problem (dealer cannot find issue), leaking transfer case seal, leaking roof through GPS antenna (repaired), tailgate drops while driving (again another cold weather issue), fuel mileage is bad on this truck, my 15 was way better.

Overall a very nice truck, I would buy another given the problems I have had. I must have the dreaded Monday or Friday truck. New model woes, who knows.
Would recommend.