I had an issue with my '18 Expedition not shifting correctly into all the gears with 8000 miles on it. Once it would get to 9th and going into 10 it would slam into gear. Sometimes it would bounce from 8 to 6 then up to 10. Eventually it got worse and would slam into 2nd gear and up.

I could be driving in a parking lot and pulling into parking space and it would clunk into gear. I called local dealership and they basically gave me the 'yea I'm sure its nothing' routine... Finally after calling enough times they sent me out to drive with their head transmission guy. Took 2 mins of driving with him for him to say ok take me back to the dealership something is very wrong. Took them 3 weeks to finally replace the snap ring for C Clutch piston that came off.

All while putting me in a ford escape loaner (nothing like going from one of the biggest vehicles ford sells to one of the smallest ). Needless to say I wasn't happy. Even after having that "fixed" I'm starting to have issues again in the mid range of gears. This is my first and will be my last Ford.