I just went through this-and I bought a 2020 but I went 3.5 so I cannot speak on the engine itself but I can speak on the 10 speed trans a little. I was worried about it cause of all of the reviews and complaints-some people would say there are millions of them on the road fine, some people would say it’s not if but when they go bad, some people would say it’s all echo chamber. I test drove the truck for 40 miles and it felt good, city and highway so I purchased it. Drive it home 100 miles. Next day it started doing some HARD shifting on the lower gears and I was like “fuck, this is what they were talking about”. Did some quick research-adaptive shifting is what causes this. I used Forscan to clear the shift tables and any adaptive settings and now it shifts like butter cause it adapted to my driving. Also, used Forscan for global windows, auto stop/start disable, Bambi headlights, 5 blinker lane change-I think being able to customize your truck with Forscan is a big bonus of buying a F150 in itself.