Love my 2016 5.0, but it went back to the dealership two weeks ago for its second torque converter issue in 10k miles. Been sitting there for two weeks and they haven't touched it. Last I heard it was on a rollback heading for the dealership in prattville to see if they can fix it. I am about as loyal a Ford guy as they come, but I am so pissed about it I am looking at trading it in on a 2500 AT4 gas burner from the dealer here.

As for the original question, the early ecoboosts had some cam phaser quality control issues. My 2013 with 90K starting rattling every morning when I cranked it up, that was when I traded it in on the 5.0 Also where some issues with condensation in the intercooler, sucking water and causing misfires on hard acceleration. Being direct injection, they may have issues with carbon build up in the back of the intake valves that can lead to trouble.