Since I bought it, the tire sensors, Nav system, sunroof, USB, door, power seat, transmission and brakes have all failed. I have 5500 miles on. I have lost it for service 32 days and 3 mornings. Ford has been a nightmare to deal with. Stories, lies, refusal to fix/replace systems etc. I finally had a meeting with cust serv, which was a choreographed show and waste of time. They can't fix everything and won't take it back.
GPS/Sync system, when it's working
Just about everything, I guess. Also, the headlamps are not bright enough and the brakes are weak.