My wife and I bought a brand new 2015 Ford Focus Titanium with that DCT for her 1K miles per week driving to her job. 90% of her driving was highway driving. But still, the clutches on the thing chattered horribly starting a 40K miles. Then later, it seemed like it would miss gears on an upshift and end up in neutral. The car wouldn't over rev, but it just stalled out as if the throttle had closed. Clutch chatter is annoying as heck, but that "stalling" situation was dangerous!
We sold it at 3 years old and 70k miles, 2 years earlier than we had planned. Too bad for the car. With the exception of that transmission there was nothing at all wrong with that car. We liked it and it was perfect for our needs, except for that [censored] transmission.