2018, GT Sport with DCT. At a bit over 18K miles. The car suddenly (like flipping a switch) began running very badly. Limped to a safe area. Had it towed to the dealership. They found cylinder scoring and it needs a new motor, a 6 to 7 month wait! Thinking it's a fluke, I was prepared to wait, but talking to the chief mechanic it seems (according to him) that this is really not all that uncommon for this motor. He claims he's personally seen this 4 times with this motor and pointed to another car waiting for a motor in his lot. I'm appalled. I loved this car, but I've moved on.