Rear differential and clutch pack failed, and were both replaced under warranty at 7500 miles.
Convertible top started tearing 2 weeks after I purchased it. Top was replaced under warranty at 8200 miles.
Serious front end vibrations above 55mph started the day I drove it home. Tires were balanced and front end aligned by dealer free of charge at 8200 miles.
My color adjustable gauges failed at 8500 miles. Dealer replaced under warranty.
Lots of cheap plastics used to finish out the interior cause buzzing and rattling noises throughout.
This is my 4th new GT Mustang since 1996. I love the new retro styling and overall looks of the car. It has plenty of power and handles amazing, but I don't think I would purchase another mustang after all the problems I have had with this one in such a short amount of time.
I'll agree with the rattles, I'm slowly chasing them down, the most aggravating one was a wiring harness moving around and catching something in the centre stack. My '07 had defective front tires, they got changed out right away. The plastics inside aren't that great looking but all in all, the car seems put together quite well.