Since I have had the vehicle I have had to replace the drive shaft 3 times. Porsche replaced it once under warranty and the other two times I had to pay in excess of $900 to have it replaced. I have been told by Porsche that it has a defiective rubber seal and when the seal fails so does he drive shaft. This is a common defect and is know by Porsche at the dealers and the manufacturer. They have acknowledged the defect to me. My concern is if the drive shaft totally fails and breaks, not just flexing and hitting the floor, it could cause an accident by making the vehicle go out of control.

- Allentown , PA, USA

The contact owns a 2005 Porsche Cayenne. The contact was driving 35-40 mph when the vehicle lunged forward while shifting hard. The vehicle was taken to the dealer where the dealer confirmed that the valve body needed to be replaced. The manufacturer was not contacted and the vehicle was not repaired. The failure mileage was 60,000 and the current mileage was 68,000.

- Orange, CT, USA