 I bought the first car of this new Model in 2005 and it has been hell ever since.  At some point the dealership offered to give me a new car for additional 15k -- I bought the car cash hoping not to worry about buying a car for a long while.  I have the ML320, 99 and it has worked very well for us, so I assumed this would be the same.  To start, when the roads are wet or there is a little wind the car feels like it is being blown off the road and I have had this since day one, initially they told me that it might be the tires, but that wasn't it.  The car has had so many problems that, at one point it spent 36 days at the dealership and they still couldn't figure out what was wrong with it. 