 The best design in world.
  But flaws.At approx 75 plus MPH a high 
frequency begins until 80. This is not 
acceptable. 
 Leith Inc. of Raleigh NC: greatest 
people to buy from. 11 new Mercedes and 
3 740iL's ,one 745Li a loaned NEW 745i  
Leith went to bat for me with BMW and 
settled to my satisfaction.I have only 
driven the two cars, but I would advise 
testing the car. The problem will 
appear almost immediately. Rriend 
assures his does not have noise.
But if you buy a car, buy it from Leith 
Inc. of Raleigh, NC. They sell 
Mercedes, Audi, BMW.