 This car has had too many problems and 
BMW service have not done a good job at 
addressing them.  I am tired of 
hearing that they cannot duplicate the 
problem. At about 4K miles the rear 
differential had to be replaced (with a 
rebuilt one). Car stalls at idle.  One 
dealer replaced the ignition coil as a 
fix, but problem occurred within 30 
minutes after the fix. Another dealers 
claimed that there was no problem, but 
finally admitted that it was an engine 
software problem for which a fix does 
not yet exisit. Shifting into 1st gear 
is hard at times. Speakers rattle. 
There is excess wind noise at hwy 
speeds. window regulator had to be 
replaced. A disappointment.