Disappointed 
2009 BMW 5 Series Sedan 535i 4dr Sedan (3.0L 6cyl Turbo 6M)
Fuel System 
 Great car, but the problems with the fuel system are ridiculous.  4th time it has been in, reprogrammed software, new software, new fuel pump.   This is a serious safety issue as the car will not get fuel and will stop or lose acceleration.  BMW needs to take this seriously.