Tom 
2013 BMW 5 Series Sedan 528i 4dr Sedan (2.0L 4cyl Turbo 8A)
Really disappointing experience
 This is my fourth BMW. I had good experience with older BMWs. This car's auto start/stop function is abrupt. The entertainment system is highly unreliable. After a few month's use, the USB port to Ipod failed to function. Then the email to car system failed to receive messages sent to the car. The bluetooth connectivity is problematic. Phone calls will be received but the sound does not go through the speaker system. When you reported that to the dealership, they claim BMW has problem with keeping up the software updates for iPhones. They cannot fix them. The headlight controller unit failed but the dealership failed to fix it during warranty period.  The seat belt's buckle hits the hard plastic of the B beam and creates a rattling noise when driving. It seems that BMW has a hard time get their software working properly in their entertainment system.