This is my second 5 series, the previous was a 540. The vehicle is pure pleasure to drive, acceleration, braking and handling are awesome! That said, it is the poorest quality vehicle I have ever had. 5 visits in 5 weeks in the shop for failing iDrive. I blame BMW service more than the vehicle, they would not replace the failing unit and kept reprogramming the computer. The iDrive itself is tedious and cumbersome, the nav system is worthless 50% of the time. I cannot count how many rattles and noises the vehicle possesses. Sunroof replaced, window gaskets squeaking, etc etc etc. BMW, the drivers machine - when you get to drive it!
Acceleration, triptonic shifter, throwing the vehicle around.
Free service for 4 years is a great concept, if 1) the vehicle rarely needs it; and 2) the service center comleted the work the first time; and 3) they did not cheap out like not turning or replacing rotors on a brake job.