Originally Posted by PeterRus
The only exterior difference that i know of are the new rear lights (they have new style "spirals" inside - especially noticeable when lights are switched on). There are also a few minor changes inside like new door handles - you won't actually notice them unless you've driven (ot at least sat in) both versions of the car.
Other than that, the ordinary 5-series has got a new transmission and front bumper, but these are unchanged on the M5...
I want your car...now. Just sat in a demo S5 (meteor gray with red/CF interior
). Nice car, but was kinda not used to the stick; couldn't locate 2nd and 4th very well.
Anyways, back to the topic, the only differences include headlights (clear bulbs, LED gold "eye brow"), taillights (rising sun-styled LED bars), and different interior. Other than that it's more of the same goodness.