The BMW E60 was the fifth generation of the 5 Series. Its styling (designed by late BMW designer Davide Arcangeli) and many of its advanced features received mixed reviews. It is noted for its non-traditional BMW design. Despite some criticism over its exterior design and interior electronics, this became the best-selling 5 Series.
The E60/61 represented a significant step forward in technology over the previous generation. The controversial iDrive interface featured electronic control over all aspects of the vehicle from the suspension, to brightness of interior lights, to different temperature zones within the cabin. The vehicle was also equipped with an array of safety features from adaptive headlamps to Hill start assist, and was also equipped with a Trailer Stability Program to aid when towing a large trailer or caravan. Other major options included Active Cruise Control and Active Steering. Two new features became available in September 2005, BMW Night Vision and High-Beam Assist.
xDrive Four-wheel drive system on the 5 Series models from 2006-2008 were badged as the 525xi, 528xi, 530xi and 535xi. After 2009 and onwards, they have been badged as the 528i xDrive and 535i xDrive.
Source: Wikipedia, 2012