2003 BMW M5 (1998-2003 E39 Generation):
The BMW M5 is a high performance version of the BMW 5-Series executive car built by the Motorsport division of BMW. Beginning production in 1986, the first incarnation of the M5 was hand-built utilizing the 535i chassis and a modified BMW M1 engine, being the fastest production sedan in the world at the time of its introduction.
Subsequent iterations of the M5 have been built from each generation of the 5-Series platform, including the E34, E39, E60/E61, and most recently, F10, with the first orders delivered in late 2011.
The E39 M5 had a significant increase in power and was produced in much greater numbers than the previous generations. Unlike its predecessors, the M5 was produced on the same assembly line as the regular 5-series models at the Dingolfing factory in Germany.
Introduced in 1998 at the Geneva Motor Show, production did not begin until late October of that year. A total of 20,482 E39 M5s were made from 1999 to 2003. BMW M produced three versions of the E39 M5, the European LHD and RHD versions, and the North American specification version.
Source: Wikipedia, 2014