Where monsters sleep… Posted by RawCarCom on 20.04.2013 Posted in: One photo post. Tagged: bmw, coupe, csl, e46, engine, german, leichtbau, m power, m3, power, racing, S54, sport, time attack. The BMW M3 CSL (Coupé Sport Leichtbau) was a limited edition version of the M3, with only 1,400 cars being produced for its 2004 model year run. The CSL was only available in two colours – Silver Grey Metallic and Black Sapphire Metallic.