But at the latest when it comes to the sound, BMW fans should be skeptical: instead of the hoarse in-line six-cylinder sound, this E46 produces a bassy, sonorous sound!
V8 instead of six-cylinder in the M3 CSL
On closer inspection, connoisseurs will discover a second, round air intake that was integrated into the front apron by hand: This intake on the passenger side is intended to supply the V8 under the hood with cooling air.
Either way, one thing is clear: The fully roadworthy prototype should be a lot of fun – which Hans Rahn, head of the prototype department at BMW M, confirms. He also goes on to explain the idea behind the test vehicle: “We looked to see if – if you take the CSL idea further – you could add something to it. That was a crazy test!”
The optics are almost standard
Due to the large engine, the curb weight of only 1385 kilos of the standard CSL should have climbed back up a bit, but the extra power should make up for it. Unlike the M5 and Z8, the S62 in this prototype is coupled to the M3 CSL’s SMG II gearbox. Otherwise, the CSL was left as standard.