Wanted to try something different and there was a business reason too
To all of the torque comments, I think some are bothered by it more than others. I, for one, never felt that the M3 was deficient in torque for DD duties (especially the DCT which is an improvement on the 6MT due to gearing in my experience). The C63 has gobs of torque which is easy and useful but I never personally felt the M3 was lacking. I love the C63 and I also miss the M3. The C63 is faster, handles very comparably to the M3 and sounds way better but the M3 had a "feel" to it that I miss... I can't describe it better than that. I wish I could have both