Hi Guys, thought I would chip in here regarding M3 and C63 as having had an M3 as everyday car for 2 years and now a C63 for the past 2 months I guess I'm in a good position to judge them both. My M3 was a convertable (bought it for the wife) so not exactly fair to compare it to the C63 but here goes anyway.
M3, great engine when thrashed, great handling but a bit wobbly (due to roof), nice noise but can only hear it when the roof is down, uninspiring interior (even in Fox red), poor build quality roof rattled and banged like **** and bits of trim fell off, DCT gearbox fantastic.
C63, what a car! epic! more exciting, better noise all of the time (not just when being thrashed), better interior, bloody fast quicker than M3 (mine has the performance pack so 490bhp), better built, Auto box ok but miss the DCT.
M3 more of a sports car but C63 more thrilling everyday drive. Both look really good in white. The big thing is, both of these cars are better than my Granturismo but neither of them make me feel anywhere near as special and privileged as I do each time I get in the GT. I used to use my GT as my every day transport but now being able to save it for special occasions just increases the appeal. (just my thoughts).
Cheers
Andy