Mercs are mostly slow, boring, slack handling trucks. Well made trucks though with a good design for maintenance unlike BMW's.
The only reason Mercedes have such a great rep. is that the people who buy them are not enthusiasts so they wouldn't know a good handling car unless it ran them over.
I'm not including AMG specials of course, they're aiight.
All Mercedes passenger cars, excepting the A class is RWD.
I personally have had mostly good experience with the 'normal' cooking line of BMW/Mercs but forget all you know about this because 'performance' German cars are different and while people say their 328i is 'tops', that's because it really is an ordinary motor.
Make no mistake, there are plenty of problems that the M-series has that will never come up in the normal BMW's.
The problems in the M3/M5 are quite well documented.
Oh btw. did you know that in Sydney at least, the BMW M3 is a much higher insurance risk than Skylines?
T.