I rode in a Honda with 144K miles yesterday after my 95 E320 w/123K miles overheated... Honda felt like **** on the highway, vibrating (not sure if they normally vibrate like that at that mileage or this one needed some type of engine mount repair or alignment/balancing)...
Anyway, I asked the owner about major repairs the last 40K miles or so... they said, none really... wait, wait, they did remember a repair about 20K miles ago.... $600!! for a water pump, timing chain and hoses at the dealer! .... no other problems? hmmm, they said, "well brakes"...
So bottom line, is as we all know honda's/toyota, etc are much more reliable than an MB, no matter how much better the MB is finished, rides, feels, handles, etc.. sad fact of life...