my old man has one. 08 car, 3.2 diesel.
when he got the car he was not happy about how it changed up and down gears. it went back to mercedes upteen times regarding the gearbox issues. replacement this and that and no resolve, they even kept it for a few days etc.
one night after work i was heading round to his, i saw his plate on a cls, so i went to catch up to wave but the cls shot off, but not just driven quickly, it was being driven like a berk in heavy traffic, tailgating badly etc
i end up along side in traffic at the next roundabout, looked over and it wasnt him driving, it was a mercedes employed monkey.
eventually mercedes admitted they could not resolve the problem, all they could say was "you should drive our 09 demonstrator, that ones ten times worse", basically theyre all like that.
more mercedes half baked **** imo