Hmm. It's off topic but here goes.
Is it in Mercedes best interest to have a bad reputation? I think not.
Just for kicks I did a small search on a mercedes S class of 10 years old. The minimum price (here in Belgium) is around €15.000 (but there were also some from around €30.000).
I recently sold the Nissan Almera of my father which was also around that age and which worked perfectly - €500 was all I could get. thats at 30 times less (in the best case).
A new Nissan of the same class of the Almera (Pulsar or Juke) is around €15.000 and a new S Class is around €85 000 which is 'only' about a factor 6. Even if you pimp up your Merc to the double of the price (which you could easily do) the Merc is still keeping its value much better (relative speaking).