200 R171 The biggest flaws to be observed ??

Hello together, can you help me there perhaps further, what is to be auchten when buying a 200 R171 from year 2008, when buying this model. Already in advance, it should and will become such a and not bigger, even though certainly the 55 more fun and I also understand the fans of this car. What I would like to know from you, are the corners and corners to be paid attention, as already read, rust on the trunk lid etc (at the year of construction??) What is very susceptible to repairs and d or hides very quickly . Problems with the Variodach e.g. etc. Also good dealers zische Munich and Stuttgart would be a great tip Thanks for your help in advance !! Greeting Doe_J