Haha....I don't know diddley about mercedes but were I you I would look into a random orbital sander that uses hook and loop round discs as oipposed to a 1/4 sheet sander.....I have qa dewalt that I like.........

I have a 1/4 sheet sander somewhere?? I can't think of the last time I chose it over the circular one.....In fact I wonder if I even know where it is its been so long since I used it....

Rob M Concord, MA USA