because the latest passat wheels look the biz and whenever you see vw wheels etc for sale they are always half the price of mercedes wheels that is on ebay in other words people take the ....
i think thave the same pcd/stud pattern so it will come down to the size of the big hole in the middle (sure there's a technical name for that ) and offsets
I have actually seen after market alloys wheels advertised to fit straight on to Merc/VW/Audi/Skoda as they do all share the same PCD/stud pattern as others have already said...
Personally, I would stick to MB design alloys OEM or Replicas...