I totally agree a PPI would be necessary, especially on this model! However, this dealership is in my opinion not shady - have been there several times and have a friend that bought a 450SEL from this guy. When someone is selling a car I always assume they are hiding something or just unaware/not as picky as me - that way no surprises when I find something... He deals in cars that are usually on the up and up and usually vintage/unusual Benz cars with TONS of documentation... just my 2 cents check out his other cars and you will see what I am talking about - no affiliation

Mark