I'm looking at a 97 E420 which the seller is asing 12K for. Sounds like a great price, what things should I look for before purchasing it? Are there normal faults to look for on the 420?

Thanks,
Brad

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1986 190E 186K (For Sale)
(Maroon, Tan leather)
1996 C280 Sport 208K
(Brilliant Silver, Black Leather)
2002 CLK430 Sport 45K
(Brilliant Silver, Gray Leather , Birdseye Maple)