Try and learn the maintenance history, it will tell alot. If it was neglected as in its current state it would be a cautionary sign. If you view records it may also answer some of your questions as to what's been replaced. A careing previous owner is what I would shop for.

An inspection would a comforting move. It also may help with negotiations.

Hope it works out.

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Delsman
92' 400E, 107k
BMW 535i, 165k