If it were me, I would take it to a reputable dealer for an "Inspection for Purchase". You'll pay a couple of hours in labor but well worth it. Not only will you get a list of anything that is wrong, you've also got a bargaining tool.

Haasman

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'03 E320 Wagon-Sold
'95 E320 Wagon-Went to Ex
'93 190E 2.6-Wrecked
'91 300E-Went to Ex
'65 911 Coupe (#302580)