I agree with Art, make sure the wiring harness, evaporator and head gasket have been addressed. My initial reaction is the price seems at least $1500 high. I see several nice wagons, mainly 94's and 95's, for $4500 in the Midwest. I also know of one 1994 with 108,000 miles that changed hands for $3500. Be patient and negotiate well.

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1994 E420, 1994 E320CE, 1994 E320TE and 1991 300SE