91 300E 2.6, 218K, all original. Still runs as good as ever. As a matter of fact I just recently put about $2K rebuilding the top end since I figured I couldn't get a much better, more reliable car for that money, and mechanically I know this one pretty well. I plan to redo the brakes, shocks, exhaust and some other preventive items. I expect to get at least another 8-10 years out of it.
It does blow a puff of smoke when I get on it, rings I'm afraid, so if I'm going to get my expectation, I'll need to drive it easy (a challenge for me) and keep up the oil changes.