The 1990-93 300D is arguably the best diesel Benz ever made. It combines the refinement and elegance of the W124 chassis with the longevity and charm of the OM602 inline five turbo diesel. Most out there have well over 200k miles and are still going strong. That makes this hardly-used example something quite special. At $12,500, the seller seems to know just how special it is. But I think that’s probably the right ballpark, assuming the car has no outstanding needs.
For comparison, this 1995 W124 diesel with 33k miles just sold on BaT for $22,000!