I don't know tjts1. I've never really had any issues diagnosing the 210. I've got a 98 210 diesel and a gasser 05 E class wagon. For daily driving I'll take the 210 all day long but the 05 sure is nice on a long trip.
The 210 is easier on tires in my opinion. The most reliable one in the yard is the 95 E300
.