Well the M119 you traded in was just about unkillable.

M119 vs OM606 hmm. Well they both will run until the car falls apart, they both sound sweet. The M119 burns a bit more fuel, and has a lot more power. But the 606 certainly has its own charm.

What did the E420 average? About 20mpg-22mpg? An E300D should get 30mpg-33mpg on the highway.

When you figure in that the car itself, and the transmission are the same; the maintaince costs for the car itself are a wash.

I wouldn't buy a 200k mile W210 unless it was cheap, it's going to need a $3k 722.6 soon and probably another $3k in the front end.

If I were W210 shopping today I'd look at E320's, 2000 and newer. Fuel consumption is a wash, and you can get a much newer lower mileage example with the gas engine. Unless of course you just want a diesel, dollars and cents wise its a wash.

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2006 CL500
2009 C300 4matic
1969 280SE
2023 Ram 1500
2007 Tiara 3200