Anyone know off-hand what the differences are? Can't seem to find out what they are, still looking at making my own 250D W124. Does anyone have a Service Data Book to explain? Thanks!

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1987 190D 2.5 NA 1986 300E 5speed. ⬅️Stolen!

It looks like they were produced at the same time for the same models, so the difference may have been associated with a factory option (auto/manual, or something else). Or one was made for the w124 and the other for the w201. Probably something very minor I would guess.

I have the w124 service manual, but it doesn't include the 250D unfortunately. I guess because it wasn't a US model.

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1991 300 D 2.5 Turbo, 220k
also in the family:
1981 240 D 185k
1991 350 SD 185k
2006 S 500
2005 SLK 350

Differences is only between chassis (124 and 201):
.911 - 190 D 2.5
.912 - 250 D

Also engines may have differences between different model years.

There's a oft discussed difference in the turbo waste gate between the W201 and W124 2.5's.

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You can't always get what you want, but if you try sometime you just might find you get what you need.

The 602.91X is natural aspirated. Without turbo...