I don't know if this has been discussed before, but it's too short a term to search for. Anyways, does anyone know what the "W" designation for MBZ chassis is? For example, W123, W124, W126, etc. What's the W stand for?

Wagen (Passenger car designation).

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'90 300SE 298k
-300K and it gets put into retirement.
'80 300D 255k Purchased new by family in 1980.

Had a:
1973 220 (gas)
1980 300SD
1992 400E