well, I have 2 US 124s and 1 euro, so, the things I see different on the euro are:

1. No airbag
2. different climate controls and console
3. Manual rear windows
4. Slightly different interior trim
5. Five speed manual tranny (although some manual trannies were brought to US shores)
6. No side marker lights inside the US looking housings (mine were added later to certify the car and all exterior lights were "Americanized")
7. No third brake light ("Americanized", I removed it)
8. Ni license filler on the front bumper
9. No mirrors in the sun visors
10. No warning printed on the pass. side outside mirror

A host of other little things which I cannot recall at the moment. Mine has cats as it was apparently fully "federalized" when brought in.

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W108M117(1972) repaired after deer hit
W124M103(1987)
W124M103(1989) -- sold to son's friend
W124M119(1993) --
W124M103(1987 -- 5 speed Euro) - sold to forum member
W124M103(1989) -- TE
W123OM616(1977)
W201M103(1990) parts car