Well ride quality is subjective, I think my W126 rides hard but it handles well for it's size. It will definitly ride harder than an American/Japanese luxury car.

They imported 2,400 give or take 350SD's I don't know how many 300SE's came to this country but if I had to guess under 5k.

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2006 CL500
1969 280SE
2023 Ram 1500
2026 Genesis GV70
2007 Tiara 3200