Looks like the ride quality has been fixed greatly in the latest C/D review.
Quote:
Comfort mode turns the E63 S into a limousine, with supple air springs and adaptive dampers doing an outstanding job of digesting road imperfections and the nine-speed automatic shifting early to make the most of every last drop of premium gasoline.
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https://www.caranddriver.com/reviews...g-e63-s-drive/