The 300CD coupe is celebrated for its pillarless, hardtop-style greenhouse: with all windows down and the sunroof open, owners call it the next best thing to a convertible. The coupe is relatively rare (owners cite roughly 8,000 US sales and ~15,509 total production) and commands a recognized 'two-door tax.'
Pillarless coupe (C123) appeal and the two-door premium
Mercedes-Benz W123 · market