Publicity of the time indicated the "S" in the name stood for "surbaissées" (the cars having an "underslung" chassis.

The factory bodied "CS Type X68" four door sedan/saloon/berline offered seating for 4/5 people and had a separate luggage locker at the back.

"RL" stood for "roue libre", indicating that the otherwise classic 4-speed transmission incorporated a "free-wheel" device.

The "Type X72" used the 2,516 cc 6-cylinder previously reserved for the "CS Spécial", which placed it in the 14CV car tax band.

The main screen was still conventionally flat, but the A-pillars were distinguished by narrow curved glass panels.