1. Turn signals did not cancel themselves (not connected to the steering column)
2. Steering wheel was progressive (1/2 turn was full turn)
3. Brake pedal had hardly any motion, it was pressure sensitive.
4. Both my two liter CS and my 2.2 liter CX was very hard to start when the engine was still hot.
It was quite a sight to observe people not used to it, trying to maneuver the vehicle.
A pitty that Citroen today looks more like a normal car.