After a year driving a new Plus Four I've finally lost it with the terrible, bad design that allows the doors to shut onto you when parked on a slight slope, or a bit of wind or even movement in the car. I haven't seen the mechanism inside the door but dealer says its a spring ball affair that is supposed to hold the door in position, the spring must not have enough tension. Has anyone found a solution? HELP! Talking to other owners it seems all CX cars suffer. I'm desperate to improve it this having knee trouble myself and worse the wife has grease on her trousers!