Both electric window motors have needed replacing.
New starter motor at 48000 miles.
New windscreen wiper motor at 50000 miles.
Doors lock and unlock themselves while driving along.
Overall, the car has been very reliable.
The engine performance is impressive - even at 133000 miles it does not require oil top ups between servicing.
Having said this, the electrical problems have let the car down badly.
With regard to your comment about the central locking locking and unlocking itself, I had a similar problem with a 405 I owned and it turned out to be that the connection for the central locking was located in the glove compartment and it must have worked loose with the things in there banging against it. I just pushed it back in and it's been OK since.
I have similar problems with the central locking. Some of the wires going from the body to the driver's door are severed - pull back the rubber sleeving and have a look.
I have just acquired a 306 xrdt. The car drives superb even at 148000 miles the only thing worries me is the front drop links that need replacing quite often.