Brilliant cars that are totally reliable, they don't really have any common issues, the anti-roll bar links seem to cause some people problems, keep an eye on the back arches and also in the corner of the door mirrors as rust can start here.

Ford's reccomendation for a cambelt change is 100K, but it should in practice be done earlier than this, make sure you get tensioner renewed as well.

The only reason the car locks itself is if you don't get in within 30 seconds of opening.

Never heard of or experienced ECU troubles at all.

Martin