Just bought a 1 year old Mk3 focus that I've found has a leak from the top of the windscreen 4 inches to the left of the rear view mirror. Returned it to the main Ford agent where I bought the car from who can't find the leak. It's going in next week for 2 days for a "full water test" although I've got a feeling that they either won't or won't admit to finding anything. Any Focus Mk 3 owners suffered similar and if so was it resolved?
Returned car to the dealer who had the windscreen "re sealed" and when I went to pick it up apologised for not washing it, it wasn't actually too dirty. Anyway a week or so later I put it through the car wash and it now leaked worse than before. Straight back to dealer who booked the car in again and this time replaced the windscreen. Must admit they were very professional and helpfully, so top marks for Bristol St Motors Stafford.