Just done 1000 miles in the 140TDI and I'm a little concerned over a slight engine stutter. On a 100 mile motorway trip it will stutter (miss/cough) every 20 minutes or so. It doesn't sound much but you end up just waiting for it to happen so it's very annoying. I've also had this with non motorway driving. I was going to wait until a couple of thousand miles before going back to the dealer but was wondering if anyone else has had a similar experience or happens to know what the problem is.