Hi did anyone have a definitive solution to this? The stall cut out at roundabouts I was able to solve by disabling the auto stop by leaving the heated screen on. 1.7 diesel cdti. However the cut out at speed is happening to us. As with some others it started post a service and also tied in with an emissions system sensor warning. At times the car will just shut down whilst driving. The sensor can be an issue or thirdly the car would almost be like it was an old style petrol car that was being over choked when starting it. You'd have to switch it off and leave it and then start it a 5 mins later. Any thoughts anyone?