Hi all. I have a 2014 Mokka which I mostly love, but I have problems with it cutting out(stalling), then loudly over revving before cutting out again which it can do up to 6 times before finally starting again. This always happens at traffic lights/islands/junctions. I always turn off stop/start function before leaving the house. Diagnostics can't find a fault. Vauxhall want £124 to go on their diagnostic machine. Usually happens every couple of months but this time it's been twice in a week and it's making me not want to use the car for fear of it happening again. I can now tell when it's going to go it as the diesel engine starts to sound like a tractor. Anyone else had this please?