My 56 (Nov 2006) Mk2 Mini Cooper keeps cutting out
At junctions & traffic lights and has recently been serviced and prepped for MOT. No issues from diagnostic testing, garage state nothing wrong and can't understand why it cuts out. It sometimes is okay, but cut out 18 times in a 20 mile journey this evening! It's getting beyond a joke. Just spent Ł200 on it and the problem is still there! Any help, suggestions or advice would be very much appreciated. Thank you-Charliebobba, Waterlooville, Hampshire, UK.