My car's taken that stop start technology and decided to use it cutting out on a roundabout . She runs for a short while then cuts out after you give her a couple revs whether it's parked or in moving, seems to be fine sitting with the engine on without revving the accelerator. No idea what the problem is but the guy who pulled it home said it could be the EGR... I'm not brilliant with engine components but surely a blocked EGR would just pump crap into the engine, been meaning to clean and blank it for a while but surely it's something else . It's a 1.9tdi manual 130bhp.
Here's a picture of her crying for mercy on the roundabout