Hi Gareth, update on the hold assist issue. Took it into Audi dealer yesterday and of course like any intermittent issue it worked perfectly all the way there, when the technician sat with me on a test drive and all the way home. Technician gave a good technical explanation of the hold assist function, which I’m pretty sure was the cause of the issue as it worked fine after I switched it off on the day I experienced the problem. Agreed that if the issue arises again I would take it back in with as much info i can give them eg when it happened, time, how long car had been running etc etc.. They would then probably keep the car for a few days to investigate. Any further developments I’ll let you know.