Hey Trevor,
Thanks for the welcome, and the pointers. Actually, I do have the original Audi phone in the car ... but it does not have a sim so presume it won't be able to track movements. The garage in question has had a change of mechanics recently, and my favourite go-to mechanic left to set up on his own. Sad loss!! It's frustrating when you get a mechanic who you can trust move away from the local garage. He set up miles away so not really an option to continue using his services.
Have a great New Year, actually ... New Decade!!
Cheers,
John.