Cheers GH77, I can fully understand why you had the same "gearbox disaster" thoughts as me, whatever it was certainly felt mechanical at the time, rather than electrical, as the whole car shuddered when the fault occurred.
It's maybe taught me to be less pessimistic in future when a fault starts to develop, but I'll still continue jumping to conclusions, I need the exercise
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Audi D3 S8 - 2007 - V10. B&O, Phantom Black, black and silver interior, and still completely standard with everything working as it should

SOLD 2023
Audi TT - 2015 - Ultra