Sounds like a pain in the ass having to pay out that much so soon after buying the car, but as someone above says, once it’s sorted you should get many years trouble free use out of an Audi.
Had my 51-plate 2.5TDI Allroad for over 10 years now, got over 104,000 on the clock, and probably spent less than £3k on it fixing faults (though it does cost between £300-£1000 per year on servicing/consumables).
I’ve got an 2.5 tdi allroad, looked after it as well, it has done 177k miles.
It was fine until about 150k miles, since then I’ve had to replace front air shock bags, wiper motors, flasher units, front brake calipers…..and then…
Last week the auto box started playing up and an recommended independent specialist wants £3k to sort it out……..Mrs FB none too pleased…..