Original purchaser, just over 5 years with not quite 60k km's/37k mi on it, all easy miles.
All maintenance done by Audi per recommended schedule.
Great car to drive, but expensive to maintain once OoW.
Low oil pressure light/check engine light 1 month out of warranty.
Known issue with oil starvation due to sludge requires a complete engine replacement - $12k.
Dealer went to bat for me and Audi's covering a portion, but even so, it's more than I spent on my last 2 Ford's with twice the mileage.
Clicking noises come from dash when cold due to known issues with actuators.
Audi won't cover even though reported under warranty.
Even basic service is 2X my Ford/Honda.
Performance, ride, handling, audio system.
Reliability, reliability, reliability.
Cabin ergonomics also need some work, e.g.; console has to be raised to apply parking brake, dash clock only in 24 hour format.