Oh my friend: you don’t own the car, you rent it. AudiFS owns it.
The lease I’m returning this month was 10 months old when I was rear-ended (driver didn’t stop) and the damage was 78.8% of the car’s value: total is 80%. I called Ford and begged them to get involved and push to total it, they refused. I got auction reports and paid an independent appraiser to build a case for it not because I cared it had been hit, but because I knew (and was right) it would never be right again.
It was in the shop 3 months, the paint doesn’t match, and I had to drive it for 2 more years. When it’s disposed, it will go to auction, and FMC/CAB West will probably take an $8k loss on it. They had a chance to speak up and didn’t.
If your Audi is fixed, you have to drive it another 154 weeks or trade out of it and absorb the negative equity. Be glad you didn’t buy it though: diminished value isn’t your problem.