I recently went from 14 S4 to 21 Q7. It's had its share of issues. The main thing to worry about on 2020-22 is the 48v hybrid system can go bad. I'm not exactly sure what the issue is, but some systems stop working (for me it was the auto start-stop) and then other things will go and you'll eventually get stranded. It was fixed under warranty for us, but it's costly if not covered. I think there's a bulletin somewhere and that's covered for 7 years now. Otherwise it's a decent car depending on pricing these days.