I'm considering purchasing a Q3 2020 model with 50,000 kilometers on it. However, I've heard about some concerns such as a leaking moonroof and start-stop or stalling issues. Can someone who owns a Q3 2020/2021 model confirm if these issues are still present? Also, I'd like to know how reliable the Q3 is with 50,000km or more on it and what your maintenance costs are. Do you think an extended warranty is a must?

Thanks!