What are the most common issues with my Audi A1's turbocharger?

I've been experiencing a lack of power and strange noises coming from my Audi A1's turbocharger. What's causing this and how can I fix it?

It's possible that the turbocharger's wastegate is stuck open, causing the lack of power and strange noises. I recommend taking it to a trusted mechanic for inspection and potentially replacing the wastegate.

Another common issue with Audi A1 turbochargers is a build-up of carbon in the turbine housing, causing restricted airflow. Regularly cleaning the housing can help prevent this problem.

If you're noticing a decrease in performance and an increase in exhaust smoke, it could be a sign of oil leakage in the turbocharger. I suggest having it checked by a professional and replacing any damaged components.