Why is my Audi A6 making strange noises while accelerating?

I've noticed that my Audi A6 has been making some strange noises whenever I accelerate. It almost sounds like a high-pitched whirring noise. What could be causing this and what should I do?

It's possible that the noise is coming from a worn out serpentine belt. This is a common issue in Audi A6 models. You should take your car to a mechanic to get it checked and replaced if necessary.

Another potential cause could be a problem with the exhaust system. Make sure to check for any loose or damaged parts and have them repaired if needed.

It's also possible that the noise is coming from a faulty bearing in the transmission. This could be a more serious issue, so it's best to have a professional diagnose and repair it.