Why is my Audi A6 making a high-pitched squealing noise?

I've noticed that my Audi A6 is making a high-pitched squealing noise whenever I accelerate. It seems to be coming from the engine area. What could be causing this and how can I fix it?

It sounds like your serpentine belt may be worn or damaged. It is responsible for powering numerous components in your engine, and a worn belt can cause it to slip, resulting in a high-pitched noise. You should take your car to a mechanic to have the belt inspected and replaced if necessary. Make sure to also check your pulleys and tensioner for any issues.