Why is my Audi A7 making a high-pitched noise?

After recently purchasing an Audi A7, I noticed that it makes a high-pitched noise whenever I accelerate. It's not overly loud, but definitely noticeable. What could be causing this and how can I fix it?

The most likely cause for this high-pitched noise is a faulty serpentine belt or pulley. I recommend taking your car to a certified Audi mechanic to have it inspected and replaced if necessary.

Another possible cause could be a loose hose or belt in the engine. I suggest checking all the belts and hoses for any signs of wear or looseness and tightening or replacing them as needed.