Why does my Audi A8 make a high-pitched squealing noise when I start the engine?

I recently purchased an Audi A8 and noticed that every time I start the engine, there is a loud high-pitched squealing noise. It goes away after a few seconds, but I'm concerned that it might be a sign of a larger issue. Can anyone explain why this happens and if I should be worried? Thank you.

The squealing noise is most likely caused by a loose or worn out drive belt. It could also be due to a faulty tensioner or pulley. I would recommend bringing your car to a mechanic for a thorough inspection and repairs if necessary.