Why does my Audi 80 have a high-pitched noise when accelerating?

I've noticed that when I accelerate in my Audi 80, there is a high-pitched noise that comes from the engine. It seems to get louder as I go faster. What could be causing this?

It is possible that your timing belt is loose or worn out. This can cause a high-pitched noise when accelerating. It's important to get this checked out by a mechanic as a worn timing belt can cause serious damage to your engine.

Another possibility is that your serpentine belt is loose or worn out. This belt connects and powers various parts of your engine, and a loose or worn one can cause a high-pitched noise. Have a mechanic inspect and replace the belt if necessary.

The high-pitched noise could also be coming from a worn out or faulty alternator. This is responsible for charging your car's battery while driving. If it is not functioning properly, it can cause odd noises and potentially leave you stranded. Have a mechanic check and replace the alternator if needed.