Why does the Audi A3 produce a high-pitched whistling noise while accelerating?

I recently noticed that my Audi A3 makes a loud and high-pitched whistling noise when I step on the accelerator. It only happens when the car is moving and gets louder as I accelerate. What could be causing this and is it something I should be concerned about?

The high-pitched whistling noise that occurs while accelerating in an Audi A3 is usually caused by a loose or damaged serpentine belt. It's important to have this checked and possibly replaced as soon as possible to avoid further damage to your engine.

Another possible cause for the loud whistling noise is a damaged air intake hose. This can lead to a loss of power and eventually, engine failure. It's best to have a mechanic inspect and possibly replace the air intake hose.