Why does my Audi 80 make a whistling noise when I accelerate?

I recently noticed a high-pitched whistling noise coming from my car when I step on the gas pedal. It seems to only happen when I am accelerating, and it's starting to worry me. What could be causing this and how can I fix it?

It is possible that this noise is coming from a loose or worn-out belt in your car's engine. This is a common issue in older vehicles and can be solved by simply replacing the belt with a new one. Make sure to have a professional mechanic check it out first to confirm the issue.

Another possible cause for this noise could be a faulty exhaust system. A leak in the exhaust can create a whistling sound, especially when the engine is under load. Have your exhaust system checked and repaired if needed.

If you have recently installed a new air filter, make sure it is the correct size and properly installed. A loose or improperly sized air filter can also create a whistling noise when the car is accelerating.