Why does my Audi A5 make a whistling noise when I accelerate?

I recently purchased a pre-owned 2018 Audi A5 and have noticed a high-pitched whistling noise when I accelerate. It doesn't happen all the time, but it's definitely noticeable when it does. I'm wondering if this is a common issue with Audi A5s and if there's a way to fix it.

The whistling noise could be coming from a loose or damaged turbocharger pipe. It's important to have this checked by a mechanic as a damaged pipe can lead to decreased engine performance and potentially damage other components.

This issue is common with Audi A5s and is often caused by a faulty valve cover or oil filter housing gasket. I recommend taking your car to a certified mechanic for a proper diagnosis and repair.

Make sure to also check the air intake and vacuum lines for any leaks or damage. Even a small tear or hole can cause a whistling noise, and it's an easy fix that you can do yourself if you're comfortable working on cars.