Why is my Audi A6 making a rattling noise when accelerating?

I've recently noticed a rattling noise coming from my Audi A6 when I accelerate. What could be causing this and how can I fix it?

The most common cause of a rattling noise while accelerating is a problem with the exhaust system. Specifically, there may be a loose or damaged exhaust component such as a heat shield or muffler that is causing the noise. It's important to have this looked at and repaired as soon as possible, as a damaged exhaust system can also affect engine performance.