Why does my Audi A7 engine make a strange noise?

I've noticed my Audi A7's engine has been making a strange rattling noise lately. It seems to happen only when the car is idling or at low speeds. What could be causing this and how can I fix it?

Hi Emma, the strange rattling noise could indicate a problem with your engine's timing chain. It's important to have this checked by a mechanic as soon as possible, as a faulty timing chain can cause serious damage to your engine. It's not a difficult fix, but it's best to address it sooner rather than later.