Why does my Audi A8 engine make a rattling noise?

I've noticed that my Audi A8's engine has been making a rattling noise recently, especially when accelerating. What could be causing this and how can I address it?

The rattling noise could be caused by a few different factors, such as a loose component or a problem with the fuel or ignition system. My advice would be to take your car to a certified Audi technician for a diagnostic test. They'll be able to identify the specific cause and recommend the best solution.