Why is my Audi A5's engine making a loud knocking noise?

I've noticed that my Audi A5's engine has been making an unusual knocking noise recently. What could be causing this and how can I fix it?

It's possible that your engine may be experiencing some knocking due to low oil levels. Try checking your oil levels and topping up if necessary.

Another reason for the knocking noise could be worn out engine bearings. If this is the case, it's best to take your car to a mechanic for further inspection and repairs.