Why is my Audi A1's engine making a loud knocking noise?

I recently noticed that my Audi A1's engine has been making a loud knocking noise when I accelerate. It doesn't seem to affect the performance of the car, but it is quite concerning. Any advice on what could be causing this and how to fix it?

Hi Jane, it sounds like you may have a problem with your engine's timing belt. This can cause knocking noises when it becomes worn or loose. I would suggest taking your car to a trusted mechanic to have it checked and potentially replaced.