What should I do when my Audi 80's engine makes a knocking noise?

I recently noticed a knocking noise coming from my Audi 80's engine. It seems to be more noticeable when accelerating. What could be causing this and how should I address the issue?

Don't ignore this issue, as it could be a sign of a serious problem with your engine. It's important to have a mechanic check it out as soon as possible to prevent any further damage or costly repairs.

It's possible that the knocking noise is caused by low oil levels or a lack of regular oil changes. Make sure to check your oil levels and schedule regular oil changes to prevent engine issues.

In some cases, the knocking noise may be caused by worn out spark plugs. If you haven't had your spark plugs replaced in a while, it may be time to do so.