Why is my Audi 80 engine making a knocking noise while accelerating?

I have noticed a strange knocking noise coming from my Audi 80's engine while I accelerate. It seems to get louder as the RPMs increase. Has anyone else experienced this issue and know what could be causing it?

It is possible that your engine is suffering from spark knock, also known as pre-ignition. This occurs when the air-fuel mixture is ignited too early, causing a knocking or pinging sound. Consider checking your ignition timing and air-fuel ratio.

Another potential cause for engine knocking could be low oil pressure. If your oil level is low or you have dirty oil, it can cause friction between the moving parts of your engine and result in a knocking noise. Check your oil level and consider changing the oil and filter.