Why does my Audi 80's engine make a sputtering noise when accelerating?

I recently noticed that my Audi 80's engine makes a strange sputtering noise when I accelerate. What could be causing this and how can I fix it?

The sputtering noise could be due to a malfunctioning spark plug or ignition coil. I recommend getting these components checked and replaced if necessary.

Another possible cause could be a clogged fuel filter. Try replacing the fuel filter and see if that resolves the issue.

It is also possible that the noise is coming from a loose or worn out belt in the engine. I suggest having a mechanic check and replace any damaged belts.