How to fix uneven acceleration in Audi 80?

Recently, my Audi 80 has started to accelerate unevenly. When I press the gas pedal, it hesitates and then suddenly surges forward. What could be causing this issue and how can I fix it?

It's possible that your spark plugs are worn out and need to be replaced. This can cause uneven acceleration and engine misfires. Try replacing them to see if it improves the performance of your car.

Another potential issue could be a clogged fuel filter. Over time, debris and dirt can build up in the filter and restrict the flow of fuel to the engine, causing uneven acceleration. Consider replacing the fuel filter to see if it helps.