What is the cause of engine misfire in an Audi 80?

I have an Audi 80 with an engine that is misfiring. The check engine light is on and the car shakes at idle. What could be causing this issue?

It could be a problem with the spark plugs or ignition coils. These are common causes of engine misfire in Audis.

Check the fuel injectors to make sure they are clean and functioning properly. Dirty or faulty injectors can also cause engine misfire in cars.

Another potential issue could be a vacuum leak. When there is a leak in the vacuum system, it can disrupt the air-fuel mixture and cause engine misfire.