What is the common cause of engine vibration in Audi A3?

Every time I start my Audi A3, the engine is shaking and there is a noticeable vibration. What could be causing this?

The most likely cause of engine vibration in Audi A3 is spark plug issues. Check your spark plugs and see if they need to be replaced.

Another possible cause is a faulty ignition coil. Have a mechanic check it and replace if necessary.

Low engine oil level or dirty engine oil can also cause engine vibration. Check the oil level and replace if necessary.