Engine light on 2005 Jaguar S-Type

The engine light came on in my 2005 Jaguar. It was checked and the codes stated 3 cylinders misfired. What would cause this?

3 answers
Most likely a bad ignition coils, I have replaced a lot of them, replace the spark plugs while you are servicing the car if they have not been replaced recently.
bad spark plug are the housing aka wires
some time is oil in cylinder 3 if no change coil and the spakplug