How do you change the spark plugs on a 2000 Volvo S40?

Remove the plastic cover that is to the oil filler cap, it will a torx bit. Be careful when removing the Spark plug wires the coils are connected to them and they arre bolted down. You will need a 8" extension to get the plugs out, I think you will need a 5/8 spark plug socket. Remove old plugs. gap new plugs and install in reverse as removing them.