Rover owners: Changed the plugs

Having a poke around to see if there was anything obvious that could be causing the loss of power and decided to change the plugs.

Nothing obvioulsy wrong, but the gaps had closed quite a bit due to a build-up on the non-electrode bit. The electrode also looks a lot thinner than the new ones, but that could just be due to the different model. (old irridium, new platinum). Passat's being serviced tomorrow, so I'll see how it goes.