remove a plastic cover from the bottom of car, than you can see a screw (key 21) or imbus 10. turn off a screw and let oil to go out in some balloon. remove a cup from motor, to remove vacuum and make oil go faster. when is out (about 10 minutes), remove oil filter. put a new filter, back a screw, and fill a new oil (total quartz 7000 about 4.0 liter) that's it!

Mark 1 version - side-lamps (and headlight bulbs) can be replaced following the directions in the handbook, but it's all done by touch and feel since you can't see a thing. It helps if your hands and fingers are not too large, and you might be bent over the front of the car for a while especially if the bulb retaining clip decides to spring off from its fitting. after replacing one bulb I took it to local independent repair shop who did it in 5 minutes for a fiver.

Mark 2 - bulb replacement requires the removal of the font bumper - can be a DIY job (but beware if you have headlamp washers set into bumper). Citroen dealer wanted to charge £!00; same local repairer as above did it for £45. A crazy arrangement, but apparently more and more common across a range of makes and models.

You must use a crow bar