Despite a lot of stick from friends about the lack of reliability of Citroens, I have had no problems with mine except general wear and tear (tyres, oil changes etc.).
Recently went in for a cambelt change at 51,000 miles, because I felt the need to be careful, but better to be safe than sorry.
The interior has a lot of gadgets, which are all relatively easy to use, and providing the interior is kept clean, signs of wear are minimal. The seats are comfortable, and I find there is sufficient space for even the tallest of drivers (I am 6ft 5"). The only criticism I have is that there is not a lot of room in the back for passengers, but I wanted a hot hatch, not a luxury saloon.
It gets looks everywhere it goes, looks great in a variety of colours (mine is black, but I love the red too) and is a different take on the hot hatch which is something I loved. The spoiler looks great, and the VTS really does stand out. The only thing I disliked about the exterior was the alloys, which I have changed to OZ 18" wheels, which look great.
Now, the C4 VTS is not the fastest car around by any means, but it is great fun to drive everyday, with enough power when needed, but not too much. It will accelerate from 0-62 in 8.3 seconds and reach a top speed of 140mph, yet I have had 147 out of mine with only minor modifications. One quarrel I did have was with the speed of the gear change, which does seem a bit slow on the uptake, but it isn't unbearable.
The suspension is a godsend. The car sticks to the road like a go kart, and is brilliant through the corners, to the extent that I will keep up with Focus ST's down country lanes.
And if you're bothered about petrol, don't be. Even with my foot down, I still usually manage at least 25mpg.
Originally I was looking at many of the hot hatches, Focus ST, Renault Megane, Clio 182 etc. But they all seemed too much for a day to day basis, and far more on insurance (I am only 21). By all means, if you want a heap load of power, go for something else, but if you want a brilliant everyday car, with that little wild streak, this is perfect. It's an absolute dream.