None.
This car is the most reliable car that I have ever driven.
It runs smoothly and handles like no other car around.
The engine has a great sound and takes off like a rocket from the traffic lights.
Petrol consumption is quite good for a V6 and as for comfortability, well you'll just have to to take one for a spin.
Mine has black leather and the ergo pack (electric seats) which makes it a luxury to go for a cruise. If you ever see one for a reasonable price and in good condition you definitely get my recommendation.
Your review sounds a little bit strange mate.
If it is the best car in the world and the most reliable car, you have ever owned, why you said NO at the question, "Would you buy another car from this manufacturer?"
Our experience with the Xantia was not as glowing as yours.
Yes, the car drove very nicely and was great for long journeys, but it spent the majority of its first year with the dealers who could not fix its habit of selecting third and staying there no matter what. Frustrations with lack of factory support eventually caused thedealer to give us our money back and support us into buying another brand from within their chain and gave up the agency, it appears ours was the final straw!!
If you love the car and don't want to buy another one from Citroen, you should at lease give a reason why.