I bought a 406 (X reg) in Feb with a years warranty cover. In Sept the air con failed so I took it to the local Pug dealers who regassed same (cost £100). Two weeks later no workee, back to dealer, needs a new compressor, luckily covered by warranty.
It will take 5days to do as parts are exchanged, question is does the job involve the main drive belt in any way. If it does I would prefer to have a new belt.
The dealer has also said that I will be extra for the gas which I feel is a bit suss, after all how can they tell the unit is working if there is no gas in it.