My mum owns a MY00 UK turbo, it has 14K on the clock, and recently it has been lacking power, like in 3rd foot to the boar 4K RPM and theres nothing there, similarly in 4th, anyway the dealer came down and picked up the car and drove it to our dealer,(left us with a brand new legacy estate) and he noticed the same thing we went to pick it up to day and he said its somthing to do with the fuel being dirty, he took some fuel out and put it in a clear beaker waited for it to settle and there was a thick black layer of dirt settled at the bottom, he thinks it may be condensation in the tank?, anyway he has added some mixture to the fuel cant remember what but it seems to be back to normal, anyone had the same problem?