I finally got my car from the garage just over a week and a half ago, all of the issues were fixed i am pleased to say. After doing 275 miles I was curious about my fuel economy so I filled up at the station, whoaaaa £69 worth of fuel. I calculated that I was only getting 23MPG. Not best pleased with this economy esp in the current fuel climate. I had noticed a lack of power when going above 2000rpm, I could also hear air blowing under the bonnet. With the help of my father in law revving, I noticed the hose clip from the hose that comes from the turbo to the plastic pipe on the driver side of the engine was moving about loose. There was also some oil mist all over the plastic pipe, bloody garages these days I thought considering no one else had ever worked on the car. I tightened up the clip and the clip at the other end, took it out for a spin . The difference is night and day, this is the car I thought i had bought.... Am I right in thinking that this would account for the poor fuel economy, I believe that this would upset the mixture quite a bit causing overfuelling?