Had my 1.6tdi since sept 09 and only used it for short journeys so never got decent mpg out of it, in fact, during the winter when it was cold it was drinking the fuel. Recently have changed jobs and am using the car to do about 600 miles per week and am getting an average of 60mpg out of it just doing 60ish mph on the motorway. The other day I did a journey of 70 miles down the M6 and the computer said 66 mpg when I got back, and I know my computer is reasonably accurate. Just goes to show if you do the miles you get the economy, but you have to do the miles.