The mpg is no where near stated. According to owners on here it gets between 30-35mpg, the same as the petrol version.
I hear that often about the 140 and some 170 and I dont know if it is because I am an exception to the rule, but over 3 years in this car I get very good MPG, I do mainly motorway and usually get to my 60mile destination on 55mpg at least, and do see more if its a good journey (including being sat in m25 traffic), I see 45-49 on short journeys and have always been very impressed. My trip computer says over average is 49mpg from last 3 months.
2.0tdi 170 2010 start/stop with 117k on the clock. Shell only fuel, stupidly heavy wheels 10j wide.
Thanks for the advise bud that's the main thing holding me back at the moment.Mine has not been mapped, but based on my past experience with another car I would not buy a DTUK box, they are just fooling the ECU into squirting more fuel in, go for a remap where the timing and duration of fuel are set up properly on a map.