The mpg in my car has really gone up over the past few days, by 10 or 15%. It seems to have coincided with the recent warm weather, but I'm not entirely sure. I normally fill up at Sainsbury's but put £30 of shell fuel in on Friday, so could be that as well. Or it could be that my engine has suddenly decided it's done enough miles and loosened up all of a sudden, but that seems unlikely - I've done 9000 miles now. I've also recently turned off my heated seats after being on every time I drive nearly all winter, but that was a while ago so don't think it's that. Anyone else with the 2.0 TDI seen anything similar in the warm weather? Going to continue trying different things to find out what it could be, whether it's the fuel or the weather!