Well I do drive with a heavy foot, like putting my foot down. on the motorway i see 60mpg straight away and thats driving around 15 miles on it I've not done a long journey in it yet, but local I'm getting around 500 to a tank. Your gtd is really good on diesel getting better figures them me. Well this is the first time ive got 500 because ie only done 850 so far, will my MPG get better?