Had my DSG GTD now for about a month. Long term average is 49.5 and I've got 53.2 out of my last tank.
My daily commute is 50 miles one way (Stoke to Derby on the A50) and I always have it in Eco and don't usually go above 60mph. Some may laugh at that but I'm never in a rush to get to work so just take my time. The benefit of that is I can average 59.8mpg over the two journeys! Still not managed to crack 60 yet though

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The fuel that I save driving in this way I then use up on the B roads once I get off the dual carriageway

which then brings my average down to about 50ish. I think if I drove at 70-80 on the commute to work I would get about 45 maybe 50 if it was clear.
The car has done 9k now so can still probably loosen up a tad more which may see me crack the 60mpg barrier on my journey to work, but still not hit the official figures. Initially I was a bit disappointed, I thought I would have been able to get 60-65 on the long journeys but now I'm not really bothered. Love the car and the performance (I don't drive like a Nunn all the time) so happy with what I'm getting.