Hi
for what it's worth, thought I'd share my experience of the diesel economy.
I was not expecting published figures when I bought the car-second hand, 26,000 miles, 2011. However, I did theoretically discount the published 62.8 mpg by 10% and then round down-resulting in a 56 target figure.
When I first took over the car I appeared to be achieving this-by driving as economically as I could (and with the occasional bit of coasting!)
But it was a bit boring-for as many of you say, the diesel does cry out to be driven. I had an old MX 5 so could exorcise some of that.
Having sold the MX5, I began to drive a bit more actively, and the mpg drifted down to between 51 and 52.
What I now do is drive economically for 50% of the time and a bit less so for the remainder.
The results now are that the mpg is between 53 and 54.5. Can't get back to 56 even if I try-but then the car has done 56,000 so is not in the first flush of youth-as is not it's driver!
Happy New Year to anyone who may read this