Now that's an interesting car. As Neil said, you must be the very first Auto +4 on the forum. We will all be very interested in how you get on.
If you are unhappy with the fuel consumption, do go along to your dealer and get the ECU up grade.
I had mine done a while back and over the following 7000 miles a reasonably accurate measure of miles between fill ups shows an improvement of around 10mpg so well worth doing especially as it is a free up grade!!
I hope you enjoy your car in the coming season.