I could improve my mpg if I wasn't such a lazy sh^te, and walked to my local Lidl instead of driving.
Today, after one such shopping trip, I checked my figures for today (ScanGauge E).
Distance travelled 0.6 miles
Today's mpg 26.2
Maximum speed 24 mph
Average speed 9 mph
Cost £0.13
The blue light hadn't even gone out. And that is car out of garage, lock garage door, stop at supermarket, do shop, back to garage, open garage door, car back in.
At least now I am not having my Monday to Friday double 3.6 mile trips, to take my wife to and from her work, as she is currently off ill.