I have just completed a 1,200 mile pensioner roam around. Starting and ending at my home in central Scotland it covered the cotswolds, west country, and London. Always driving at the speed limit, aircon always on, the full to full consumption over the 1,200 miles was 54mpg. The cars info display showed 57mpg. Much was at 70 mph on cruise control, but it included pottering and London traffic. No consideration was given to economic driving, I am impressed.