Was on holidays all last week, covered almost 1000miles, with the bulk of that travelling to and from Devon, quite a lot of motorway miles at 70mph, fully laden, roofbox and 4kids. Average mpg reads 37 but I worked it out to be around 32. Does that sound about right?
It was super on the trip though, couldn't have done without the aircon, temp actually read 39 on Sunday!!