When the work van was bust a couple of years ago I had to use my old V8 Discovery for the trip down to Hampshire, with a small trailer on, somewhere about 3/4 of a tonne. Somehow managed 18 mpg on the way down, but oddly enough coming home a couple of days later and with no trailer it was more like 11mpg

Generally drive pretty steady now, not that the 90 inspires anything but steady. Normally somewhere around 29-32 mpg.