Have a friend in a 20 month old 520 runs at 44t down to about 30t with a 4.4m trailer, across the M62 a couple of times a week as well as the odd run down to London and he is getting 8mpg. A 560 will give a better return than the 520, seems to be a problem with the 520’s and their mpg someone else pulling a fridge at 44t is only getting 6mpg