I get that mileage on average. Now i wouldn't say its fully loaded but that includes a couple ladders, a few hundred lbs of tools, the shelves are full, but not with very heavy supplies. If I drive the speed limit i have seen my average hit 22, usually it sits around 19-20mpg. Highway speeds and above actually are worse for the mpg. The van is geared more for speeds in the 35-55mph range, but i believe there is a transmission option if you order the truck. And keep in mind, a loaded sprinter is probably equivalent to a fully loaded van. There is a ton of space in there.@ Thruxcapacitor is that 20 mpg when fully loaded? That would go a long way in in reducing the actual cost of ownership over my E-350.