Just for the curiosity on my side, I sat down and tallied up all the fuel used since new, 19 Jul 04 until a couple days ago, 15,345litres for 114,522km, works out to as close to 21mpg as you can get. City/highway combined pulling a 22' travel trailer or a 16'boat. I don't think any of the gas engines can come close to this in reality, no matter how much the manufacturers say the can. Beyond that, it will pull far more than a 22' trailer without a lot of effort.