Mines good, about 28 - 35 MPG depending on trip length etc, and just a little less when got horses in. My 4x4 and trailer only does about 22mpg when towing 1 horse!!!!! Box is for sale though!
I have no idea because it varies with the make of vehicle. I have a diesel 4x4 but I use half diesel and half vegetable oil to improve the consumption.
was either going to ask someone to do it for me or hire a self drive. But just found a guy who will do it for a pound a mile and let me travel with him.