What kind of gas mileage does a 16 foot gas rental moving truck get?

I am moving from Chicago to Arkansas, and I need to know about how much gas mileage that I am going to be getting on this 725 mile trip.|||Depends on the actual truck, I always tell customers 10-11 miles per gallon.|||They average about 12 MPG...but of course this depends on how much weight you are hauling, and the conditions (hilly, mountains, plains....).|||Isuzu, Ford, or GMC? Ask the rental agent. He would know best.