I'm going to say it's relatively close to that. That's assuming you keep it stock. Put certain modifications on there and it's going to change those modifications will include but are not limited to, bigger tires, aftermarket front bumper, lift kits, and anything that might be on the roof.
For me running a D40 with the old Powertrain I have quite a few different modifications and if I just run 87 octane I can usually see anywhere from 14 to 17 MPG depending on the conditions. With premium (91 and up) I can see anywhere from 15 to 20 MPG depending on my conditions.