15.5 MPG is more than I got stock, and it was a lightweight 4 door with soft top and factory half doors. Honestly, you might be able to squeeze a bit more out of it if you change your driving habits a bit. Otherwise, that's pretty good for a JK in my opinion. Not trying to be a smart ass, but Napalm is right. A Jeep is not the best daily driver you can get, nor the most economical vehicle you can get. A Jeep is a lifestyle. You give up some conveniences for a whole lot of fun and memories!