Hard to know, but a travel trailer is the worst trailer to tow for fuel economy (tons of drag), and being that heavy, I wouldn't be surprised if it's below 15 MPG. It'll also depend how fast you want to travel, AND the terrain. Mountanous roads would make it a lot worse. And pay attention to your payload; it's not that much (1,501 lbs on mine), and you need to substract the tongue weight from that, so about 1K-lbs left for all passengers AND cargo. Plus maximum tongue weight is 500, which you might be borderline close, so I wouldn't put anything in front of the trailer, like a storage box, etc. Good luck.