I have towed my TAB 320 twice about 200 miles each time. I don't know actual MPG but it was about 10 to12 MPG once with a full charge and once with about 50% charged. The battery was drained before I got to the mountains. I think next time I will try E-save until I get to the mountains, but I don't think this will improve the MPG much. The trailer weighs about 2000lbs. I did turn off the A/C on the big hills and it wasn't too hot out. My 4Xe pulled the trailer great I didn't feel uneasy going up and down hills, it stops great and the trailer tracks behind the Jeep great. I do not have or feel I need trailer breaks, but I don't think I would want a trailer any bigger.Has anyone used theirs to tow trailers or toys? Have a 7x14 trailer we use to tow our KRX 1000 and two dirt bikes. Just wondered how it does. TIA!!