I have been using Tow/Haul Mode for a week. I was getting 14.6 mpg now getting 15.7 mpg. When going up hills don't have to give as much gas to get it to downshift. The shifting sequence seems to be a little different.I think I will be using this mode all the time. I will just have to remember to push button every time I start. This seems to be good for me because of the weight I carry.