Last months Car and Driver had a good 4-5 page article covering their long term Tundra demo truck. I figured I would share what they wrote about fuel economy in the I force. Sticker quoted 14/18. They got 13 city and 12 towing. They hauled several loads with it. It did great with open trailers but enclosed trailers gave it a fit. Even at only 7K lbs they could not control the sway on the highway. Toyota rates the truck to tow 10,300.