Glad someone posted this because I was curious. 2019 Max 4x4 with tow package, 3.73 axle. Only 1700 miles. Ready Lift with 34" tires. Around town and mixed highway use, around 14mpg. On the highway with the cruise set at 80 around 15 mpg. But I experimented with setting the cruise at 65mph for about 40 miles on the highway and was getting 21-22mpg. Clearly the speed makes a big difference for me (and the tires, perhaps the lift). I was expecting a little better but did feel good about seeing the 21mpg for the short bit at 65mph. Does the MPG improve much as the engine get more broken in? I have not figured out a way to reprogram the speedometer for the tires - so I'm traveling about 5% farther than the odometer thinks. Adding 5% to 20MPG is really 21mpg. I have NOT manually calculated the MPG, just going off of the computer. Being realistic, I'm Overall pretty happy with my MPG, my 2008 with about the same tires and lift averages about 10-12mpg with less power. But I was hoping for more. It could be too that I'm actually getting a lot better then the computer thinks, maybe the taller tires confuse it more than I think.