My MPG hovers around 13.9 with town and rural, driving 7 miles one way to work. 2007 4wd Limited w/ roof rack, 265/70R17's. I thought new plugs would help but it didn't seem to. I don't pussy foot around in it, I drive it fairly aggressively. The rack negates any freeway bump in mileage. I don't care, I just keep filling it up and smiling when I drive.