One of my close relative got his new 2013 Toyota Tundra 4.0L V6 last February 23 this year, the salesman say it consume 16mpg city driving and 20mpg highway driving. But after a month now of driving we have notice that it consumes an average of 14mpg highway driving. My uncle got upset with the fuel consumption. Now he wants to return the car to his dealership. Any thoughts or comment on the fuel consumption why new car got that fuel efficiency problem?