Had the Truck for about a week and a half now and finally ran a tank of gas through it. Don't know just how full the Dealership had filled it when I picked it up so don't know how accurate the run was but got 18.43 MPG on the maiden tank of gas!! Only change so far is an AFE Pro Dry S drop in replacement air filter. Have a Undercover Flex Tonneau Cover on the way also. Around Thanksgiving time will take it for a easy Break-In run from Omaha down to the Fort Worth area and back just to put some road miles on it and check the true Highway mileage. The Tacoma World site is great ... have been enjoying just browsing through ... LOADS of good informative stuff in here! Thanks.