I had a 15' Tundra crewmax 2wd for 6 years and now have a 21' TRD Pro crewmax. The 2wd got slightly better mileage than my 21' Land Cruiser and my TRD Pro gets slightly worse gas mileage. I'd say average for my rural SC commuting would be 16.5 mpg 2wd Tundra, 15.5 mpg LC HE, and 15 mpg TRD...