15 Tundra with the 5.7. Dashboard shows 18 mpg, hand calculations (accounting for slight error in speedo due to tire size) has me in the 17s. Combined highway and town driving, not much city. Last tank came up 17.3 mpg.
Old 02 Tundra it replaced would do 20 on the highway with CC set to 70, 17 in town.
Yes, I do drive like an old lady usually to conserve gas.