Because of its hulking size, the 2007 Toyota Tundra CrewMax is equipped with a standard 4.7-liter V8 making 271 horsepower. We predict that most will come equipped with the optional 5.7-liter V8 which has 381 hp and 401 lb.-ft. of torque. Not only does the 5.7-liter engine crank out massive motive force, it squeaks out 16 mpg in the city and 20 mpg on the highway with 2WD (14/18 with 4WD). A six-speed automatic and a standard 10.5-inch rear differential get the power to the ground, and the Tundra is equipped with standard 18-inch wheels so that the biggest brakes in the class can be fitted. Toyota also announced that an ethanol-capable V8 is due for the 2009 Tundra.