Two Pickups with more similarities, such as the body structure, starting price, ground shadow size, height, and maximum occupancy, than differences, like the model year, horsepower, and fuel economy. First of all, the 2013 Tundra CrewMax Cab has bigger and thirstier engine; the 2016 Silverado 1500 Double Cab gets 3 more mpg. Among similarities are the body structure, starting price, ground shadow size, height, and maximum occupancy.