Two Pickups with some similarities, but otherwise different in most aspects such as the horsepower, fuel economy, ground shadow size, starting price, height, and maximum occupancy. First of all, there is a $3,460 difference in the base MSRP. The 2017 Toyota Tundra Double Cab has a higher starting price than the 2017 GMC Canyon Crew Cab. Also, the 2017 Tundra Double Cab has bigger and thirstier engine; the 2017 Canyon Crew Cab gets 4.8 more mpg. In addition, not only Canyon Crew Cab is significantly smaller, but it's also slightly shorter than the Tundra Double Cab. And finally, there is a difference in the number of passengers; the Toyota Tundra Double Cab seats one more the GMC Canyon Crew Cab. Among similarities is the body structure.