Two Pickups with some similarities, but otherwise different in most aspects such as the fuel economy, ground shadow size, horsepower, height, and maximum occupancy. First of all, the 2018 Toyota Tundra Double Cab has bigger and thirstier engine; the 2018 Honda Ridgeline gets 6.5 more mpg. Also, not only 2018 Ridgeline is significantly smaller, but it's also slightly shorter than the 2018 Tundra Double Cab. And finally, the Tundra Double Cab seats one more passenger than the Ridgeline. Among similarities are the body structure and starting price.