What we have here are two Pickups from Toyota with some differences, such as the horsepower, fuel economy, starting price, ground shadow size, height, and maximum occupancy. First of all, the 2017 Toyota Tacoma Double Cab is priced $5,095 lower compared to the base MSRP of the 2017 Toyota Tundra Regular Cab. Also, the 2017 Tundra Regular Cab has bigger and thirstier engine; the 2017 Tacoma Double Cab gets 4.6 more mpg. In addition, the Tacoma Double Cab body is slightly smaller than the Tundra Regular Cab, and in addition to that, it's also shorter. And finally, there is a difference in the number of passengers; the Toyota Tundra Regular Cab seats one more the Toyota Tacoma Double Cab. Among similarities is the body structure.