Two SUVs with more similarities, such as the body structure, starting price, height, and maximum occupancy, than differences, like the horsepower, fuel economy, and ground shadow size. First of all, the 2016 Volkswagen Tiguan has bigger and thirstier engine; the 2015 GMC Terrain gets 2 more mpg. And finally, the body structure of 2015 Terrain is slightly larger than that of the 2016 Tiguan. Among similarities are the body structure, starting price, height, and maximum occupancy.