Two Pickups with some similarities, but otherwise different in most aspects such as the horsepower, fuel economy, height, and maximum occupancy. First of all, the 2017 Nissan Titan XD Regular Cab has bigger and thirstier engine; the 2017 Honda Ridgeline gets 3.5 more mpg. Also, the 2017 Ridgeline has a slightly taller body than the 2017 Titan XD Regular Cab. And finally, there is a difference in the number of passengers; the Titan XD Regular Cab seats one more the Ridgeline. Among similarities are the body structure and starting price.