Two Pickups with more similarities, such as the body structure, ground shadow size, height, and maximum occupancy, than differences, like the powertrain, horsepower, starting price, and fuel economy. First of all, the 2017 Nissan Titan King Cab has a more powerful engine than the 2017 Ram 1500 Quad Cab Diesel, and it gets 3.5 fewer miles on a gallon of fuel. Also, there is a notable difference in the starting price of the 2017 Titan King Cab, which is $5,345 less than the base MSRP of the 2017 1500 Quad Cab Diesel. Among similarities are the body structure, ground shadow size, height, and maximum occupancy.