Two Sedans with more similarities, such as the body structure, starting price, ground shadow size, height, and maximum occupancy, than differences, like the powertrain, horsepower, fuel economy, and market segment. First of all, the 2018 Kia Cadenza has a more powerful engine than the 2018 Honda Clarity Plug-in Hybrid, and it gets 19 fewer miles on a gallon of fuel. Among similarities are the body structure, starting price, ground shadow size, height, and maximum occupancy.