Two Sedans with some similarities, but otherwise different in most aspects such as the powertrain, horsepower, fuel economy, market segment, starting price, ground shadow size, and maximum occupancy. First of all, the 2016 Cadillac CTS-V has a more powerful engine than the 2015 Porsche Panamera Hybrid, and it gets 33 fewer miles on a gallon of fuel. Also, the 2016 CTS-V is priced $15,005 lower compared to the base MSRP of the 2015 Panamera Hybrid. In addition, the CTS-V has a slightly smaller body than the Panamera Hybrid. And then, the Cadillac CTS-V seats one more passenger than the Porsche Panamera Hybrid. Among similarities are the body structure, market segment, and height.