Two Sedans with some similarities, but otherwise different in most aspects such as the powertrain, starting price, fuel economy, market segment, and maximum occupancy. First of all, you get 76.1 more mpg with the 2017 Porsche Panamera Hybrid, being a hybrid, than with the 2017 Tesla Model S. Also, there is a notable difference in the starting price of the 2017 Model S, which is $31,600 less than the base MSRP of the 2017 Panamera Hybrid. In addition, you'll seat one more passenger in the Model S than in the Panamera Hybrid. Among similarities are the body structure, market segment, ground shadow size, and height.