Two Sedans with some similarities, but otherwise different in most aspects such as the powertrain, fuel economy, market segment, starting price, horsepower, and maximum occupancy. First of all, the 2015 BMW ALPINA B6 Gran Coupe has a more powerful engine and gets 6 mpg less than the 2016 Porsche Panamera Hybrid. Also, the 2016 Panamera Hybrid is priced $21,200 lower compared to the base MSRP of the 2015 ALPINA B6 Gran Coupe. In addition, the ALPINA B6 Gran Coupe seats one more passenger than the Panamera Hybrid. Among similarities are the body structure, market segment, ground shadow size, and height.