Two Sedans with some similarities, but otherwise different in most aspects such as the starting price, horsepower, fuel economy, height, and maximum occupancy. First of all, the 2016 Porsche Panamera is priced $50,200 lower compared to the base MSRP of the 2015 BMW ALPINA B7. Also, the 2015 ALPINA B7 has bigger and thirstier engine; the 2016 Panamera gets 1 more mpg. In addition, the ALPINA B7 is slightly taller than the Panamera. And finally, there is a difference in the number of passengers; the BMW ALPINA B7 seats one more the Porsche Panamera. Among similarities are the body structure, market segment, and ground shadow size.