Two Sedans with some similarities, but otherwise different in most aspects such as the starting price, horsepower, ground shadow size, height, and fuel economy. First of all, there is a $295,625 difference in the base MSRP. The 2016 Rolls-Royce Phantom has a higher starting price than the 2016 BMW ALPINA B6 Gran Coupe. Also, the 2016 ALPINA B6 Gran Coupe has a more powerful engine than the 2016 Phantom, but it gets 4 more miles on a gallon of fuel. And finally, the ALPINA B6 Gran Coupe is both significantly smaller and shorter than the Phantom. Among similarities are the body structure, market segment, and maximum occupancy.