The 2020 Rolls-Royce Phantom is available as a 4-door, 5-seat sedan. Starting at $455,000, the 2020 Rolls-Royce Phantom Sedan is powered by a 6.8L, 12-cylinder engine mated to an automatic transmission that returns an EPA estimated 12-mpg in the city and 20-mpg on the highway. The top of the line 2020 Rolls-Royce Phantom EWB Sedan, priced at $535,000, is powered by a 6.8L, 12-cylinder engine mated to an automatic transmission that returns an EPA estimated 12-mpg in the city and 20-mpg on the highway.