The 2005 Rolls-Royce Phantom is available as a 4-door, 5-seat sedan. Starting at $328,750, the 2005 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 19-mpg on the highway. The top of the line 2005Rolls-RoycePhantomLong Wheelbase Sedan , priced at $ 385,000 , 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 19-mpg on the highway.