X 2008 Rolls-Royce Phantom

6.7 L, 12 cyl, Auto (S6), Premium Gasoline

EPA Fuel Economy

Combined: 14 MPG

City: 11 MPG

Highway: 18 MPG

X 2008 Lexus IS 250

2.5 L, 6 cyl, Auto (S6), Premium Gasoline

EPA Fuel Economy

Combined: 24 MPG

City: 21 MPG

Highway: 29 MPG