X 1999 Rolls-Royce Silver Spur

6.8 L, 8 cyl, Auto 4-spd, Premium Gasoline

EPA Fuel Economy

Combined: 12 MPG

City: 10 MPG

Highway: 15 MPG

X 2009 BMW X5 xDrive 30i

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

EPA Fuel Economy

Combined: 18 MPG

City: 15 MPG

Highway: 21 MPG