X 2007 Pontiac Grand Prix

3.8 L, 6 cyl, Auto (S4), Premium Gasoline

EPA Fuel Economy

Combined: 20 MPG

City: 17 MPG

Highway: 26 MPG

X 1998 Rolls-Royce Silver Spur Park Ward

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

EPA Fuel Economy

Combined: 11 MPG

City: 9 MPG

Highway: 13 MPG