X 2009 Bentley Continental Flying Spur

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

EPA Fuel Economy

Combined: 12 MPG

City: 10 MPG

Highway: 17 MPG

X 2003 Porsche Boxster S

3.2 L, 6 cyl, Auto (S5), Premium Gasoline

EPA Fuel Economy

Combined: 18 MPG

City: 15 MPG

Highway: 24 MPG