X 2009 Bentley Arnage RL

6.7 L, 8 cyl, Auto (S6), Premium Gasoline

EPA Fuel Economy

Combined: 11 MPG

City: 9 MPG

Highway: 15 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