X 2004 Bentley Continental GT

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

EPA Fuel Economy

Combined: 12 MPG

City: 10 MPG

Highway: 16 MPG

X 2005 Porsche Boxster S

3.2 L, 6 cyl, Auto 5-spd, Premium Gasoline

EPA Fuel Economy

Combined: 19 MPG

City: 16 MPG

Highway: 24 MPG