X 2009 Mercury Sable FWD

3.5 L, 6 cyl, Auto 6-spd, Regular Gasoline

EPA Fuel Economy

Combined: 21 MPG

City: 18 MPG

Highway: 28 MPG

X 2004 Porsche Boxster S

3.2 L, 6 cyl, Man 6-spd, Premium Gasoline

EPA Fuel Economy

Combined: 19 MPG

City: 16 MPG

Highway: 24 MPG