X 2000 Mercury Grand Marquis

4.6 L, 8 cyl, Auto 4-spd, Regular Gasoline

EPA Fuel Economy

Combined: 18 MPG

City: 16 MPG

Highway: 23 MPG

X 2008 Infiniti M45

4.5 L, 8 cyl, Auto (S5), Premium Gasoline

EPA Fuel Economy

Combined: 18 MPG

City: 16 MPG

Highway: 21 MPG