X 2007 Infiniti M35x

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

EPA Fuel Economy

Combined: 18 MPG

City: 16 MPG

Highway: 22 MPG

X 2003 Buick Regal

3.8 L, 6 cyl, Auto 4-spd, Premium Gasoline

EPA Fuel Economy

Combined: 19 MPG

City: 16 MPG

Highway: 25 MPG