X 2008 Cadillac STS-V

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

EPA Fuel Economy

Combined: 15 MPG

City: 13 MPG

Highway: 19 MPG

X 2001 GMC Sierra 1500 2WD

4.3 L, 6 cyl, Auto 4-spd, Regular Gasoline

EPA Fuel Economy

Combined: 17 MPG

City: 15 MPG

Highway: 20 MPG