X 2011 Cadillac STS

3.6 L, 6 cyl, Auto (S6), Regular Gasoline

MSRP: $47,280 - $56,380

EPA Fuel Economy

Combined: 21 MPG

City: 18 MPG

Highway: 27 MPG

X 2009 BMW X5 xDrive 30i

3.0 L, 6 cyl, Auto (S6), Premium Gasoline

EPA Fuel Economy

Combined: 18 MPG

City: 15 MPG

Highway: 21 MPG