X 2008 Porsche Cayenne Turbo

4.8 L, 8 cyl, Auto 6-spd, Premium Gasoline

EPA Fuel Economy

Combined: 14 MPG

City: 12 MPG

Highway: 19 MPG

X 2012 Chevrolet Silverado K15 4WD

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

MSRP: $25,635 - $42,440

EPA Fuel Economy

Combined: 15 MPG

City: 14 MPG

Highway: 18 MPG