X 2011 Cadillac STS AWD

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

EPA Fuel Economy

Combined: 21 MPG

City: 18 MPG

Highway: 27 MPG

X 2010 Mercury Mariner Hybrid FWD

2.5 L, 4 cyl, Auto (variable gear ratios), Regular Gasoline

MSRP: $30,105

EPA Fuel Economy

Combined: 32 MPG

City: 34 MPG

Highway: 31 MPG

X 2011 Chevrolet Avalanche 1500 2WD

5.3 L, 8 cyl, Auto 6-spd, Regular Gasoline or E85

MSRP: $36,300

EPA Fuel Economy

Regular Gasoline

Combined: 17 MPG

City: 15 MPG

Highway: 21 MPG

E85

Combined: 13 MPG

City: 11 MPG

Highway: 16 MPG