X 2007 GMC Sierra K15 4WD

4.8 L, 8 cyl, Auto 4-spd, Regular Gasoline

EPA Fuel Economy

Combined: 15 MPG

City: 13 MPG

Highway: 18 MPG

X 2012 Infiniti G25

2.5 L, 6 cyl, Auto (S7), Premium Gasoline

MSRP: $33,100 - $34,500

EPA Fuel Economy

Combined: 23 MPG

City: 20 MPG

Highway: 29 MPG