X 2007 Nissan Maxima

3.5 L, 6 cyl, Auto (variable gear ratios), Premium Gasoline

EPA Fuel Economy

Combined: 21 MPG

City: 19 MPG

Highway: 25 MPG

X 2011 GMC Yukon XL 2500 2WD

6.0 L, 8 cyl, Auto 6-spd, Regular Gasoline

MSRP: $44,185 - $48,310

EPA Fuel Economy

Combined: 12 MPG

City: 10 MPG

Highway: 16 MPG