X 2010 Audi S5 Cabriolet

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

MSRP: $58,250

EPA Fuel Economy

Combined: 20 MPG

City: 17 MPG

Highway: 26 MPG

X 2008 Infiniti QX56 2WD

5.6 L, 8 cyl, Auto 5-spd, Premium Gasoline

EPA Fuel Economy

Combined: 14 MPG

City: 12 MPG

Highway: 18 MPG