X 2010 Chevrolet Cobalt XFE Sedan

2.2 L, 4 cyl, Man 5-spd, Regular Gasoline

MSRP: $14,990

EPA Fuel Economy

Combined: 30 MPG

City: 25 MPG

Highway: 37 MPG

Average: 36.1 MPG

Range: 34  to  40 MPG

Based on 3 vehicles

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X 2011 Rolls-Royce Phantom

6.7 L, 12 cyl, Auto (S6), Premium Gasoline

MSRP: $380,000

EPA Fuel Economy

Combined: 14 MPG

City: 11 MPG

Highway: 18 MPG