X 2009 Porsche 911 GT2

3.6 L, 6 cyl, Man 6-spd, Premium Gasoline

EPA Fuel Economy

Combined: 19 MPG

City: 16 MPG

Highway: 23 MPG

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