X 2012 Audi A6 quattro

3.0 L, 6 cyl, Auto (S8), Premium Gasoline

MSRP: $49,900

EPA Fuel Economy

Combined: 22 MPG

City: 19 MPG

Highway: 28 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