X 2007 Audi A6

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

EPA Fuel Economy

Combined: 21 MPG

City: 18 MPG

Highway: 27 MPG

X 2004 Buick Rendezvous FWD

3.4 L, 6 cyl, Auto 4-spd, Regular Gasoline

EPA Fuel Economy

Combined: 20 MPG

City: 17 MPG

Highway: 24 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