X 1991 Buick Century

2.5 L, 4 cyl, Auto 3-spd, Regular Gasoline

EPA Fuel Economy

Combined: 22 MPG

City: 19 MPG

Highway: 28 MPG

X 2009 Audi A6 Avant quattro

3.0 L, 6 cyl, Auto (S6), Premium Gasoline

EPA Fuel Economy

Combined: 21 MPG

City: 18 MPG

Highway: 26 MPG