X 1998 Buick Century

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

EPA Fuel Economy

Combined: 21 MPG

City: 17 MPG

Highway: 27 MPG

Average: 25.8 MPG

Range: 18  to  32 MPG

Based on 8 vehicles

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X 2002 Audi A8 quattro

4.2 L, 8 cyl, Auto (S5), Premium Gasoline

EPA Fuel Economy

Combined: 18 MPG

City: 15 MPG

Highway: 23 MPG