X 2006 Buick Lacrosse/Allure

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

EPA Fuel Economy

Combined: 21 MPG

City: 17 MPG

Highway: 28 MPG

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