X 2004 Audi S4

4.2 L, 8 cyl, Man 6-spd, Premium Gasoline

EPA Fuel Economy

Combined: 16 MPG

City: 13 MPG

Highway: 20 MPG

X 2003 Porsche Carrera 4 S

3.6 L, 6 cyl, Auto 5-spd, Premium Gasoline

EPA Fuel Economy

Combined: 17 MPG

City: 15 MPG

Highway: 21 MPG