MPGCheck

Porsche 928 S4 Fuel Economy History

MPG by year — EPA official data.

Best MPG Year
1988
16 MPG combined
Latest Model
1991
15 MPG combined
YearEngineCityHwyCombinedFuel Cost/yr
1991Premium141715$5,450Details →
1990Premium141715$5,450Details →
1989Premium132015$5,450Details →
1988Premium152016$5,100Details →