Mercedes-Benz S420 Fuel Economy History

MPG by year — EPA official data.

Best MPG Year

1999

16 MPG combined

Latest Model

1999

16 MPG combined

Year	Engine	City	Hwy	Combined	Fuel Cost/yr
1999	Premium	14	20	16	$5,100	Details →
1998	Premium	14	20	16	$5,100	Details →
1997	Premium	14	20	16	$5,100	Details →
1996	Premium	14	20	16	$5,100	Details →
1995	Premium	14	19	16	$5,100	Details →
1994	Premium	14	18	15	$5,450	Details →