GMC T15 (S15) Pickup 4WD Fuel Economy History

MPG by year — EPA official data.

Best MPG Year

1987

21 MPG combined

Latest Model

1988

20 MPG combined

Year	Engine	City	Hwy	Combined	Fuel Cost/yr
1988	Regular	18	24	20	$3,400	Details →
1987	Regular	19	23	21	$3,200	Details →
1986	Regular	19	23	21	$3,200	Details →
1985	Regular	19	24	21	$3,200	Details →
1984	Regular	18	23	20	$3,400	Details →