#1178

GMC S15 Pickup

🇺🇸 United States ·1984–1990· pickup

petroldiesel

what the fuel types mean

petrol Cheapest to buy, simple, but fuel is expensive in NL.
diesel Frugal on long trips, but NL road tax is much higher and city bans are growing.

spec sheet

built: 1984–1990
body: pickup
engine: 1.9 L–4.3 L
cylinders: 4–6
turbo: no
power: —
drive: all-wheel drive, rear-wheel drive
gearbox: automatic, manual
seats: —
doors: —
weight: —
fuel use: —
CO₂: —
US rating: 16–29 mpg
EV range: —
US size class: Small Pickup Trucks, Standard Pickup Trucks
avg new price NL: —

Ranges cover every version ever sold. Blank means the sources don't say.

🇺🇸 US versions (66)

Every version the EPA tested, model years 1984–1990. mpg is combined; L/100 km converted.

year	version	engine	gearbox	drive	fuel	mpg	L/100
1990	S15 Pickup 2WD	2.5 L 4 cyl	Automatic 4-spd	RWD	Regular	21	11.2
1990	S15 Pickup 2WD	2.5 L 4 cyl	Manual 5-spd	RWD	Regular	22	10.7
1990	S15 Pickup 2WD	2.8 L 6 cyl	Manual 5-spd	RWD	Regular	19	12.4
1990	S15 Pickup 2WD	4.3 L 6 cyl	Automatic 4-spd	RWD	Regular	18	13.1
1990	S15 Pickup 2WD	4.3 L 6 cyl	Manual 5-spd	RWD	Regular	18	13.1
1990	S15 Pickup 4WD	4.3 L 6 cyl	Automatic 4-spd	4-Wheel or AWD	Regular	17	13.8
1990	S15 Pickup 4WD	4.3 L 6 cyl	Manual 5-spd	4-Wheel or AWD	Regular	16	14.7
1989	S15 Pickup 2WD	2.5 L 4 cyl	Automatic 4-spd	RWD	Regular	21	11.2
1989	S15 Pickup 2WD	2.5 L 4 cyl	Manual 5-spd	RWD	Regular	22	10.7
1989	S15 Pickup 2WD	2.8 L 6 cyl	Manual 5-spd	RWD	Regular	19	12.4
1989	S15 Pickup 2WD	4.3 L 6 cyl	Automatic 4-spd	RWD	Regular	18	13.1
1989	S15 Pickup 4WD	2.8 L 6 cyl	Manual 5-spd	4-Wheel or AWD	Regular	18	13.1
1989	S15 Pickup 4WD	4.3 L 6 cyl	Automatic 4-spd	4-Wheel or AWD	Regular	17	13.8
1989	S15 Pickup 4WD	4.3 L 6 cyl	Automatic 4-spd	4-Wheel or AWD	Regular	17	13.8
1988	S15 Pickup 2WD	2.5 L 4 cyl	Automatic 4-spd	RWD	Regular	21	11.2
1988	S15 Pickup 2WD	2.5 L 4 cyl	Manual 5-spd	RWD	Regular	23	10.2
1988	S15 Pickup 2WD	2.8 L 6 cyl	Automatic 4-spd	RWD	Regular	18	13.1
1988	S15 Pickup 2WD	2.8 L 6 cyl	Manual 4-spd	RWD	Regular	19	12.4
1988	S15 Pickup 2WD	2.8 L 6 cyl	Manual 5-spd	RWD	Regular	19	12.4
1988	S15 Pickup 2WD	4.3 L 6 cyl	Automatic 4-spd	RWD	Regular	18	13.1
1987	S15 Pickup 2WD	2.5 L 4 cyl	Automatic 3-spd	RWD	Regular	20	11.8
1987	S15 Pickup 2WD	2.5 L 4 cyl	Automatic 4-spd	RWD	Regular	21	11.2
1987	S15 Pickup 2WD	2.5 L 4 cyl	Manual 4-spd	RWD	Regular	21	11.2
1987	S15 Pickup 2WD	2.5 L 4 cyl	Manual 5-spd	RWD	Regular	22	10.7
1987	S15 Pickup 2WD	2.8 L 6 cyl	Automatic 3-spd	RWD	Regular	16	14.7

Sources: fueleconomy.gov.Updated 2026-10-24.