GMC
S15 Pickup 4WD
U.S. fuel economy and specifications from the EPA.
18Best combined MPG1989 model year
1989–1990Model years2 with EPA ratings
5Rated configurationsDrive, transmission and engine
2.8–4.3 LEngine sizeDisplacement
Best combined MPG by model year
The highest EPA rating among each year's configurations.
1989 18 MPG
1990 17 MPG
2 configurations.
4-Wheel or All-Wheel Drive · Automatic 4-spd
Regular gasoline · Standard Pickup Trucks
- Combined MPG
- 17
- Engine displacement
- 4.3 L
- Cylinders
- 6
4-Wheel or All-Wheel Drive · Manual 5-spd
Regular gasoline · Standard Pickup Trucks
- Combined MPG
- 16
- Engine displacement
- 4.3 L
- Cylinders
- 6
4-Wheel or All-Wheel Drive · Manual 5-spd
Regular gasoline · Standard Pickup Trucks
- Combined MPG
- 18
- Engine displacement
- 2.8 L
- Cylinders
- 6
4-Wheel or All-Wheel Drive · Automatic 4-spd
Regular gasoline · Standard Pickup Trucks
- Combined MPG
- 17
- Engine displacement
- 4.3 L
- Cylinders
- 6
4-Wheel or All-Wheel Drive · Automatic 4-spd
Regular gasoline · Standard Pickup Trucks
- Combined MPG
- 17
- Engine displacement
- 4.3 L
- Cylinders
- 6