GMC
K15 Suburban 4WD
U.S. fuel economy and specifications from the EPA.

16Best combined MPG1984 model year
1984–1986Model years3 with EPA ratings
14Rated configurationsDrive, transmission and engine
5.7–6.2 LEngine sizeDisplacement
Best combined MPG by model year
The highest EPA rating among each year's configurations.
1984 16 MPG
1985 16 MPG
1986 16 MPG
4 configurations.
4-Wheel or All-Wheel Drive · Automatic 4-spd
Regular gasoline · Special Purpose Vehicles
- Combined MPG
- 12
- Engine displacement
- 5.7 L
- Cylinders
- 8
4-Wheel or All-Wheel Drive · Automatic 4-spd
Regular gasoline · Special Purpose Vehicles
- Combined MPG
- 12
- Engine displacement
- 5.7 L
- Cylinders
- 8
4-Wheel or All-Wheel Drive · Manual 4-spd
Regular gasoline · Special Purpose Vehicles
- Combined MPG
- 11
- Engine displacement
- 5.7 L
- Cylinders
- 8
4-Wheel or All-Wheel Drive · Automatic 4-spd
Diesel · Special Purpose Vehicles
- Combined MPG
- 16
- Engine displacement
- 6.2 L
- Cylinders
- 8
4-Wheel or All-Wheel Drive · Automatic 4-spd
Regular gasoline · Special Purpose Vehicle 4WD
- Combined MPG
- 12
- Engine displacement
- 5.7 L
- Cylinders
- 8
4-Wheel or All-Wheel Drive · Manual 4-spd
Regular gasoline · Special Purpose Vehicle 4WD
- Combined MPG
- 11
- Engine displacement
- 5.7 L
- Cylinders
- 8
4-Wheel or All-Wheel Drive · Automatic 4-spd
Diesel · Special Purpose Vehicle 4WD
- Combined MPG
- 16
- Engine displacement
- 6.2 L
- Cylinders
- 8
4-Wheel or All-Wheel Drive · Automatic 4-spd
Regular gasoline · Special Purpose Vehicles
- Combined MPG
- 12
- Engine displacement
- 5.7 L
- Cylinders
- 8
4-Wheel or All-Wheel Drive · Automatic 4-spd
Diesel · Special Purpose Vehicles
- Combined MPG
- 16
- Engine displacement
- 6.2 L
- Cylinders
- 8
4-Wheel or All-Wheel Drive · Automatic 4-spd
Regular gasoline · Special Purpose Vehicle 4WD
- Combined MPG
- 12
- Engine displacement
- 5.7 L
- Cylinders
- 8
4-Wheel or All-Wheel Drive · Manual 4-spd
Regular gasoline · Special Purpose Vehicle 4WD
- Combined MPG
- 11
- Engine displacement
- 5.7 L
- Cylinders
- 8
4-Wheel or All-Wheel Drive · Automatic 4-spd
Diesel · Special Purpose Vehicle 4WD
- Combined MPG
- 16
- Engine displacement
- 6.2 L
- Cylinders
- 8
4-Wheel or All-Wheel Drive · Automatic 4-spd
Regular gasoline · Special Purpose Vehicle 4WD
- Combined MPG
- 12
- Engine displacement
- 5.7 L
- Cylinders
- 8
4-Wheel or All-Wheel Drive · Automatic 4-spd
Diesel · Special Purpose Vehicle 4WD
- Combined MPG
- 16
- Engine displacement
- 6.2 L
- Cylinders
- 8