1991 · Special Purpose Vehicle · Diesel
1991 GMC Suburban Diesel MPG & fuel economy
The 1991 GMC Suburban Diesel is a special purpose vehicle offered in 2 EPA-rated configurations. The most efficient version returns 17 MPG combined (15 city / 20 highway) on diesel. Across the lineup, combined ratings range from 16 to 17 MPG. Efficiency is unchanged from the 1990 model. Among 45 special purpose vehicles rated for 1991, it ranks 32nd for lowest fuel cost. At 15,000 miles a year with $3.70/gal diesel fuel, it costs about $3,265 a year to fuel.
What will it cost you?
Your mileage and prices are saved and used across the site.
Fuel average
The 1991 GMC Suburban Diesel's fuel average is 7.2 km/L (13.8 L/100 km), or 17 MPG combined: 6.4 km/L in the city and 8.5 km/L on the highway.
| MPG | km/L | L/100 km | |
|---|---|---|---|
| City | 15 | 6.4 | 15.7 |
| Highway | 20 | 8.5 | 11.8 |
| Combined | 17 | 7.2 | 13.8 |
How it ranks among 1991 Special Purpose Vehicles
Full class ranking →Annual fuel cost at 15,000 miles and default prices; shorter bars cost less.
Suburban Diesel MPG across model years
Full history →2 EPA-rated configurations
| Configuration | Type | City | Hwy | Combined | Range | Your cost / yr |
|---|---|---|---|---|---|---|
| RWD · 6.2L 8-cyl · 4-speed automatic R1500 Suburban 2WD |
Diesel | 15 MPG | 20 MPG | 17 MPG | — | $3,265 |
| 4WD/AWD · 6.2L 8-cyl · 4-speed automatic Suburban V1500 4WD |
Diesel | 14 MPG | 20 MPG | 16 MPG | — | $3,469 |
Specs (most efficient configuration)
- Fuel
- Diesel
- Engine / motor
- 6.2L 8-cyl
- Transmission
- 4-speed automatic
- Drivetrain
- RWD
- Tailpipe CO₂
- 599 g/mi
1991 GMC Suburban Diesel vs. rivals
Compare the 1991 Suburban Diesel
With any other car from any year, including other Suburban Diesel model years. Type a year to jump, e.g. "2015 Accord".
Same year, other powertrains: 1991 GMC Suburban (13 MPG)
Frequently asked questions
What is the gas mileage of the 1991 GMC Suburban Diesel?
Up to 17 MPG combined (15 city / 20 highway); ratings range from 16 to 17 MPG depending on configuration.
What fuel does the 1991 GMC Suburban Diesel use?
Diesel.
What is the fuel average in km/L for the 1991 GMC Suburban Diesel?
The 1991 GMC Suburban Diesel's fuel average is 7.2 km/L (13.8 L/100 km), or 17 MPG combined: 6.4 km/L in the city and 8.5 km/L on the highway.
How much does it cost to fuel the 1991 GMC Suburban Diesel per year?
About $3,265 at 15,000 miles a year with $3.70/gal diesel fuel, or $21.76 per 100 miles. Use the calculator on this page to plug in your own mileage and prices.