1990 · Van · Diesel
1990 GMC Rally Diesel MPG & fuel economy
The 1990 GMC Rally Diesel is a van with one EPA-rated configuration. The most efficient version returns 17 MPG combined (15 city / 20 highway) on diesel. That's down 1 MPG from the 1989 model. Among 25 vans rated for 1990, it ranks 19th 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 1990 GMC Rally 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 1990 Vans
Full class ranking →Annual fuel cost at 15,000 miles and default prices; shorter bars cost less.
Rally Diesel MPG across model years
Full history →1 EPA-rated configuration
| Configuration | Type | City | Hwy | Combined | Range | Your cost / yr |
|---|---|---|---|---|---|---|
| RWD · 6.2L 8-cyl · 4-speed automatic G15/25 Rally 2WD |
Diesel | 15 MPG | 20 MPG | 17 MPG | — | $3,265 |
Specs (most efficient configuration)
- Fuel
- Diesel
- Engine / motor
- 6.2L 8-cyl
- Transmission
- 4-speed automatic
- Drivetrain
- RWD
- Tailpipe CO₂
- 599 g/mi
1990 GMC Rally Diesel vs. rivals
Compare the 1990 Rally Diesel
With any other car from any year, including other Rally Diesel model years. Type a year to jump, e.g. "2015 Accord".
Same year, other powertrains: 1990 GMC Rally (16 MPG)
Frequently asked questions
What is the gas mileage of the 1990 GMC Rally Diesel?
Up to 17 MPG combined (15 city / 20 highway).
What fuel does the 1990 GMC Rally Diesel use?
Diesel.
What is the fuel average in km/L for the 1990 GMC Rally Diesel?
The 1990 GMC Rally 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 1990 GMC Rally 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.