1985 GMC G15/25 Rally 2WD MPG and Fuel Economy
On this page, you will find a complete guide to the miles per gallon and fuel efficiency data for the 1985 GMC G15/25 Rally 2WD.
The 1985 GMC G15/25 Rally 2WD has 12 model options: Automatic 3-spd 6-cyl, 4.3 L, Automatic 4-spd 6-cyl, 4.3 L, Manual 3-spd 6-cyl, 4.3 L, Automatic 3-spd 8-cyl, 5.0 L, Automatic 4-spd 8-cyl, 5.0 L, Automatic 4-spd 8-cyl, 5.7 L, Automatic 4-spd 8-cyl, 6.2 L, Manual 4-spd 8-cyl, 6.2 L, Automatic 4-spd 6-cyl, 4.3 L, Manual 3-spd 6-cyl, 4.3 L, Automatic 4-spd 8-cyl, 5.7 L and Automatic 4-spd 8-cyl, 6.2 L.
The 1985 GMC G15/25 Rally 2WD Automatic 3-spd 6-cyl, 4.3 L runs on regular gasoline and is in the Vans car class.
The 1985 GMC G15/25 Rally 2WD Automatic 4-spd 6-cyl, 4.3 L runs on regular gasoline and is in the Vans car class.
The 1985 GMC G15/25 Rally 2WD Manual 3-spd 6-cyl, 4.3 L runs on regular gasoline and is in the Vans car class.
The 1985 GMC G15/25 Rally 2WD Automatic 3-spd 8-cyl, 5.0 L runs on regular gasoline and is in the Vans car class.
The 1985 GMC G15/25 Rally 2WD Automatic 4-spd 8-cyl, 5.0 L runs on regular gasoline and is in the Vans car class.
The 1985 GMC G15/25 Rally 2WD Automatic 4-spd 8-cyl, 5.7 L runs on regular gasoline and is in the Vans car class.
The 1985 GMC G15/25 Rally 2WD Automatic 4-spd 8-cyl, 6.2 L runs on diesel and is in the Vans car class.
The 1985 GMC G15/25 Rally 2WD Manual 4-spd 8-cyl, 6.2 L runs on diesel and is in the Vans car class.
The 1985 GMC G15/25 Rally 2WD Automatic 4-spd 6-cyl, 4.3 L runs on regular gasoline and is in the Vans car class.
The 1985 GMC G15/25 Rally 2WD Manual 3-spd 6-cyl, 4.3 L runs on regular gasoline and is in the Vans car class.
The 1985 GMC G15/25 Rally 2WD Automatic 4-spd 8-cyl, 5.7 L runs on regular gasoline and is in the Vans car class.
The 1985 GMC G15/25 Rally 2WD Automatic 4-spd 8-cyl, 6.2 L runs on diesel and is in the Vans car class.
🛣 How Many Miles per Gallon (MPG) Does a 1985 GMC G15/25 Rally 2WD Get?
Across all models, the combined average MPG for the 1985 GMC G15/25 Rally 2WD is 15 miles per gallon.
The table below breaks down the MPG for each model option:
| Model Option | Combined MPG | City MPG | Highway MPG |
|---|---|---|---|
| Automatic 3-spd 6-cyl, 4.3 L | 15 | 14 | 16 |
| Automatic 4-spd 6-cyl, 4.3 L | 16 | 15 | 17 |
| Manual 3-spd 6-cyl, 4.3 L | 15 | 14 | 17 |
| Automatic 3-spd 8-cyl, 5.0 L | 12 | 11 | 12 |
| Automatic 4-spd 8-cyl, 5.0 L | 14 | 12 | 16 |
| Automatic 4-spd 8-cyl, 5.7 L | 13 | 11 | 16 |
| Automatic 4-spd 8-cyl, 6.2 L | 18 | 15 | 22 |
| Manual 4-spd 8-cyl, 6.2 L | 17 | 16 | 19 |
| Automatic 4-spd 6-cyl, 4.3 L | 15 | 14 | 16 |
| Manual 3-spd 6-cyl, 4.3 L | 14 | 13 | 16 |
| Automatic 4-spd 8-cyl, 5.7 L | 12 | 11 | 15 |
| Automatic 4-spd 8-cyl, 6.2 L | 18 | 15 | 22 |
💵 What is the Average Yearly Fuel Cost for a 1985 GMC G15/25 Rally 2WD?
The average fuel costs for all models of the 1985 GMC G15/25 Rally 2WD is $4,467.
The average fuel costs have been estimated by government regulators based on 15,000 miles driven per year, using regular gasoline, and a split of 55% city driving and 45% highway driving.
Comparing a 1985 GMC G15/25 Rally 2WD to an average vehicle over 5 years, you will spend $10,833 more on fuel.
The table below shows the fuel costs and 5-year save/spend for each model option:
| Model Option | Fuel Cost | 5-Year Save/Spend |
|---|---|---|
| Automatic 3-spd 6-cyl, 4.3 L | $4,150 | spend $9,250 more |
| Automatic 4-spd 6-cyl, 4.3 L | $3,900 | spend $8,000 more |
| Manual 3-spd 6-cyl, 4.3 L | $4,150 | spend $9,250 more |
| Automatic 3-spd 8-cyl, 5.0 L | $5,200 | spend $14,500 more |
| Automatic 4-spd 8-cyl, 5.0 L | $4,450 | spend $10,750 more |
| Automatic 4-spd 8-cyl, 5.7 L | $4,800 | spend $12,500 more |
| Automatic 4-spd 8-cyl, 6.2 L | $4,300 | spend $10,000 more |
| Manual 4-spd 8-cyl, 6.2 L | $4,550 | spend $11,250 more |
| Automatic 4-spd 6-cyl, 4.3 L | $4,150 | spend $9,250 more |
| Manual 3-spd 6-cyl, 4.3 L | $4,450 | spend $10,750 more |
| Automatic 4-spd 8-cyl, 5.7 L | $5,200 | spend $14,500 more |
| Automatic 4-spd 8-cyl, 6.2 L | $4,300 | spend $10,000 more |
🛢 How Many Barrels of Petroleum Does a 1985 GMC G15/25 Rally 2WD Consume?
Across all models, the average number barrels of petroleum that the 1985 GMC G15/25 Rally 2WD will consume in one year is 21 barrels.
The majority of the world's petroleum is sourced from countries like Saudi Arabia, Russia, Iraq, and the United States.
| Model Option | Barrels |
|---|---|
| Automatic 3-spd 6-cyl, 4.3 L | 20 |
| Automatic 4-spd 6-cyl, 4.3 L | 19 |
| Manual 3-spd 6-cyl, 4.3 L | 20 |
| Automatic 3-spd 8-cyl, 5.0 L | 25 |
| Automatic 4-spd 8-cyl, 5.0 L | 21 |
| Automatic 4-spd 8-cyl, 5.7 L | 23 |
| Automatic 4-spd 8-cyl, 6.2 L | 20 |
| Manual 4-spd 8-cyl, 6.2 L | 21 |
| Automatic 4-spd 6-cyl, 4.3 L | 20 |
| Manual 3-spd 6-cyl, 4.3 L | 21 |
| Automatic 4-spd 8-cyl, 5.7 L | 25 |
| Automatic 4-spd 8-cyl, 6.2 L | 20 |
💨 How Many Grams of CO2 Does a 1985 GMC G15/25 Rally 2WD Emit?
The 1985 GMC G15/25 Rally 2WD will emit an average of about -15,000 grams of CO2 per year.
🌳 To help you understand the impact of this, a normal tree will absorb around 21,000 grams of CO2 per year. This means that roughly 1 tree would be needed to offset emissions from the 1985 GMC G15/25 Rally 2WD.
Overview
The tables below cover all of the miles per gallon, engine specifications, and emission details we have for the 12 1985 GMC G15/25 Rally 2WD model options.
Automatic 3-spd 6-cyl, 4.3 L
The table below contains all of the details we have for the 1985 GMC G15/25 Rally 2WD Automatic 3-spd 6-cyl, 4.3 L:
| City MPG | 14 |
|---|---|
| Highway MPG | 16 |
| Combined MPG | 15 |
| Save/Spend vs Average Car | Spend $9,250 |
| Fuel Cost | $4,150 |
| Fuel Type 1 | Regular |
| Barrels of Petroleum | 20 |
| Grams of CO2 | -15,000 |
| Trees Needed to Offset | -1 |
| Drive | Rear-Wheel Drive |
| Cylinders | 6 |
| Displacement | 4.3 |
| Transmission | Automatic 3-spd |
| Vehicle Class | Vans |
| Start/Stop? | No |
| Supercharged? | No |
| Turbocharged? | No |
Automatic 4-spd 6-cyl, 4.3 L
The table below contains all of the details we have for the 1985 GMC G15/25 Rally 2WD Automatic 4-spd 6-cyl, 4.3 L:
| City MPG | 15 |
|---|---|
| Highway MPG | 17 |
| Combined MPG | 16 |
| Save/Spend vs Average Car | Spend $8,000 |
| Fuel Cost | $3,900 |
| Fuel Type 1 | Regular |
| Barrels of Petroleum | 19 |
| Grams of CO2 | -15,000 |
| Trees Needed to Offset | -1 |
| Drive | Rear-Wheel Drive |
| Cylinders | 6 |
| Displacement | 4.3 |
| Transmission | Automatic 4-spd |
| Vehicle Class | Vans |
| Start/Stop? | No |
| Supercharged? | No |
| Turbocharged? | No |
Manual 3-spd 6-cyl, 4.3 L
The table below contains all of the details we have for the 1985 GMC G15/25 Rally 2WD Manual 3-spd 6-cyl, 4.3 L:
| City MPG | 14 |
|---|---|
| Highway MPG | 17 |
| Combined MPG | 15 |
| Save/Spend vs Average Car | Spend $9,250 |
| Fuel Cost | $4,150 |
| Fuel Type 1 | Regular |
| Barrels of Petroleum | 20 |
| Grams of CO2 | -15,000 |
| Trees Needed to Offset | -1 |
| Drive | Rear-Wheel Drive |
| Cylinders | 6 |
| Displacement | 4.3 |
| Transmission | Manual 3-spd |
| Vehicle Class | Vans |
| Start/Stop? | No |
| Supercharged? | No |
| Turbocharged? | No |
Automatic 3-spd 8-cyl, 5.0 L
The table below contains all of the details we have for the 1985 GMC G15/25 Rally 2WD Automatic 3-spd 8-cyl, 5.0 L:
| City MPG | 11 |
|---|---|
| Highway MPG | 12 |
| Combined MPG | 12 |
| Save/Spend vs Average Car | Spend $14,500 |
| Fuel Cost | $5,200 |
| Fuel Type 1 | Regular |
| Barrels of Petroleum | 25 |
| Grams of CO2 | -15,000 |
| Trees Needed to Offset | -1 |
| Drive | Rear-Wheel Drive |
| Cylinders | 8 |
| Displacement | 5 |
| Transmission | Automatic 3-spd |
| Vehicle Class | Vans |
| Start/Stop? | No |
| Supercharged? | No |
| Turbocharged? | No |
Automatic 4-spd 8-cyl, 5.0 L
The table below contains all of the details we have for the 1985 GMC G15/25 Rally 2WD Automatic 4-spd 8-cyl, 5.0 L:
| City MPG | 12 |
|---|---|
| Highway MPG | 16 |
| Combined MPG | 14 |
| Save/Spend vs Average Car | Spend $10,750 |
| Fuel Cost | $4,450 |
| Fuel Type 1 | Regular |
| Barrels of Petroleum | 21 |
| Grams of CO2 | -15,000 |
| Trees Needed to Offset | -1 |
| Drive | Rear-Wheel Drive |
| Cylinders | 8 |
| Displacement | 5 |
| Transmission | Automatic 4-spd |
| Vehicle Class | Vans |
| Start/Stop? | No |
| Supercharged? | No |
| Turbocharged? | No |
Automatic 4-spd 8-cyl, 5.7 L
The table below contains all of the details we have for the 1985 GMC G15/25 Rally 2WD Automatic 4-spd 8-cyl, 5.7 L:
| City MPG | 11 |
|---|---|
| Highway MPG | 16 |
| Combined MPG | 13 |
| Save/Spend vs Average Car | Spend $12,500 |
| Fuel Cost | $4,800 |
| Fuel Type 1 | Regular |
| Barrels of Petroleum | 23 |
| Grams of CO2 | -15,000 |
| Trees Needed to Offset | -1 |
| Drive | Rear-Wheel Drive |
| Cylinders | 8 |
| Displacement | 5.7 |
| Transmission | Automatic 4-spd |
| Vehicle Class | Vans |
| Start/Stop? | No |
| Supercharged? | No |
| Turbocharged? | No |
Automatic 4-spd 8-cyl, 6.2 L
The table below contains all of the details we have for the 1985 GMC G15/25 Rally 2WD Automatic 4-spd 8-cyl, 6.2 L:
| City MPG | 15 |
|---|---|
| Highway MPG | 22 |
| Combined MPG | 18 |
| Save/Spend vs Average Car | Spend $10,000 |
| Fuel Cost | $4,300 |
| Fuel Type 1 | Diesel |
| ATV Type | Diesel |
| Barrels of Petroleum | 20 |
| Grams of CO2 | -15,000 |
| Trees Needed to Offset | -1 |
| Drive | Rear-Wheel Drive |
| Cylinders | 8 |
| Displacement | 6.2 |
| Transmission | Automatic 4-spd |
| Vehicle Class | Vans |
| Start/Stop? | No |
| Supercharged? | No |
| Turbocharged? | No |
Manual 4-spd 8-cyl, 6.2 L
The table below contains all of the details we have for the 1985 GMC G15/25 Rally 2WD Manual 4-spd 8-cyl, 6.2 L:
| City MPG | 16 |
|---|---|
| Highway MPG | 19 |
| Combined MPG | 17 |
| Save/Spend vs Average Car | Spend $11,250 |
| Fuel Cost | $4,550 |
| Fuel Type 1 | Diesel |
| ATV Type | Diesel |
| Barrels of Petroleum | 21 |
| Grams of CO2 | -15,000 |
| Trees Needed to Offset | -1 |
| Drive | Rear-Wheel Drive |
| Cylinders | 8 |
| Displacement | 6.2 |
| Transmission | Manual 4-spd |
| Vehicle Class | Vans |
| Start/Stop? | No |
| Supercharged? | No |
| Turbocharged? | No |
Automatic 4-spd 6-cyl, 4.3 L
The table below contains all of the details we have for the 1985 GMC G15/25 Rally 2WD Automatic 4-spd 6-cyl, 4.3 L:
| City MPG | 14 |
|---|---|
| Highway MPG | 16 |
| Combined MPG | 15 |
| Save/Spend vs Average Car | Spend $9,250 |
| Fuel Cost | $4,150 |
| Fuel Type 1 | Regular |
| Barrels of Petroleum | 20 |
| Grams of CO2 | -15,000 |
| Trees Needed to Offset | -1 |
| Drive | Rear-Wheel Drive |
| Cylinders | 6 |
| Displacement | 4.3 |
| Transmission | Automatic 4-spd |
| Vehicle Class | Vans |
| Start/Stop? | No |
| Supercharged? | No |
| Turbocharged? | No |
Manual 3-spd 6-cyl, 4.3 L
The table below contains all of the details we have for the 1985 GMC G15/25 Rally 2WD Manual 3-spd 6-cyl, 4.3 L:
| City MPG | 13 |
|---|---|
| Highway MPG | 16 |
| Combined MPG | 14 |
| Save/Spend vs Average Car | Spend $10,750 |
| Fuel Cost | $4,450 |
| Fuel Type 1 | Regular |
| Barrels of Petroleum | 21 |
| Grams of CO2 | -15,000 |
| Trees Needed to Offset | -1 |
| Drive | Rear-Wheel Drive |
| Cylinders | 6 |
| Displacement | 4.3 |
| Transmission | Manual 3-spd |
| Vehicle Class | Vans |
| Start/Stop? | No |
| Supercharged? | No |
| Turbocharged? | No |
Automatic 4-spd 8-cyl, 5.7 L
The table below contains all of the details we have for the 1985 GMC G15/25 Rally 2WD Automatic 4-spd 8-cyl, 5.7 L:
| City MPG | 11 |
|---|---|
| Highway MPG | 15 |
| Combined MPG | 12 |
| Save/Spend vs Average Car | Spend $14,500 |
| Fuel Cost | $5,200 |
| Fuel Type 1 | Regular |
| Barrels of Petroleum | 25 |
| Grams of CO2 | -15,000 |
| Trees Needed to Offset | -1 |
| Drive | Rear-Wheel Drive |
| Cylinders | 8 |
| Displacement | 5.7 |
| Transmission | Automatic 4-spd |
| Vehicle Class | Vans |
| Start/Stop? | No |
| Supercharged? | No |
| Turbocharged? | No |
Automatic 4-spd 8-cyl, 6.2 L
The table below contains all of the details we have for the 1985 GMC G15/25 Rally 2WD Automatic 4-spd 8-cyl, 6.2 L:
| City MPG | 15 |
|---|---|
| Highway MPG | 22 |
| Combined MPG | 18 |
| Save/Spend vs Average Car | Spend $10,000 |
| Fuel Cost | $4,300 |
| Fuel Type 1 | Diesel |
| ATV Type | Diesel |
| Barrels of Petroleum | 20 |
| Grams of CO2 | -15,000 |
| Trees Needed to Offset | -1 |
| Drive | Rear-Wheel Drive |
| Cylinders | 8 |
| Displacement | 6.2 |
| Transmission | Automatic 4-spd |
| Vehicle Class | Vans |
| Start/Stop? | No |
| Supercharged? | No |
| Turbocharged? | No |
Link To or Reference This Page
If you use this page in your research, please reference MPG Buddy as the source.
<a href="https://mpgbuddy.com/cars/gmc/g15-25-rally-2wd/1985">1985 GMC G15/25 Rally 2WD MPG and Fuel Economy</a>
"1985 GMC G15/25 Rally 2WD MPG and Fuel Economy." MPG Buddy. Accessed on January 3, 2026. https://mpgbuddy.com/cars/gmc/g15-25-rally-2wd/1985.
"1985 GMC G15/25 Rally 2WD MPG and Fuel Economy." MPG Buddy, https://mpgbuddy.com/cars/gmc/g15-25-rally-2wd/1985. Accessed January 3, 2026.
1985 GMC G15/25 Rally 2WD MPG and Fuel Economy. MPG Buddy. Retrieved from https://mpgbuddy.com/cars/gmc/g15-25-rally-2wd/1985.