1984 GMC K25 Pickup 4WD MPG and Fuel Economy
On this page, you will find a complete guide to the miles per gallon and fuel efficiency data for the 1984 GMC K25 Pickup 4WD.
The 1984 GMC K25 Pickup 4WD has 5 model options: Automatic 4-spd 8-cyl, 5.7 L, Manual 4-spd 8-cyl, 5.7 L, Automatic 4-spd 8-cyl, 6.2 L, Manual 4-spd 8-cyl, 6.2 L and Manual 4-spd 8-cyl, 6.2 L.
The 1984 GMC K25 Pickup 4WD Automatic 4-spd 8-cyl, 5.7 L runs on regular gasoline and is in the Standard Pickup Trucks 4WD car class.
The 1984 GMC K25 Pickup 4WD Manual 4-spd 8-cyl, 5.7 L runs on regular gasoline and is in the Standard Pickup Trucks 4WD car class.
The 1984 GMC K25 Pickup 4WD Automatic 4-spd 8-cyl, 6.2 L runs on diesel and is in the Standard Pickup Trucks 4WD car class.
The 1984 GMC K25 Pickup 4WD Manual 4-spd 8-cyl, 6.2 L runs on diesel and is in the Standard Pickup Trucks 4WD car class.
The 1984 GMC K25 Pickup 4WD Manual 4-spd 8-cyl, 6.2 L runs on diesel and is in the Standard Pickup Trucks 4WD car class.
🛣 How Many Miles per Gallon (MPG) Does a 1984 GMC K25 Pickup 4WD Get?
Across all models, the combined average MPG for the 1984 GMC K25 Pickup 4WD 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 4-spd 8-cyl, 5.7 L | 12 | 11 | 15 |
| Manual 4-spd 8-cyl, 5.7 L | 12 | 11 | 13 |
| Automatic 4-spd 8-cyl, 6.2 L | 18 | 16 | 20 |
| Manual 4-spd 8-cyl, 6.2 L | 18 | 17 | 20 |
| Manual 4-spd 8-cyl, 6.2 L | 17 | 16 | 18 |
💵 What is the Average Yearly Fuel Cost for a 1984 GMC K25 Pickup 4WD?
The average fuel costs for all models of the 1984 GMC K25 Pickup 4WD is $4,710.
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 1984 GMC K25 Pickup 4WD to an average vehicle over 5 years, you will spend $12,050 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 4-spd 8-cyl, 5.7 L | $5,200 | spend $14,500 more |
| Manual 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 |
| Manual 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 |
🛢 How Many Barrels of Petroleum Does a 1984 GMC K25 Pickup 4WD Consume?
Across all models, the average number barrels of petroleum that the 1984 GMC K25 Pickup 4WD will consume in one year is 22 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 4-spd 8-cyl, 5.7 L | 25 |
| Manual 4-spd 8-cyl, 5.7 L | 25 |
| Automatic 4-spd 8-cyl, 6.2 L | 20 |
| Manual 4-spd 8-cyl, 6.2 L | 20 |
| Manual 4-spd 8-cyl, 6.2 L | 21 |
💨 How Many Grams of CO2 Does a 1984 GMC K25 Pickup 4WD Emit?
The 1984 GMC K25 Pickup 4WD 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 1984 GMC K25 Pickup 4WD.
Overview
The tables below cover all of the miles per gallon, engine specifications, and emission details we have for the 5 1984 GMC K25 Pickup 4WD model options.
Automatic 4-spd 8-cyl, 5.7 L
The table below contains all of the details we have for the 1984 GMC K25 Pickup 4WD 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 | 4-Wheel or All-Wheel Drive |
| Cylinders | 8 |
| Displacement | 5.7 |
| Transmission | Automatic 4-spd |
| Vehicle Class | Standard Pickup Trucks 4WD |
| Start/Stop? | No |
| Supercharged? | No |
| Turbocharged? | No |
Manual 4-spd 8-cyl, 5.7 L
The table below contains all of the details we have for the 1984 GMC K25 Pickup 4WD Manual 4-spd 8-cyl, 5.7 L:
| City MPG | 11 |
|---|---|
| Highway MPG | 13 |
| 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 | 4-Wheel or All-Wheel Drive |
| Cylinders | 8 |
| Displacement | 5.7 |
| Transmission | Manual 4-spd |
| Vehicle Class | Standard Pickup Trucks 4WD |
| 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 1984 GMC K25 Pickup 4WD Automatic 4-spd 8-cyl, 6.2 L:
| City MPG | 16 |
|---|---|
| Highway MPG | 20 |
| 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 | 4-Wheel or All-Wheel Drive |
| Cylinders | 8 |
| Displacement | 6.2 |
| Transmission | Automatic 4-spd |
| Vehicle Class | Standard Pickup Trucks 4WD |
| 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 1984 GMC K25 Pickup 4WD Manual 4-spd 8-cyl, 6.2 L:
| City MPG | 17 |
|---|---|
| Highway MPG | 20 |
| 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 | 4-Wheel or All-Wheel Drive |
| Cylinders | 8 |
| Displacement | 6.2 |
| Transmission | Manual 4-spd |
| Vehicle Class | Standard Pickup Trucks 4WD |
| 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 1984 GMC K25 Pickup 4WD Manual 4-spd 8-cyl, 6.2 L:
| City MPG | 16 |
|---|---|
| Highway MPG | 18 |
| 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 | 4-Wheel or All-Wheel Drive |
| Cylinders | 8 |
| Displacement | 6.2 |
| Transmission | Manual 4-spd |
| Vehicle Class | Standard Pickup Trucks 4WD |
| 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/k25-pickup-4wd/1984">1984 GMC K25 Pickup 4WD MPG and Fuel Economy</a>
"1984 GMC K25 Pickup 4WD MPG and Fuel Economy." MPG Buddy. Accessed on January 3, 2026. https://mpgbuddy.com/cars/gmc/k25-pickup-4wd/1984.
"1984 GMC K25 Pickup 4WD MPG and Fuel Economy." MPG Buddy, https://mpgbuddy.com/cars/gmc/k25-pickup-4wd/1984. Accessed January 3, 2026.
1984 GMC K25 Pickup 4WD MPG and Fuel Economy. MPG Buddy. Retrieved from https://mpgbuddy.com/cars/gmc/k25-pickup-4wd/1984.