How many miles per gallon does a 1979 Chevy truck get?
Most 1979 Chevy pickups averaged roughly 12–18 miles per gallon overall, with 2WD configurations tending toward the upper end and 4x4 versions toward the lower end.
The 1979 model year covered a range of C/K pickups with multiple engine and drivetrain options, so there isn't a single MPG figure. The following article outlines typical real-world ranges and the factors that influence them, including engine size, drivetrain, gearing, and weight.
What affects MPG on a 1979 Chevy truck
Fuel economy in these vintage trucks is shaped by engine displacement, whether the vehicle is 2WD or 4x4, the type of transmission, and how well the truck is maintained. In the late 1970s, factory ratings were not as optimistic as modern standards, and driving style, payload, tires, and tune-up condition had a large impact on the numbers drivers actually saw.
Typical configurations and their expected ranges
The following sections summarize common configurations from that era and the typical mpg ranges you might expect in everyday driving.
Two-wheel drive (2WD) with a V8
Most 2WD pickups used a small- to mid-size V8 and manual or automatic transmission, offering a balance of power and efficiency.
- Real-world fuel economy for this setup is typically in the low to mid-teens in mixed driving, with highway figures often in the upper teens to around 20 mpg under light load and steady cruising.
Conclusion for 2WD V8: In practice, these trucks commonly deliver roughly 12–16 mpg in mixed driving, with highway efficiency approaching 18–20 mpg under favorable conditions.
Two-wheel drive (2WD) with a six-cylinder
Six-cylinder configurations tended to be slightly more fuel-efficient than V8s, given similar gearing.
- For the 2WD six-cylinder setup, expect roughly mid-teens on average, with highway economy sometimes reaching the low to mid-20s depending on gearing and load.
Conclusion for 2WD six-cylinder: Real-world mixed driving often lands in the 14–18 mpg range, with highway numbers occasionally surpassing 20 mpg in optimal conditions.
Four-wheel drive (4x4) versions
Adding four-wheel drive increased drivetrain losses and weight, typically reducing mpg compared with 2WD counterparts.
- 4x4 configurations commonly fall into the low end of the spectrum, roughly 10–14 mpg in mixed driving, with highway numbers generally in the 14–18 mpg range when conditions are favorable.
Conclusion for 4x4: In day-to-day use, 4x4 Chevys from 1979 often averaged about 10–14 mpg mixed, with highway runs occasionally approaching 18 mpg under light loads.
Maintenance and driving habits that can influence these numbers
Keeping the carburetor tuned, ignition timing correct, tires inflated to the recommended pressure, removing excess weight, and practicing smooth acceleration can all help a vintage Chevy pickup achieve the best possible economy for its era.
- Keep tires properly inflated and aligned to reduce rolling resistance.
- Perform regular tune-ups including spark plugs, ignition timing, and carburetor adjustments.
- Lighten the load and remove unnecessary accessories that add weight or drag.
- Drive with steady throttle, gradual acceleration, and moderate cruising speeds.
- Upgrade to efficient tires with low rolling resistance, if you are restoring a vehicle for daily driving.
Practical steps like these won't turn a 1979 Chevy into a modern economy car, but they can help you get the best possible mileage from a classic truck.
Summary
In summary, a 1979 Chevy truck's MPG varies by configuration. 2WD V8 versions typically deliver roughly 12–16 mpg mixed driving, with highway numbers near 18–20 mpg under good conditions. 2WD six-cylinders tend to be a touch more efficient, often in the 14–18 mpg range combined, while 4x4 models commonly fall in the 10–14 mpg range mixed. Real-world results are influenced by maintenance, payload, driving style, and environmental factors.
For historical context, these figures reflect era-typical testing and real-world experiences from owners and period reviews, not a single standardized rating for all trucks from 1979.
What engines were available in the 1979 Chevy truck?
Chevrolet C/K (third generation)
| Third generation | |
|---|---|
| Engine | 250 cu in (4.1 L) I6 292 cu in (4.8 L) I6 262 cu in (4.3 L) V6 305 cu in (5.0 L) V8 307 cu in (5.0 L) V8 350 cu in (5.7 L) V8 366 cu in (6.0 L) V8 400 cu in (6.6 L) V8 454 cu in (7.4 L) V8 350 cu in (5.7 L) Oldsmobile Diesel V8 379 cu in (6.2 L) Detroit Diesel V8 |
How many miles does a Chevy truck get per gallon?
Chevy truck MPG varies significantly by model, year, and engine, but some recent models get up to an estimated 23 mpg city/29 mpg highway for a gasoline engine and 23 mpg city/33 mpg highway for a diesel engine. Other factors that affect MPG include drivetrain (2WD vs. 4WD) and tire type, such as mud-terrain tires, which reduce fuel efficiency.
This video explains the fuel economy of the Chevy Silverado 1500 diesel engine: 51sGetty's GarageYouTube · Jul 23, 2025
2024 Chevy Silverado 1500 (Example ratings)
- 2.7L Turbo Engine:
- 2WD: 18 mpg city / 22 mpg highway
- 4WD: 18 mpg city / 21 mpg highway
- 5.3L V8 Engine:
- 2WD: 16 mpg city / 22 mpg highway
- 4WD: 15 mpg city / 20 mpg highway
- 3.0L Duramax Diesel Engine:
- 2WD: 23 mpg city / 29 mpg highway
- 4WD: 23 mpg city / 27 mpg highway
- Trail Boss (4WD, gasoline engine):
- 17 mpg city / 18 mpg highway
- Note: Ratings decrease with mud-terrain tires.
Factors that influence MPG
- Engine and drivetrain: The specific engine and whether the truck is 2-wheel or 4-wheel drive are major factors in fuel economy.
- Tire type: Off-road or mud-terrain tires can significantly lower a truck's MPG.
- Configuration: Bed and cab size can impact efficiency.
- Maintenance: Keeping up with oil changes and filter replacements can help maintain optimal fuel efficiency.
What is the gas mileage on a 1974 Chevy C10?
It should get 10-12 mpg.
How much is a 1979 Chevy C10 worth today?
A 1979 Chevy C10's value varies significantly based on condition, with prices for average models in good condition ranging from around $11,000 to $25,400, but exceptional examples can reach well over $50,000. The highest price paid at auction in recent years was $66,000 for an exceptional example, while lower-priced trucks can be found for under $11,000 if they need significant work. Factors like mileage, options, engine, and overall history play a large role in the final value.
Factors influencing value
- Condition: This is the most significant factor. A perfectly restored or a very well-maintained truck will be worth far more than one with rust, extensive wear, or poor modifications.
- Mileage: Lower mileage generally means higher value.
- Engine and options: Certain engines and factory options, especially rarer ones, can increase value.
- History: A truck with a documented history, especially one without accidents or title issues, will be worth more.
Price breakdown
- Average Condition: Expect to pay approximately $11,000 to $25,400 for a C10 in good condition with average specifications.
- High Condition: Excellent examples can command prices over $46,100.
- Top-tier: Some rare or exceptionally well-maintained trucks have sold for up to $66,000 at auction.
- Lower Condition: Trucks with significant maintenance needs or damage can be purchased for under $11,000.
