What is the gas mileage on a 1980 Chevy C10?
In general, a 1980 Chevy C10 does not have a single universal mpg figure. Depending on engine, transmission, gearing, and payload, most trucks of that era achieved roughly 12–18 miles per gallon in city driving and about 16–22 mpg on the highway.
Context: Why the numbers vary on a vintage pickup
Fuel economy in 1980s full‑size GM pickups depended on several factors that modern cars often standardize away. Different engines and transmissions, rear axle ratios, weight from options or payload, and overall vehicle condition all shaped efficiency. As a result, two C10s from the same year could show noticeably different mileage in real-world use.
Powertrain options and their typical mpg
The following outlines common configurations seen in 1980 C10 pickups and how they influence efficiency.
- 350 cu in (5.7 L) V8 with automatic transmission: roughly 12–15 mpg city and 17–20 mpg highway, depending on gearing and payload.
- 305 cu in (5.0 L) V8 with automatic transmission: roughly 13–16 mpg city and 18–21 mpg highway.
- Inline-six base engine (approximately 4.1–4.3 L) with manual or automatic: roughly 15–18 mpg city and 20–23 mpg highway, depending on gearing and load.
Note: These are approximate ranges based on typical configurations and owner reports from the era. Actual mileage for a specific truck will vary with maintenance, tire size, axle ratio, and how the vehicle was driven.
Additional factors that affect fuel economy
To understand a specific 1980 C10's mpg, consider engine size, axle ratio, vehicle weight, payload, and drivetrain condition. Heavier payloads and higher gearing generally reduce efficiency, while proper maintenance, correct tire inflation, and moderate driving can improve it.
How to estimate for one you own or inspect
For an informed estimate, log fuel purchases and miles driven over a tank or two, then compute miles per gallon: MPG = miles driven ÷ gallons used. Compare to the ranges above to gauge how your truck stacks up. If the truck is factory original, the original window sticker can provide the exact rating.
Summary
A 1980 Chevy C10 does not have a single universal mpg figure. Its fuel economy varied with engine choice, transmission, axle ratio, and payload. In general, expect around 12–16 mpg in city driving and 17–22 mpg on the highway for typical V8 configurations, with inline-six setups potentially achieving a bit better highway efficiency. Real-world numbers depend on the specific truck and its condition.
