What is the gas mileage on a 1991 Ford Ranger 4.0 V6?
Expect roughly 18–20 mpg overall, with about 22–23 mpg on the highway for two-wheel-drive models; four-wheel-drive variants typically run about 2–3 mpg lower overall.
EPA-era estimates by drivetrain
These figures reflect typical EPA-era ranges reported for the 4.0-liter V6 Ranger in 1991. Actual results depend on transmission, maintenance, and driving conditions, and real-world results can vary widely.
- 2WD with automatic transmission: approximately 18–19 mpg city and 22–23 mpg highway.
- 2WD with manual transmission: approximately 19–21 mpg city and 23–24 mpg highway.
- 4x4 with automatic transmission: approximately 16–17 mpg city and 21–22 mpg highway.
- 4x4 with manual transmission: approximately 17–18 mpg city and 22–23 mpg highway.
These ranges illustrate how drivetrain and transmission influence efficiency. Individual vehicles may vary based on condition, load, and driving style.
Real-world factors that affect fuel economy
Beyond drivetrain configuration, several practical factors can push actual mileage higher or lower than the vintage EPA estimates. The following considerations commonly affect a 1991 Ranger’s fuel economy today.
- Engine and transmission health, including spark plugs, ignition timing, and fuel delivery systems.
- Tire choice, pressure, and alignment, which can significantly impact rolling resistance.
- Driving habits, such as frequent stops, rapid acceleration, and highway speeds.
- Payload, towing loads, and overall vehicle weight during trips.
- Maintenance history, including air filters, oxygen sensors, and exhaust condition.
- Climate and terrain, with hilly routes and extreme temperatures reducing efficiency.
For a used 1991 Ranger, a proactive tune-up, correct tire pressure, and careful driving can help maximize the vehicle’s fuel economy given its age and drivetrain.
Summary
The 1991 Ford Ranger 4.0 V6 generally delivered mileage in the high teens to low 20s, with 2WD models tending toward the upper end of that range and 4x4 models toward the lower end. Real-world results depend on maintenance, driving style, and conditions. When evaluating a vintage Ranger today, review maintenance records, inspect the fuel system, and consider responsible upgrades to achieve the best possible efficiency.
