What is the gas mileage on a 6.7 turbo diesel?
In typical use, the 6.7L Power Stroke diesel in Ford Super Duty trucks returns roughly 17–18 mpg combined in 2WD configurations and about 15–16 mpg combined in 4x4 models. Real-world mileage varies widely with towing, payload, speed, and terrain.
Overview: The 6.7L Power Stroke and mpg benchmarks
The 6.7L Power Stroke V8 is Ford’s heavy‑duty diesel engine used in the F-250, F-350, and related Super Duty pickups. Fuel economy estimates come from the U.S. Environmental Protection Agency (EPA) and are published by fueleconomy.gov. Because these are heavy-duty trucks with substantial payload and towing capabilities, mpg can swing considerably from the quoted figures depending on configuration, axle gearing, and load.
EPA estimates by drivetrain (current-generation models)
Here are typical EPA figures for recent 6.7L Power Stroke-equipped Super Duty models. Values are based on 2WD and 4x4 configurations and reflect city/highway ratings as published for everyday use.
- 2WD: City around 14–15 mpg; Highway around 19–21 mpg; Combined around 17–18 mpg.
- 4x4: City around 13–14 mpg; Highway around 18–19 mpg; Combined around 15–16 mpg.
These figures illustrate the modest penalty for adding 4x4 capability and reflect typical showroom configurations. Actual numbers can vary by year, axle ratio, tires, and other options.
Real‑world mpg: what owners typically see
Real-world fuel economy often diverges from EPA estimates, especially when towing, carrying heavy payloads, or driving under load. The following ranges capture common experiences reported by owners in day-to-day use.
- Empty 2WD highway driving (no trailer): roughly 17–22 mpg, depending on speed and wind resistance.
- Empty 4x4 highway driving: roughly 15–21 mpg, depending on speed and terrain.
- Light towing (small trailers or lightweight loads): typically 12–16 mpg.
- Moderate to heavy towing (car trailers, campers, or large payloads): often 8–12 mpg.
Keep in mind that real-world numbers can vary dramatically based on how aggressively you accelerate, maintain steady highway speeds, use cruise control, and how long you’re towing. Payload weight, trailer aerodynamics, and road grade are major mpg drivers in this class of truck.
Factors that influence mpg on the 6.7L Power Stroke
Several variables play a significant role in the actual fuel economy you’ll see. Here are the most impactful:
- Payload and towing weight
- Axle ratio and gearing
- drivetrain (2WD vs. 4x4)
- Driving speed and acceleration patterns
- Terrain and altitude
- Ambient temperature and engine warm-up
- Tire size and inflation
- Maintenance and fuel quality
Understanding these factors helps explain why two nearly identical trucks can show different mpg numbers in real-world use.
Tips to maximize mpg with a 6.7L Power Stroke
Small, practical changes can yield meaningful gains over time. Consider:
- Keep payload within recommended limits to avoid excessive fuel burn from overloading.
- Maintain optimal tire pressure and consider fuel-efficient tire choices.
- Drive at steady, moderate speeds and use cruise control on highways when appropriate.
- Plan trips to minimize stop-and-go driving and idling.
- Follow manufacturer-recommended maintenance intervals (air filter, fuel filter, oil changes, etc.).
- Use fresh, high-quality diesel and consider additives only if recommended by Ford or a trusted mechanic.
These practices won’t transform a heavy-duty diesel into a fuel-sipping vehicle, but they can help you get closer to the EPA estimates and improve overall efficiency during routine use.
Recent updates and what they mean for mpg
Ford has periodically updated the 6.7L Power Stroke with improvements to ignition reliability, emissions systems, and tuning. While core mpg figures tend to remain similar across model years, updates can yield incremental gains in efficiency or more consistent performance under load. For the most precise, year-by-year numbers, consult fueleconomy.gov or Ford’s official specifications for the exact truck you’re considering.
Summary
The 6.7L Power Stroke turbo diesel in Ford Super Duty trucks typically delivers EPA-estimated combined fuel economy in the mid-teens to high-teens for 2WD and slightly lower figures for 4x4 configurations. Real-world mileage is heavily influenced by towing, payload, and driving conditions. If mpg is a priority, consider how you’ll use the truck, and consult the latest EPA estimates for your exact configuration while factoring in towing, payload, and driving style.
Sources and further reading
For precise, model-year-specific numbers, see fueleconomy.gov and Ford’s official specifications. Real-world experiences can vary, so consult multiple sources and, if possible, test drive under conditions similar to your intended use.
