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How many miles per gallon does a 2008 Ford F450 Super Duty get?

In short, fuel economy for the 2008 Ford F-450 Super Duty depends on the engine and configuration. Diesel models commonly average about 15–20 miles per gallon on highway driving and around 12–15 mpg in mixed driving; gasoline-powered versions typically fall in the 9–14 mpg range overall.


Engine options and their impact on efficiency


Diesel: 6.4-liter Power Stroke


The 6.4-liter Power Stroke turbodiesel was a common setup for the F-450 in 2008. When not towing and under steady highway conditions, owners and testers often report highway mileage near 18–20 mpg, with mixed driving around 14–17 mpg and city use typically lower (roughly 12–15 mpg). Heavier payloads or towing will reduce those numbers further.


Gasoline options: 5.4-liter V8 and 6.8-liter V10


The gasoline-powered variants—the 5.4L V8 and the 6.8L V10—tend to be less fuel-efficient. Real-world figures generally fall in the 9–12 mpg range in city driving, 13–16 mpg on the highway, and around 11–14 mpg in mixed conditions. Towing or heavy payload can bring these numbers down even more.


EPA estimates vs. real-world experience


For heavy-duty trucks of this era, official EPA combined mileage numbers were not always published for every configuration, and many owners rely on real-world results. The figures above reflect common owner reports and testing rather than a single sticker value, and actual mileage varies with drivetrain (2WD vs. 4WD), axle gearing, tires, payload, and driving style.


What affects mpg in a 2008 F-450


Key factors that influence miles-per-gallon include engine choice, payload and towing weight, drivetrain configuration (2WD vs. 4WD), axle gearing, tire size and pressure, aerodynamics, and driving habits. Regular maintenance, proper tire inflation, and mindful towing practices can help maximize efficiency for this heavy-duty truck.


Summary


The 2008 Ford F-450 Super Duty offers both diesel and gasoline powertrains, with diesel typically delivering higher mpg, especially on highway runs. Expect roughly 15–20 mpg highway and 12–15 mpg combined with the 6.4L Power Stroke diesel, and around 9–12 mpg city, 13–16 mpg highway, and 11–14 mpg combined with the gasoline 5.4L V8 or 6.8L V10. For the most precise figure, consult the original window sticker or look up the exact configuration on fueleconomy.gov using your VIN or model details.

What are the pros and cons of buying an F450?


For towing 20,000 pounds on a full-time basis, having unlimited power, the low 4.30 gear ratio, a larger 48-gallon fuel tank, a long bed and bigger brakes make RVing a bit easier. But there are some drawbacks. The ride is a bit rigid and getting around town, grocery shopping, parking, etc. can be more challenging.



How many miles per gallon does a Ford F450 diesel get?


2022 Ford F-450 Powertrain and Performance Information
The engine is a 3.5-liter twin-turbocharged diesel V6 that gives you an incredible 450 horsepower while maintaining fuel efficiency at an EPA-estimated 23 miles per gallon on the highway and 18 miles per gallon in the city.



How many miles per gallon does a 2008 Ford F450 diesel get?


After driving 180-miles over three days around LA County, loaded and unloaded in almost every traffic condition possible, we averaged a gut clenching 9.2 9.5 miles-per-gallon. The truck consumed just shy of 20-gallons of ultra low sulfur diesel for a grand total of $81.36.



How much is a 2008 F450 worth?


A 2008 Ford F450 has depreciated $5,754 or 32% in the last 3 years and has a current resale value of $12,047 and trade-in value of $9,762. Login or create a new account to see your vehicle depreciation forecast data.


Kevin's Auto

Kevin Bennett

Company Owner

Kevin Bennet is the founder and owner of Kevin's Autos, a leading automotive service provider in Australia. With a deep commitment to customer satisfaction and years of industry expertise, Kevin uses his blog to answer the most common questions posed by his customers. From maintenance tips to troubleshooting advice, Kevin's articles are designed to empower drivers with the knowledge they need to keep their vehicles running smoothly and safely.