Used 2021 Ford F-350 Super Duty for SaleNationwide

How much does the 2021 Ford F-350 Super Duty cost?

Prices have softened 3.41% compared to this time last year, making it a favorable time to shop this model year.

There are 1,733 listings available, which suggests you have a meaningful amount of inventory to compare.

If you find a listing below $48,721.07, that's toward the low end of the year-round range and worth acting on quickly.

Is the 2021 Ford F-350 Super Duty a good car?

Generally — the 4.44/5 user rating points to strong owner satisfaction, and the expert score is 7.67/10. The model scores 9/10 across Look and feel and Form and function.

Owners consistently praise its robust performance, spacious interior, and the amount of features you get for the price. The review summary also points to strong fuel efficiency on long trips, which helps offset some of the truck’s size and capability-focused mission.

The trade-offs are clear: the expert notes poor ride quality, poor handling, and noise. That matters most if you want a truck that feels relaxed in everyday driving rather than one built around serious work.

For shoppers who need a heavy-duty truck for towing, hauling, and broad configuration flexibility, the F-350’s use case lines up well with its strengths. 28.2% of listings are good or great deals, so there is still room to shop selectively.

Is the 2021 Ford F-350 Super Duty reliable?

Owners rate it 4.44/5, a solid signal of long-term satisfaction. The owner summary also points to a truck that feels robust and dependable, with many drivers describing it as a strong long-term companion for demanding use.

The expert notes that the diesel and 10-speed automatic “easily delivers on its promise,” which supports the idea that the truck is built to handle sustained work. The cost-effectiveness commentary also frames it as a sensible choice if you buy it for towing and hauling rather than for luxury alone.

For used buyers, the main long-term ownership risk is less about the truck’s mission and more about how hard it was worked before you buy it.

What should I look for when buying a used 2021 Ford F-350 Super Duty?

Accident-free inventory is solid at 80.8% — always verify the vehicle history report.

You should still check the history report carefully, because heavy-duty trucks are often used hard and may have spent time towing, hauling, or working in fleet duty. Prioritize a pre-purchase inspection that focuses on wear from heavy use, and pay close attention to the condition of the brakes, steering, suspension, and bed area.

Key things to evaluate:

• Trim level: The truck ranges from XL through Limited, and the cabin becomes more luxury-oriented as you move up the ladder. Base trims are more purpose-built, while higher trims add more upscale materials and equipment.
• Powertrain: The truck offers multiple powertrain options, including an available turbo-diesel V8 that delivers strong torque and easy towing performance.
• Safety package: Available driver-assistance systems include adaptive cruise control, forward-collision warning, automatic emergency braking, lane-departure warning, lane-keep assist, blind-spot monitoring with trailer coverage, and rear cross-traffic alert. Some features are not standard on every trim.
• Infotainment: The truck uses an 8-inch touchscreen with Sync 3, plus smartphone integration, wireless smartphone charging, navigation, FordPass Connect services, and a 4G LTE WiFi hotspot.
• Fuel efficiency: The diesel test truck averaged 15.4 mpg in unloaded testing and 16.5 mpg over a full week of driving.

Which 2021 Ford F-350 Super Duty trim should I buy?

The 2021 Ford F-350 Super Duty is offered in 6 trim levels: XL, XLT, Lariat, King Ranch, Platinum, and Limited.

Here's the short version:

• XL: This is the most work-focused choice, and it makes sense if you want the F-350’s core capability without paying for luxury extras.
• XLT: This is the best-value trim for many shoppers because it keeps the truck practical while adding more everyday usability than the XL.
• Lariat: This is the sweet spot if you want a more comfortable cabin and a better balance of equipment and price.
• King Ranch: This trim moves the truck into more upscale territory, with higher-end interior décor and a more premium feel.
• Platinum: Choose this if you want a more luxurious heavy-duty truck with a stronger emphasis on comfort and presentation.
• Limited: This is the top-end choice, and it suits you if you want the most upscale version of the F-350, including the available turbodiesel V8 and 4WD.

Adaptive steering is standard on Limited and optional on other trims except XL and XLT.

Is now a good time to buy a used 2021 Ford F-350 Super Duty?

This is a moderate market for selective buyers, so you can shop with some leverage if you know what you want.

• Deal availability: 28.2% of listings are priced as good or great deals.
• Inventory: There are 1,733 listings available.
• Price trend: Prices have softened 3.41% compared with last year.
• Clean inventory: 80.8% of listings are accident-free.

If you find a listing below $48,721.07, that's toward the low end of the year-round range and worth acting on quickly.

What is the 2021 Ford F-350 Super Duty's resale value?

The current average of $49,327 sits slightly below last year's $51,068.

That softer pricing suggests the market has eased, which can help you buy more carefully now. For a future seller, it also means you should expect resale value to depend heavily on condition, configuration, and how well the truck was maintained.

Because this model year still has strong owner satisfaction and clear demand from buyers who need serious towing and hauling, well-kept examples should remain easier to move than neglected ones. Trucks with the right equipment and cleaner histories are likely to hold up better when it’s time to sell.

Vehicles with solid owner satisfaction ratings, like this model year's 4.44/5, tend to retain buyer demand, which supports resale value over time.

Is the 2021 Ford F-350 Super Duty safe?

It earns a 7/10 safety score from our experts.

The truck comes with available driver-assistance systems that include adaptive cruise control, forward-collision warning, automatic emergency braking, lane-departure warning, lane-keep assist, blind-spot monitoring with trailer coverage, and rear cross-traffic alert. That gives you a broad safety toolkit for a truck of this size.

There are still caveats to keep in mind. The expert notes that adaptive cruise control can behave unevenly in traffic and does not bring the truck to a full stop, and blind-spot monitoring still requires careful mirror adjustment because smaller vehicles can disappear from view.

Should I buy a 2021 Ford F-350 Super Duty or consider a different year?

If you're weighing the 2021 against nearby model years, here's how to think about it:

Choose the 2021 if:

• 28.2% of listings are priced as good or great deals.
• Accident-free inventory is solid at 80.8% — always verify the vehicle history report.
• Price trend: Prices have softened 3.41% compared with last year.
• Owners rate it 4.44/5 — a solid satisfaction signal.
• It keeps the post-refresh gains in powertrain, technology, design, and capability while still offering serious towing and hauling strength.

Consider the 2020 if:

• At $45,165, the 2020 costs less than the current year's $49,327 average.
• It offers a wide variety of trims and a new 7.3-liter V8.

The bottom line: If you want the stronger post-refresh package and are shopping for a truck built around serious work, the 2021 is the better primary target. If your budget matters more than the latest updates, the 2020 is the smarter price-first alternative.

These recommendations are based on CarGurus' proprietary market data from September 4, 2026, CarGurus experts' opinions, and generative AI.