Used 2021 Ford F-350 Super Duty for SaleNationwide

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

Prices have softened 3.22% compared to this time last year, making it a favorable time to shop this model year.

There are 1,717 listings available, which gives you a meaningful pool to compare prices and equipment.

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

Generally — the 2021 Ford F-350 Super Duty earns a 4.44/5 user rating and a 7.67/10 expert rating. 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 money. The review summary also points to strong fuel efficiency on long trips, which adds to its appeal if you spend real time behind the wheel.

The trade-offs are clear: the ride is poor, handling is poor, and it is noisy. That means it makes the most sense if you need a heavy-duty truck for towing, hauling, or other work-first use cases rather than as a comfort-first daily driver.

With 27.8% of listings marked as good or great deals, you still have 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 feedback points to a truck that feels robust, dependable, and well suited to long-term use, especially when you need serious capability. The expert driving notes also reinforce that it delivers on its promise when asked to tow or haul, which matters if you plan to count on it for demanding work.

The diesel powertrain is described as effortlessly motivating the truck, and the transmission is said to deliver on its promise under load. For used buyers, the main ownership risk is less about the truck’s mission and more about how hard the previous owner worked it.

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

Accident-free inventory is solid at 80.4% — always verify the vehicle history report.

You should still run a vehicle history report on any truck you’re considering, even if the listing looks clean. A pre-purchase inspection matters here because heavy-duty trucks can hide wear from towing, hauling, and tight urban use. Focus especially on condition, signs of hard use, and whether the truck’s equipment matches how you plan to use it.

Key things to evaluate:

• Trim level: The cabin ranges from more purposeful in the lower trims to more luxury-oriented in the higher trims, and the base versions miss some of the upscale touches found higher up the lineup.
• Powertrain: You can get multiple powertrain options, including the available turbo-diesel V8, which is the setup tied to the truck’s biggest towing and torque numbers.
• Safety package: Available driver-assistance features 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.
• Infotainment: The truck uses an 8-inch touchscreen with Sync 3, and higher trims add smartphone integration, wireless smartphone charging, navigation, FordPass Connect with a 4G LTE WiFi hotspot, and a B&O premium sound system.
• Fuel efficiency: The diesel returned 15.4 mpg in testing and improved to 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 work-focused starting point, and it makes sense if you want the F-350’s core capability without paying for luxury-oriented extras.
• XLT: This trim adds more everyday usability while staying closer to the truck’s practical roots, making it a sensible middle ground for buyers who want value.
• Lariat: This is the best-value trim for many shoppers because it starts moving the cabin toward a more upscale feel without jumping all the way to premium pricing.
• King Ranch: Starting here, the cabin gets higher-end décor, so this trim suits you if you want a more distinctive and upscale interior.
• Platinum: Choose this if you want a more premium-feeling heavy-duty truck and are willing to pay for it.
• Limited: This is the luxury play, with the available turbodiesel V8, four-wheel drive, adaptive steering, and the most upscale interior treatment in the lineup.

The safety package is available across the lineup, but adaptive cruise control was standard on the test truck and not every driver-assistance feature is equally effective in traffic.

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

This is a moderate buyer’s market, so you can shop carefully and still find worthwhile listings.

• Deal availability: 27.8% of listings are priced as good or great deals.
• Inventory: There are 1,717 listings available.
• Price trend: Prices have softened 3.22% compared with last year.
• Clean inventory: 80.4% of listings are accident-free.

If you find a listing below $48,720, 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 $49,352 sits slightly below last year's $50,996.

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

Because this is a truck that buyers often choose for specific work needs, well-equipped examples with clean histories should remain easier to move. Trucks that show signs of hard use or neglect are more likely to face pricing pressure.

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?

The 2021 Ford F-350 Super Duty does not have official crash-test data available, so you should lean more heavily on its available safety tech and the truck’s size and weight when evaluating protection.

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

Available driver-assistance features 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. The truck also includes 911 Assist through the Sync 3 system when your smartphone is paired.

There are some caveats to keep in mind: the adaptive cruise system can behave unevenly in traffic, it does not bring the truck to a full stop, and the blind-spot warning indicator can be hard to see. That means you should still rely on careful mirror setup and attentive driving, especially in a truck this large.

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:

• 27.8% of listings are priced as good or great deals.
• Accident-free inventory is solid at 80.4% — always verify the vehicle history report.
• Price trend: Prices have softened 3.22% compared with last year.
• Owners rate it 4.44/5 — a solid satisfaction signal.
• It combines broad configuration choices with strong towing and hauling capability.

Consider the 2020 if:

• At $45,569, the 2020 costs less than the current year's $49,352 average.
• It adds a new 7.3-liter V8, expanded use of the 10-speed automatic, and a Tremor off-road trim.

The bottom line: If you want the stronger current-market balance of price, inventory, and owner satisfaction, the 2021 is the better primary pick. If your priority is spending less up front and you still want a highly configurable heavy-duty truck, the 2020 is the smarter price-sensitive alternative.

These recommendations are based on CarGurus' proprietary market data from September 11, 2026, CarGurus experts' opinions, and generative AI.