2021 Ford F-350 SD used buying checklist
What to check on a used 2021 Ford F-350 SD before you pay, based on what owners report, its recalls and the repairs the maker covers. Print it and take it to the test drive.
Test for the problems owners report most
The most reported problems of this model year, with what to look for on the test drive.
- Fuel pump failure20 owner complaints, usually around 113,000 miles
Watch for fuel smells, hard starting and the check engine light, and make sure the fuel gauge works.
- Check engine light12 owner complaints, usually around 128,000 miles
Start the engine cold and listen for knocking or ticking. Check for warning lights, oil leaks and a low oil level, and ask how often oil had to be topped up.
- Sudden loss of power9 owner complaints
Start the engine cold and listen for knocking or ticking. Check for warning lights, oil leaks and a low oil level, and ask how often oil had to be topped up.
Make sure these recalls were done
Recall repairs are free at any dealer of the brand. Ask the seller for proof, or have a dealer check the VIN.
- Fuel system, dieselRecall number 26V158000, Mar 17, 2026
- Back over preventionRecall number 25V686000, Oct 10, 2025
- SteeringRecall number 25V626000, Sep 19, 2025
- Fuel system, gasolineRecall number 25V455000, Jul 7, 2025
- Back over preventionRecall number 25V048000, Jan 31, 2025
- Fuel system, dieselRecall number 24V957000, Dec 20, 2024
- EquipmentRecall number 23V420000, Jun 9, 2023
- VisibilityRecall number 22V250000, Apr 14, 2022
- StructureRecall number 22V087000, Feb 16, 2022
- Fuel system, dieselRecall number 22V013000, Jan 14, 2022
- Power trainRecall number 21V536000, Jul 15, 2021
- Power trainRecall number 21V390000, May 25, 2021
- Trailer hitchesRecall number 21V379000, May 24, 2021
- VisibilityRecall number 21V090000, Feb 18, 2021
Service bulletins worth asking about
Repair instructions the maker sent to dealers for known problems. Ask whether any of these repairs were done.
- This bulletin supersedes 24-2249Oct 1, 2026
- This bulletin supersedes 25-2549May 6, 2026
Before you pay
- Decode the VIN and make sure it matches the title, the registration and the car itself.
- Get a vehicle history report to check for accidents, salvage or flood titles and odometer problems.
- Ask for service records, especially oil changes and any transmission fluid service.
- Start the car from cold, and drive it at city and highway speeds for at least 20 minutes.
- Have an independent mechanic inspect the car before you sign anything.
See every 2021 Ford F-350 SD problem
VIN decoder
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Buying a used 2021 Ford F-350 SD?
Check the exact car before you pay: accidents, salvage or flood titles, odometer readings and previous owners.
Check its history