repaired · 2026 Q3
Delivery: fuel pump
NewRisk. High pressure fuel pump failure can cause a loss of drive power, increasing the risk of a crash.
2021 Ford F-350 SDProblems, recalls & complaints
NHTSA has logged 98 owner complaints about the 2021 Ford F-350 SD, most often about the fuel system, diesel. It is covered by 14 safety recalls, and for recall 25V-455 the manufacturer reports only 19% of affected cars repaired.
Source: NHTSA complaints, recalls, investigations and manufacturer recall reports, through October 7, 2026. Updated daily.
Complaints by system
Where the 2021 Ford F-350 SD has problems
98 complaints grouped by the system owners reported.
24Fuel system, diesel
15Engine4 crash/fire/injury
15Fuel/propulsion system1 crash/fire/injury
13Electrical system
10Power train
5Back over prevention
5Suspension
4Steering
4Latches/locks/linkages
2511 other systems2 crash/fire/injury
| System | Complaints | Crash, fire or injury |
|---|---|---|
| Fuel system, diesel | 24 | 0 |
| Engine | 15 | 4 |
| Fuel/propulsion system | 15 | 1 |
| Electrical system | 13 | 0 |
| Power train | 10 | 0 |
| Back over prevention | 5 | 0 |
| Suspension | 5 | 0 |
| Steering | 4 | 0 |
| Latches/locks/linkages | 4 | 0 |
| 11 other systems | 25 | 2 |
Source: NHTSA Office of Defects Investigation. Complaints are submitted by the public and are not verified by NHTSA.
14 recalls
2021 Ford F-350 SD recalls and how many were fixed
Each ring shows the share of affected cars repaired, from the manufacturer’s latest quarterly report to NHTSA. Recall repairs are free at authorized dealers.
repaired · 2026 Q3
Back over prevention: software
Risk. A rearview camera image that does not display properly can reduce the driver’s view behind the vehicle, increasing the risk of a crash.
repaired · 2026 Q3
Steering: column
Risk. A loss of steering control increases the risk of a crash.
repaired · 2026 Q3
Delivery: fuel pump
Risk. An engine stall increases the risk of a crash.
Show 10 more recalls
repaired · 2026 Q3
Sensing system: camera
Risk. Rearview camera failure can reduce the driver's view of what is behind the vehicle, increasing the risk of a crash.
repaired · 2026 Q3
Delivery: fuel pump
Risk. High pressure fuel pump failure can cause a loss of drive power, increasing the risk of a crash.
repaired · 2025 Q3
Other: owners/service/other manual
Risk. Without instructions, the head restraints may be improperly adjusted, increasing the risk of injury in the event of a crash.
repaired · 2025 Q2
Windshield wiper/washer: linkages
Risk. Inoperative windshield wipers can reduce visibility in certain driving conditions, increasing the risk of a crash.
repaired · 2024 Q1
Driveline: driveshaft
Risk. A fractured driveshaft can cause a loss of drive power, or a loss of vehicle control if the driveshaft contacts the ground.
repaired · 2024 Q3
Fuel system, diesel
Risk. A fuel leak in the presence of an ignition source can increase the risk of a fire or injury.
repaired · 2024 Q1
Power train: axle assembly
Risk. Driveshaft separation may result in a loss of drive power, or unintended vehicle movement if the vehicle is in park without the parking brake applied,…
repaired · 2023 Q1
Power train: axle hubs
Do not driveRisk. A detached wheel and wheel extender can increase the risk of a crash.
repaired · 2023 Q1
Trailer hitches: fifth wheel assembly
Risk. A cracked mounting bracket could result in the fifth wheel detaching from the vehicle while towing, increasing the risk of a crash.
repaired · 2023 Q4
Visibility: windshield
Risk. In the event of a crash, if the windshield separates from the vehicle, it can increase the risk of injury.
Recalls apply to specific cars. To see whether a recall is still open on yours, enter the 17-character VIN at nhtsa.gov/recalls or with Ford.
Best & worst years
2021 vs. every other F-350 SD year
Bars show complaints per model year. Colors show the CarFlaw verdict: complaints weighted for crashes, fires and injuries, adjusted for years on the road and compared with the F-350 SD median. How we score
'93'94'95'96'97'98'99'00'01'02'03'04'05'06'07'08'09'10'11'12'13'14'15'16'17'18'19'20'21'22'23'24'25'26
- Avoid
- Caution
- Solid
- Best
- Not rated
1 investigation
NHTSA defect investigations
Federal investigations that included the 2021 Ford F-350 SD, and the recalls they led to.
- Sogefi Secondary Diesel Fuel Filter LeakOpen
In owners' words
What F-350 SD owners report
Recent fuel system, diesel complaints filed with NHTSA, shortened. Personal details are removed.
The contact owns a 2021 Ford F-350 SD. The contact stated that while driving 50 MPH, the accelerator pedal was depressed; however, the vehicle failed to accelerate as intended. The engine seized, and the vehicle was pulled over to the shoulder of the roadway. The contact stated that while…
The contact owns a 2021 Ford F-350 SD. The contact received notification of NHTSA Campaign Number: 24V957000 (Fuel System, Diesel). The contact stated that while driving 20 MPH, the message "Reduced Power" was displayed, and the check engine warning light was illuminated. The vehicle stalled and…
The contact owns a 2021 Ford F-350. The contact stated that while driving at an undisclosed speed, the accelerator pedal was depressed, but the vehicle failed to accelerate as intended. The vehicle was driven to the shoulder of the road, where it lost motive power. The message "Reduced Engine…
Own a 2021 F-350 SD?
Decode your VIN to see the recalls for your exact car, then confirm open recalls with NHTSA.