FORD F-350 · model year

2021 FORD F-350

110 NHTSA complaints, 2 crash reports for this specific cohort.

NHTSA overall rating

Not crash-tested

New Car Assessment Program

The 2021FORDF-350 carries 110 consumer safety complaints in NHTSA's Office of Defects Investigation database for this specific model-year cohort. Within that volume, owners reported 2 crashes, 5 fires, 5 injuries, and 0 fatalities. No NCAP 5-star crash-test rating is available for this model year in the federal database.

Component-level analysis is where model-year complaints become actionable: the top complaint category for the 2021 F-350 is fuel system, diesel with 19 filings, followed by engine (12) and unknown or other (10). Concentration in one or two component groups is the classic signature of a systemic defect; a flat distribution usually reflects normal aging, warranty complaints, or isolated build-plant variability.

NHTSA currently has 177 investigation files overlapping the 2021 F-350, and 8 remain open. Owners comparing this cohort against neighboring years should pair the counters above with the complaint-by-year trend on the parent model page — a spike in a single year often tracks to a platform refresh, a new transmission supplier, or an updated ECU calibration. Use the related-complaint feed below to read raw owner narratives before deciding whether any pattern here affects your specific use case.

110
Complaints
2
Crashes
5
Fires
5
Injuries
0
Deaths

Total Complaints

110 filings

Crashes Reported

2 reports

Source

NHTSA ODI

Federal complaints database

Complaints vs. fleet median (215)

At or below the fleet median complaint volume.

Complaints by Component

ComponentCount
FUEL SYSTEM, DIESEL19
ENGINE12
UNKNOWN OR OTHER10
FUEL/PROPULSION SYSTEM10
ELECTRICAL SYSTEM10
POWER TRAIN8
SUSPENSION5
STEERING4
VISIBILITY/WIPER4
SERVICE BRAKES4
LATCHES/LOCKS/LINKAGES:TAILGATE:LATCH3
VEHICLE SPEED CONTROL3
VISIBILITY2
LANE DEPARTURE: BLIND SPOT DETECTION2
BACK OVER PREVENTION2

Recent Complaints

20260219ENGINE

Cold side intercooler boost tube cracked due to constant vibration impact from coolant overflow hose routed directly above and on top of it. Part and vehicle is available for inspection. The split in the boost hose caused me to loose power while attempting to merge onto a road, almost being hit by another vehicle. After research there are multiple other instances of complaints of the same thing happening to others and multiple aftermarket manufacturers producing replacement and upgraded parts with references and warnings of the same thing happening for the last 10 years. No warning lamps or symptoms prior to failure. After failure no warning lamps but could hear an audible hiss. The vehicle has not yet been inspected by the dealer or police. I was told by their parts people it is a regular failure and the part costs typically around $200 and they only sold it as a full part and not just the rubber replacement hose althought they are separate parts connected with hose clamps.

20260216ENGINE

Driving and abrupt transmission shifting issues.

20260216FUEL/PROPULSION SYSTEM

Driving and abrupt transmission shifting issues.

20260216UNKNOWN OR OTHER

Driving and abrupt transmission shifting issues.

20251210FUEL SYSTEM, DIESEL

The contact owns a 2021 Ford F-350. The contact received a recall letter related to NHTSA Campaign Number: 24V957000 (Fuel System, Diesel). The contact was concerned about being involved in a crash. The local dealer was contacted and confirmed that the software fix was not available. The vehicle was not diagnosed or repaired. The manufacturer was contacted, but no assistance was provided. The contact did not experience a failure.

20251208ELECTRICAL SYSTEM

See attached document for complaint.

20251201FireENGINE

On 11/19/25 , my 2021 Ford f350 burned to the ground due to engine malfunction. From what the fire department said.

20251201FireFUEL/PROPULSION SYSTEM

On 11/19/25 , my 2021 Ford f350 burned to the ground due to engine malfunction. From what the fire department said.

20251105FUEL SYSTEM, DIESEL

The contact owns a 2021 Ford F-350. The contact received notification of NHTSA Campaign Number: 24V957000 (Fuel System, Diesel); however, the part to do the recall repair was not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The contact stated that while driving at an undisclosed speed with the cruise control activated, the contact heard an abnormally loud popping and clicking sound. The check engine warning light was illuminated. The message "Decreased Engine Power" was displayed, and the vehicle experienced a loss of drive power. The contact coasted off the road and came to a complete stop. The message "Shift to Neutral" was displayed. The contact turned off the vehicle and let it cool down for five minutes. The vehicle failed to restart. The vehicle was towed to an independent mechanic, who determined that the high-pressure fuel pump had failed. The dealer was made aware of the failure but confirmed that parts

Mileage: 132,900

20251003SERVICE BRAKES

The contact owns a 2021 Ford F-350. The contact stated that while driving at speeds above 40 MPH and attempting to depress the brake pedal, the vehicle slid and drifted to the right. There was no warning light illuminated. The vehicle was taken to a local dealer where it was diagnosed, and the contact was informed that the grease pins needed to be greased. The vehicle was not repaired. The manufacturer was notified of the failure. The approximate failure mileage was 44,000.

Mileage: 44,000

20250930FUEL SYSTEM, DIESEL

The contact owns a 2021 Ford F-350. The contact received notification of NHTSA Campaign Number: 24V957000 (Fuel System, Diesel); however, the part to do the recall repair was not yet available. The local dealer was contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was not made aware of the issue. The contact had not experienced a failure.

20250924UNKNOWN OR OTHER

Back up camera screen goes blue when put in reverse. Then after 20 seconds says camera unavailable see dealer. I had dealer repair with a software reset. Worked for about 2 weeks then same symptoms. Noticed Ford has a recall for the same symptoms on other vehicles but for some reason F-350s are not a part of it. Would suspect the truck uses the same camera system as the other ford vehilces under the recall. Ford needs to step up and cover the F-350s

20250909ELECTRICAL SYSTEM

The contact owns a 2021 Ford F-350. The contact stated that while driving 65 MPH, the Disconnect/Reconnect message was displayed on the instrument panel. The contact stated that while depressing the brake pedal with the trailer brake control, the system indicated that there was no trailer detected. An independent mechanic was contacted. The vehicle was taken to an independent mechanic to be diagnosed; however, the diagnostic result was unknown. The contact stated that the fuses, wiring harness, and trailer brake control were replaced. The contact related the failure to NHTSA Campaign Number: 22V193000 (ELECTRICAL SYSTEM); however, the VIN was not included in the recall. The manufacturer was notified of the issue and informed the contact that a mechanic would be sent to inspect the vehicle. The failure mileage was 200,000.

Mileage: 200,000

20250830SERVICE BRAKES

Upon starting the vehicle I get precollision not available warning light and hill decent control fault hill assist warning. Service steering and antilock brake brake fault lights. The dealer has looked at it but they said can not duplicate it. The problem is when I am towing my fifth wheel trailer and this happens it shuts down the brake controller for the fifth wheel and it’s VERY hard to stop the truck and trailer

20250830STEERING

Upon starting the vehicle I get precollision not available warning light and hill decent control fault hill assist warning. Service steering and antilock brake brake fault lights. The dealer has looked at it but they said can not duplicate it. The problem is when I am towing my fifth wheel trailer and this happens it shuts down the brake controller for the fifth wheel and it’s VERY hard to stop the truck and trailer

20250829BACK OVER PREVENTION: REARVIEW SYSTEM BRAKING

My Ford F350 is experiencing the recall deficiency issued by Ford in January 2025 after repeated calls Ford still is unable or unwilling to fix my vehicle. Ford motor company, and the local dealership have told me workarounds could be performed, but they would be done at my expense. A rearview camera on a pick up truck is used often and is a safety hazard when backing up Blind to low objects.

20250829LANE DEPARTURE: BLIND SPOT DETECTION

My Ford F350 is experiencing the recall deficiency issued by Ford in January 2025 after repeated calls Ford still is unable or unwilling to fix my vehicle. Ford motor company, and the local dealership have told me workarounds could be performed, but they would be done at my expense. A rearview camera on a pick up truck is used often and is a safety hazard when backing up Blind to low objects.

20250829UNKNOWN OR OTHER

My Ford F350 is experiencing the recall deficiency issued by Ford in January 2025 after repeated calls Ford still is unable or unwilling to fix my vehicle. Ford motor company, and the local dealership have told me workarounds could be performed, but they would be done at my expense. A rearview camera on a pick up truck is used often and is a safety hazard when backing up Blind to low objects.

20250821FUEL SYSTEM, DIESEL

The contact owned a 2021 Ford F-350. The contact stated that while driving at an undisclosed speed, the vehicle inadvertently lost motive power and was unable to accelerate as needed. The contact was able to reach to drive to the residence, where the failure persisted. No warning lights were illuminated. The vehicle was taken to an independent mechanic, who diagnosed a failure high-pressure fuel pump (HPFP). The vehicle was repaired. After investigating the failure, the contact attributed it to NHTSA Campaign Number: 24V957000 (Fuel System, Diesel). The VIN was included, but parts were not yet available. The manufacturer was notified of the failure, a case was opened, and the contact was referred to the NHTSA Hotline for assistance. The contact had since sold the vehicle. The failure mileage was 280,000.

Mileage: 280,000

20250801FUEL/PROPULSION SYSTEM

I have a fuel leak on this vehicle that seams to coming from fuel filter housing or fuel pump.

Compare 2021FORDF-350 to Similar Vehicles

NHTSA Investigations 8 Open

View all investigations

Frequently Asked Questions

How many complaints does the 2021 FORD F-350 have?
The 2021 FORD F-350 has 110 NHTSA complaints, 2 crashes, 5 fires, 5 injuries, and 0 deaths reported.
What are the most common problems with the 2021 FORD F-350?
The most-complained component for the 2021 FORD F-350 is FUEL SYSTEM, DIESEL with 19 complaints. Other frequently reported areas include ENGINE and UNKNOWN OR OTHER.
Is the 2021 FORD F-350 safe to buy?
Review the complaint history, crash and fire reports, safety ratings, and recall status on this page to make an informed decision. No NHTSA crash test rating is available for this model year. Compare with other model years using the links above.
Where does this data come from?
All complaint, recall, and safety rating data is sourced from the National Highway Traffic Safety Administration (NHTSA). Complaints are filed by vehicle owners through NHTSA's Office of Defects Investigation.

Vehicle Safety Guides

Data as of 2025. Sources: NHTSA Office of Defects Investigation (ODI) complaints database, NHTSA recall campaign API, NHTSA NCAP crash-test ratings, and NHTSA FARS for fatality cross-reference.