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2021 Ford F-350 Owner Complaints

Updated May 30, 2026
Daniel Wilson

Complaint Summary

The 2021 Ford F-350 has 106 reported complaints.

  • Top issues involve fuel system, diesel and engine.

Reliability Score

Reliability Score

8.3/ 10

Based on 106 complaints

Most Frequent Issues

FUEL SYSTEM, DIESEL

19 17.9%

ENGINE

10 9.4%

ELECTRICAL SYSTEM

10 9.4%

UNKNOWN OR OTHER

9 8.5%

FUEL/PROPULSION SYSTEM

9 8.5%

Quick Insights

  • The top category is FUEL SYSTEM, DIESEL, accounting for 17.9% of all complaints.

  • Owners have reported issues across 27 distinct vehicle systems.

  • Note: Complaint data reflects owner reports and may not always indicate a verified defect. Compare with Recalls and TSBs for a complete picture.

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Complaint Summary

What owners keep reporting on the 2021 Ford F-350

The 2021 Ford F-350 has 106 owner complaints in this dataset. FUEL SYSTEM, DIESEL is the most common complaint category, representing about 18% of the reports shown here.

Most common complaint categories

The top complaint groups for the 2021 Ford F-350 are FUEL SYSTEM, DIESEL (19), ENGINE (10), ELECTRICAL SYSTEM (10).

Are these complaints a serious red flag?

Potentially. 63 complaint reports involve higher-attention systems like brakes, steering, engine, powertrain, fuel, suspension, airbags, or electrical components, which is enough to justify a focused inspection.

What should buyers inspect on a used 2021 Ford F-350?

Start with the top complaint systems, compare them against the recall report, then inspect service records for evidence that those same areas were already repaired or monitored.

Read the full buyer guideRecall report and remedy notesMaintenance costs and intervals2020 F-350 complaints2022 F-350 complaints2019 F-350 complaints

Detailed Complaint Log

Showing 27 of 27 systems

FUEL SYSTEM, DIESEL

19 Reports18% of total

Previewing the first 2 complaint summaries.

The contact owns a 2021 Ford F-350. The contact stated while driving at an undisclosed speed, the warning light illuminated indicating to pull the vehicle over. The contact drove the vehicle to the shoulder of the road. The contact stated that the vehicle lost motive power. The contact exited the vehicle and checked all the fluids. The contact stated that the fluid levels were at sufficient levels. The vehicle was inspected by an independent mechanic and the vehicle was diagnosed as fuel contamination. The contact was informed that the fuel system needed to be replaced. The vehicle was not repaired. The contact was advised of a recall NHTSA Campaign Number: 22V013000(Fuel System, Diesel) which had a similar failure description, however, the contact's VIN was not associated with the recall. The vehicle was towed to the dealer where it was diagnosed with a failed fuel system. The contact was informed that the fuel system needed to be replaced. The vehicle was not repaired. The manufacturer was not made aware of the failure but provided no assistance. The contact was advised to contact the NHTSA Hotline and report the failure. The failure mileage was approximately 58,000.

8/29/2024

The contact owns a 2021 Ford F-350. The contact received notification of NHTSA Campaign Number: 24V957000 (Fuel System, Diesel) however, he had had a failure of the diesel fuel pump prior to receiving the recall letter. The contact stated that the manufacturer exceeded a reasonable amount of time for the recall repair. The manufacturer was not made aware of the issue. The contact was observing that the check engine warning was illuminated and that he was having engine misfires. The contact stated that he was also hearing abnormal noises from the engine compart all prior to receiving the recall letter from the manufacturer. The contact stated that the failures were reoccurring until he was no longer able to start the vehicle. The contact had the vehicle towed to a dealer who diagnosed the vehicle and determined that the high-pressure diesel fuel pump had failed. The fuel pump and the fuel system needed to be replaced. The vehicle was repaired. The failure mileage was approximately 128,000. VIN tool confirms parts not available.

1/9/2025

17 more complaints are available in this category.

ENGINE

10 Reports9% of total

Previewing the first 2 complaint summaries.

This truck on a daily basis, shuts down with out warning. Check engine light comes on some time, some times get P0191, P0171 and other codes dealing with fuel rail and pressure. Vehicle had less than 10000 miles when started. Dealer don't know what to do. Shuts off when you are in a turn and leaves you with out steering, and shuts off when coming to a stop sign, or trying to park. Fuel filters have been changed 2 times in 2 months. Truck is not safe to drive because it keeps surging and cutting off. Idle speed varies as much as 250 rpm when sitting still. Now

11/17/2021

Check engine light comes on almost everyday. After at least 5 minutes driving, this trucks engine will shut down with out notice. Usually when making a turn or coming to a stop light. When this happens you loose all steering control. You have to shift to neutral and try and restart. This has caused me to almost rearend a highway patrol vehicle. Very dangerous. I have had this vehicle in to the local Ford dealership on numerous occasions; however they will NOT run diagnostics to see what is happening. Have ad independant mechanic and my scan tool run tests and it always shows code P0191 fuel pressure rail faault. Maintenance is always uptodate ad fuel filters changed by dealer every 5,000 miles. Dealer and MF not honoring warrenty.

7/12/2022

8 more complaints are available in this category.

ELECTRICAL SYSTEM

10 Reports9% of total

Previewing the first 2 complaint summaries.

Check engine light comes on almost everyday. After at least 5 minutes driving, this trucks engine will shut down with out notice. Usually when making a turn or coming to a stop light. When this happens you loose all steering control. You have to shift to neutral and try and restart. This has caused me to almost rearend a highway patrol vehicle. Very dangerous. I have had this vehicle in to the local Ford dealership on numerous occasions; however they will NOT run diagnostics to see what is happening. Have ad independant mechanic and my scan tool run tests and it always shows code P0191 fuel pressure rail faault. Maintenance is always uptodate ad fuel filters changed by dealer every 5,000 miles. Dealer and MF not honoring warrenty.

7/12/2022

On 7 Aug 2022, I lost cruise control, Navigation function (GPS0 and had problems with other elecrical functions on instrument cluster. I took truck to my local ford dealer; they rand Ford diagnostics on truck and it had 3 module errors listed. They cleared the codes and tried to get me to accept the vehicle. Road tested it and there efforts of clearing the codes did not fix any thing. Brought back in shop on 10 Aug 2022. Diagnostics ran again now narrowed it down to APIM failing 3 times in 2 days. Now deallership says they have to order part from California if they have them in stock. This truck only has 22,000 miles on it. Has had multiple failures of equipment for fuel system listing codes P0191 2 and threee times per day. Dealer will NOT attempt to fix that problem. Just says deal with it.

8/11/2022

8 more complaints are available in this category.

UNKNOWN OR OTHER

9 Reports8% of total

Previewing the first 2 complaint summaries.

An unknown electrical issue possibly sensor, module or wiring related causes several faults in the system and they appear on the dash. These faults disable many safety features built in to the vehicle and a few convenience features as well. The faults displayed are: "pre-collision assist not available", "hill start assist warning", "service advance trac" and "drive mode not available" When this happens randomly the vehicle will stop producing forward acceleration and slow down very quickly as if I took my foot off the accelerator. When this occurs it is a dangerous situation made worse at higher speeds and I must quickly move off the road without causing an accident. The vehicle has been to the dealer 4 times since new (4765 current miles) and there is no definite solution at this time.

9/2/2021

When my F-350 had only 2,265 miles on it, I was getting in my truck and closed the door. When it closed, the rear window shattered. There was no object that had been thrown at or through the window(no lawn service around that day, etc.). I immediately called the local Ford dealership(Landers Ford in Collierville, TN) and was told that the window would not be covered under warranty. I then called the Ford customer service # on the ford.com website and they stated that this was not a quality issue and that it would not be covered under warranty. It is clear by looking at the picture that the window shattered out as though the pressure in the truck when the door closed caused the break. This occurred on 9/10/21 and I took the truck to Safelite on 9/13/21 to have the window replaced at my own expense.

9/14/2021

7 more complaints are available in this category.

FUEL/PROPULSION SYSTEM

9 Reports8% of total

Previewing the first 2 complaint summaries.

This truck on a daily basis, shuts down with out warning. Check engine light comes on some time, some times get P0191, P0171 and other codes dealing with fuel rail and pressure. Vehicle had less than 10000 miles when started. Dealer don't know what to do. Shuts off when you are in a turn and leaves you with out steering, and shuts off when coming to a stop sign, or trying to park. Fuel filters have been changed 2 times in 2 months. Truck is not safe to drive because it keeps surging and cutting off. Idle speed varies as much as 250 rpm when sitting still. Now

11/17/2021

Check engine light comes on almost everyday. After at least 5 minutes driving, this trucks engine will shut down with out notice. Usually when making a turn or coming to a stop light. When this happens you loose all steering control. You have to shift to neutral and try and restart. This has caused me to almost rearend a highway patrol vehicle. Very dangerous. I have had this vehicle in to the local Ford dealership on numerous occasions; however they will NOT run diagnostics to see what is happening. Have ad independant mechanic and my scan tool run tests and it always shows code P0191 fuel pressure rail faault. Maintenance is always uptodate ad fuel filters changed by dealer every 5,000 miles. Dealer and MF not honoring warrenty.

7/12/2022

7 more complaints are available in this category.

POWER TRAIN

8 Reports8% of total

Previewing the first 2 complaint summaries.

I was recently informed by Ford that my vehicle is subject to a recall (21S31) because the rear axle may deform and detach from the vehicle. I believe the Ford Safety Recall Report (and NHTSA Recall Number) is 21V-536. My concern is related to the proposed remedy. Ford States that additional welds will be applied to the axle. Based on the information provided, I believe this will only mask the symptoms of a failure (detachment of the axle), and not the problem itself (crushing of the axle tubes due to insufficient tube wall thickness). I am a licensed professional engineer, which is to say that I have a basic understanding of material behaviour. With this in mind, I would respectfully ask you to consider the following: 1) Primary: Outright replacement of the defect axle housing with a unit that is manufactured with the "old design" axle tubes. If item 1 above is not chosen, I propose the following alternatives (in combination): A) Requiring replacement of the axle housing if paint loss is observed at the locations where the u-bolts are used to strap the axle to the spring perches. Many people have observed paint loss at this location, and it would indicate deformation of the tubing. B) Warrantying the axle housing for an extended period of time - perhaps 8 years or 100000 miles as was done by Toyota due to the frame defects which affected their pickups. C) Certification by a licensed professional engineer that the proposed remedy (welding the axle) will prevent deformation under rated conditions. I believe this is important because it will require a "person" to certify the adequacy of the repair. My intent in suggesting this is to ensure that the defect is not left in place. Again, the proposed remedy seems only to "mask" the problem. I fear it could result in another "Firestone Situation", where the public is put at unnecessary risk. I greatly appreciate you considering this request.

8/3/2021

I have owned the truck for just over a year and in that time occasionally when I put my vehicle in park and get out of the truck it will start moving without me touching it. It has happen 5 or 6 times within the year. I took it to the dealer and they told me there is nothing they can do unless the could recreate the problem. This situation is extremely dangerous especially if someone is in the way. One time when it did it the truck ran into my camper and broke the tongue jack. Another time it took off and ran into my hunting camp gate severely bending a solid steel gate. I was just about to step in front of the truck to go unlock the gate when it happened. One second longer I would have probably been killed. The last time it happened was about 2 months ago and after putting it in park twice it continued to roll and I had to put my plow down to keep it from moving

4/27/2022

6 more complaints are available in this category.

SUSPENSION

5 Reports5% of total

Previewing the first 2 complaint summaries.

The rear axle repair was not completed and yet they reported that the dealer fixed it. Not true. The truck was taken in for repairs but the dealer was not able to fix it and told me that. They said I will have to get it fixed on my own. The rear axle is a known flaw and was required to repair or replace by the NHTSA. I wonder how many other trucks have also had incomplete repairs and then reported as fixed?

7/22/2022

While driving on a road with moderate potholes at about 45 miles per hour the steering wheel and front end stared violently shaking and did not stop until i came to a stop. I took it to the local ford dealership (Cavender Ford) and the service manager said it is a known issue and there is not a real solution for it. Apparently upon research it has been a known issue called Death Wobble. If I had been on a curve, in traffic or in bad weather there would have most certainly been an accident. I was referred to another Ford dealership 90 miles away to see if their more experienced technicians could fix the problem.

11/1/2022

3 more complaints are available in this category.

STEERING

4 Reports4% of total

Previewing the first 2 complaint summaries.

The contact owns a 2021 Ford F-350. The contact stated that while driving at an undisclosed speed, the steering wheel was vibrating. There were no warning lights illuminated. The vehicle was taken to an independent mechanic who informed the contact that the failure was due to the driveshaft. The vehicle was taken to the local dealer who informed the contact that there needs to be weight in the truck. The contact attached a trailer to the vehicle however, the failure still occurred. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 89.

1/20/2022

Driving down the highway at a speed of 70,truck began to vibrate uncontrollably changed lanes. Continue to vibrate uncontrollably in the front of the truck. Pulled safely to side of road. Expected to see flat tires. No flat tires. Turn truck off. Turn truck back on no issues again. I believe this was my first experience with the death wobble.

1/16/2024

2 more complaints are available in this category.

VISIBILITY/WIPER

4 Reports4% of total

Previewing the first 2 complaint summaries.

The contact owns a 2021 Ford F-350. The contact received notification of NHTSA Campaign Number 22V250000 (Visibility) however, the part to do the recall repair was unavailable. The local dealer was contacted and it was confirmed that the part was not available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The contact stated that the vehicle had experienced the failure listed in the recall and the wipers operated erratically while randomly stopping and starting while activated. The failure mileage was 10,000. Parts distribution disconnect.

9/27/2022

VIN [XXX] Ford has not fixed the recall. This is a work truck. The truck has been sitting on the driveway for 6 months as we are not able to drive it with a safety recall. Company policy is that even if it's not a tragic safety recall, they don't allow people to drive the truck. We need Ford to fix this recall ASAP INFORMATION Redacted PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6).

11/1/2022

2 more complaints are available in this category.

SERVICE BRAKES

4 Reports4% of total

Previewing the first 2 complaint summaries.

On my 21 f350 while towing a 36 foot gooseneck unloaded I noticed a burning wire smell. And I realized I had no more trailer brakes. After diagnosis of the system I found the factory trailer brake controller had melted on the inside. Causing it to loose braking.

6/27/2024

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 unavailable. 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 stated that while depressing the accelerator pedal after stopping, the vehicle was slow to respond. The contact stated that there was several minutes before the vehicle responded as needed. The contact stated that the failure occurred after coming to a full stop. The contact stated there was no warning light illuminated. Additionally, the contact stated that while towing a loaded trailer, the vehicle was losing traction, and the rear end was swaying to the right and to the left. The contact had not taken the vehicle to a dealer to be diagnosed or repaired. The contact stated that during the failure there were several unknown warning lights illuminated. The contact stated that 3 months after purchasing the vehicle, the vehicle experienced brakes failure. The contact had taken the vehicle to an independent mechanic who diagnosed the vehicle and determined that all four brake pads and calipers needed to be replaced. The vehicle was repaired; however, the contact stated that the failure recurred while depressing the brake pedal, with an abnormal metal-on-metal sound coming from the brakes. The contact stated that the brakes were independently slowing the vehicle. The failure mileage was approximately 37,000. VIN tool confirms parts not available.

1/14/2025

2 more complaints are available in this category.

LATCHES/LOCKS/LINKAGES:TAILGATE:LATCH

3 Reports3% of total

Previewing the first 2 complaint summaries.

Electronic tailgate on the 2021 Ford F-350 is opening on its own while driving. Doesn't matter the speed...its happened at 10 mph and at 60 mph. This is a critical issue since it is damaging RVs. My latest occurrence is noted in the Additional Details section, but it has now happened three (3) times since I purchased brand new with 6 miles on it...now has about 10,900 miles. There was a recall on model years 2019 and prior for this very symptom caused by moisture getting into the wiring harness.

8/16/2021

Tailgate has randomly opened twice. Tailgate function on the remote was definitely not being pressed.

8/16/2021

1 more complaint is available in this category.

VEHICLE SPEED CONTROL

3 Reports3% of total

Previewing the first 2 complaint summaries.

On 7 Aug 2022, I lost cruise control, Navigation function (GPS0 and had problems with other elecrical functions on instrument cluster. I took truck to my local ford dealer; they rand Ford diagnostics on truck and it had 3 module errors listed. They cleared the codes and tried to get me to accept the vehicle. Road tested it and there efforts of clearing the codes did not fix any thing. Brought back in shop on 10 Aug 2022. Diagnostics ran again now narrowed it down to APIM failing 3 times in 2 days. Now deallership says they have to order part from California if they have them in stock. This truck only has 22,000 miles on it. Has had multiple failures of equipment for fuel system listing codes P0191 2 and threee times per day. Dealer will NOT attempt to fix that problem. Just says deal with it.

8/11/2022

Transmission lunges forward at times even when putting into park position and starting vehicle. Also, when driving down the road vehicle jerks or bucks and throws you forward. Periodically, there is a complete loss of transmission function then you hear large bang and truck jerks forward. This has been reported to Fenton Ford Camden, NY several times and they cannot seem to find issue and stated if it doesnt duplicate happening when they have vehicle there is nothing they can do about it. This has become a serious safety concern when truck jerks forward when starting and park position and lunges forward in traffic. Thank you for your anticipated, cooperation and help resolving this serious safety matter. Thank You, [XXX] - Vehicle Owner INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

7/8/2024

1 more complaint is available in this category.

VISIBILITY

2 Reports2% of total

Previewing the first 2 complaint summaries.

The contact’s boss owns a 2021 Ford F-350. The contact stated that her boss received notification of NHTSA Campaign Number: 22V2500000 (Visibility) 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 local dealer was notified of the issue and confirmed that parts were not yet available. The manufacturer was notified of the issue, but no further assistance was provided. The contact had not experienced a failure. Parts distribution disconnect.

10/18/2022

The contact owns a 2021 Ford F-350. The contact received notification of NHTSA Campaign Number: 22V250000 (Visibility) however, the part to do the recall repair was not yet available. The contact stated while driving approximately 30 MPH while it was sleeting, the windshield wipers were engaged on intermittent speed mode; however, the passenger’s side wiper blade stopped functioning. There were no warning lights illuminated. An unknown local dealer was contacted. The vehicle was not diagnosed or repaired. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was notified of the failure and informed the contact that the parts were on a national back order. The failure mileage was approximately 22,000. Parts distribution disconnect.

12/27/2022

LANE DEPARTURE: BLIND SPOT DETECTION

2 Reports2% of total

Previewing the first 2 complaint summaries.

While driving my 21 F350 my truck would go into limp mode. The climate control stopped working, passenger window stopped, blind spot monitors, along with the mirror. After running forscan it showed every code possible. After an exhaustive search I finally found the main plug under the bed just above the spare tire. The wires inside of the insulation had corroded away to the point it had to be stripped back at least 1/2 inch before getting decent wires that wouldn't crumble when touched. This is a terrible place to put a plug that controls so much.

6/26/2024

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.

8/29/2025

BACK OVER PREVENTION

2 Reports2% of total

Previewing the first 2 complaint summaries.

The contact owns a 2021 Ford F-350. The contact stated when the vehicle was shifted into reverse(R), the back-up camera image was blurry. The contact wiped the camera lens; however, the image remained blurry. The contact had not taken the vehicle to a local dealer. The vehicle was not diagnosed or repaired. The manufacturer was not informed of the failure. The failure mileage was approximately 93,000.

11/12/2024

The contact owns a 2021 Ford F-350. The contact stated that the back over prevention camera failed to function as intended. In addition, an error message indicated that the camera was unavailable and to contact the dealer. The contact stated that the back over prevention camera screen would display a black screen or a black screen with lines. The vehicle was taken to the dealer where it was diagnosed with a failed wiring harness. The contact was informed that the wiring harness needed to be replaced. The vehicle was repaired; however, the failure reoccurred. The vehicle was taken back to the dealer several times; however, the failure was not duplicated. The vehicle was not diagnosed or repaired by an independent mechanic or the dealer. The manufacturer was made aware of the failure but provided no assistance. The contact was advised to contact the NHTSA Hotline to report the failure. The failure mileage was approximately 130,312.

4/16/2025

EQUIPMENT

1 Report1% of total

Previewing the first 1 complaint summaries.

My setup: truck is level, trailer is 3/8" drop in front, and hitch ball up leaving one hole open from top. After installing product, ensuring proper setup, there is concern for towing safety, as the bottom of the drawbar drop is ~8-1/2" from ground, with reports from others that this setup has on numerous occasions, caused the drop portion of bar to contact pavement under normal towing conditions across the U.S. This has caused concern for possible catastrophic failure of drawbar drop when towing, believing that the welds on drawbar could become weakened and result in a disconnect of tow vehicle and trailer. I contacted the company, asking if they had plans to offer a 0" (would be an actual 3" length drop per their specs on the 6" and 8" drops) drop, or if they could say how much of the excess could be removed/cut from the drop safely. Their response is that there are no current plans to offer other drops and modifying the drawbar would void warranty. Others on various social media have warned of the drop making contact with pavement during the likes of National and State park entries/exits, as well as intersection transitions, etc.. I continued with my order/install, believing they had possibly installed incorrectly, but now see the concern, and do not want to void warranty, and in turn do not want to have a catastrophic failure that could kill someone..

6/28/2021

VISIBILITY:SUN/MOON ROOF ASSEMBLY

1 Report1% of total

Previewing the first 1 complaint summaries.

The contact owns a 2021 Ford F-350. The contact stated while driving 72 MPH, the contact heard an abnormal sound coming from the vehicle. The contact pulled over and upon inspection of the vehicle discovered that the sliding glass on the panoramic sunroof had shattered without incident. As the contact continued driving, the contact could hear the headliner shaking as the glass began flying off the vehicle due to the failure. The contact was forced to pull off the road again and clear all the shattered glass pieces from the top of the vehicle. The contact then took the vehicle to a dealer where he was informed that they would perform an inspection of the vehicle to determine the failure. A week later, the contact was informed by the dealer that the manufacturer had denied repair of the vehicle and that the failure was not a mechanical defect. The vehicle had yet to be repaired and remained in the possession of the dealer. The failure mileage was 6,237. The VIN was not available.

8/31/2021

SEATS

1 Report1% of total

Previewing the first 1 complaint summaries.

The contact owns a 2021 Ford F-350 towing a boat. The contact stated while driving 60 mph, applied the brakes however crashed head-on with a 2015 Toyota Scion. The contact stated the rear seats failed to lockdown. The contact had the tools under the seat and was released into the vehicle during the crash. The air bags deployed. The passenger sustained broken ribs, right ankle sprain or fractured, and the seatbelt bruised the chest. The driver struck the steering wheel and sustained chest pains, lower, mid, and upper back issues, and neck injuries. Medical attention was provided for both occupants. The driver of the Toyota succumbed to his/her injuries. A police report was filed. There was no reported fire. The vehicle was towed to an independent lot. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure and referred the contact to NHTSA. The failure mile was approximately 6,600.

1/10/2022

SEATS:CRITICAL FASTENERS

1 Report1% of total

Previewing the first 1 complaint summaries.

The contact owns a 2021 Ford F-350 towing a boat. The contact stated while driving 60 mph, applied the brakes however crashed head-on with a 2015 Toyota Scion. The contact stated the rear seats failed to lockdown. The contact had the tools under the seat and was released into the vehicle during the crash. The air bags deployed. The passenger sustained broken ribs, right ankle sprain or fractured, and the seatbelt bruised the chest. The driver struck the steering wheel and sustained chest pains, lower, mid, and upper back issues, and neck injuries. Medical attention was provided for both occupants. The driver of the Toyota succumbed to his/her injuries. A police report was filed. There was no reported fire. The vehicle was towed to an independent lot. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure and referred the contact to NHTSA. The failure mile was approximately 6,600.

1/10/2022

POWER TRAIN:DRIVELINE:DRIVESHAFT

1 Report1% of total

Previewing the first 1 complaint summaries.

The contact owns a 2021 Ford F-350. The contact stated that while driving at an undisclosed speed, the steering wheel was vibrating. There were no warning lights illuminated. The vehicle was taken to an independent mechanic who informed the contact that the failure was due to the driveshaft. The vehicle was taken to the local dealer who informed the contact that there needs to be weight in the truck. The contact attached a trailer to the vehicle however, the failure still occurred. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 89.

1/20/2022

ELECTRICAL SYSTEM: INTEGRATED TRAILER BRAKE CONTROL

1 Report1% of total

Previewing the first 1 complaint summaries.

The contact owns a 2021 Ford F-350. The contact stated while driving 65 MPH, the trailer disconnected warning light illuminated. The contact disconnected the trailer and drove the vehicle to the dealer. The dealer could not duplicate the failure with the trailer being disconnected. A diagnostic test was performed however, no failure was found. The manufacture was made aware of the failure. The failure mileage was 44,000.

3/9/2022

STRUCTURE:BODY:TAILGATE

1 Report1% of total

Previewing the first 1 complaint summaries.

The contact owns a 2021 Ford F-350. The contact stated that while the vehicle was hauling a trailer with a tractor, the tailgate unintendedly opened, causing damage to the tailgate. The vehicle was taken to the dealer where it was diagnosed that since there was no water leaking under the front passenger's side floor mat, the contact needed to pay out-of-pocket for tailgate replacement. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 23,000.

5/5/2022

TIRES:TREAD/BELT

1 Report1% of total

Previewing the first 1 complaint summaries.

The contact owns a 2021 Ford F-350 equipped with AMP Tires, Tire Line: Terrain Pro A/TP, Tire Size: P35/12/R24, DOT Number: 04N9MATTW. The contact stated that while driving 70 MPH, the vehicle began to shudder. There was no warning light illuminated. As the vibration continued, the contact began to lose control of the vehicle and the vehicle nearly swayed off the road. The contact was able to pull to shoulder of the highway. Upon inspection of the vehicle, the contact's wife discovered a bulge on the center tread of the front driver's side tire. The contact replaced the tire with a spare tire and drove to the residence. However, the same failure occurred on the front passenger's side tire two weeks later. The contact notified the tire shop who had sold him the tires, and a mechanic was sent to his residence to inspect the tires. The mechanic diagnosed that the failure occurred as both tires' belts popped up. The driver's side tire was replaced but the passenger's tire was not replaced. The tire failure mileage was 9,000. The vehicle failure mileage was 34,000.

3/27/2023

ELECTRICAL SYSTEM:WIRING:FUSES AND CIRCUIT BREAKERS

1 Report1% of total

Previewing the first 1 complaint summaries.

The contact owns a 2021 Ford F-350. The contact stated that on several occasions while parked, the vehicle was turned off but remained running. The check engine warning light was illuminated. The vehicle was taken to a dealer where it was diagnosed that there was an electrical short due to condensation going into the fuse box. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was approximately 195,200.

8/14/2023

STRUCTURE

1 Report1% of total

Previewing the first 1 complaint summaries.

The contact owns a 2021 Ford F-350. The contact stated that while entering the vehicle, he observed a puddle of water in the front middle seat which was folded down to use as a cup holder. The contact stated that it had rained the night before but not enough to form a puddle outside around the vehicle or inside the vehicle. The contact stated that the windows were locked securely. The contact became aware that water was dripping from the sunglasses compartment located on the ceiling above the rear-view mirror. The contact had not taken the vehicle to a local dealer or independent mechanic. The vehicle was not diagnosed or repaired. The contact called the manufacturer and was advised to take the vehicle to a dealer to be diagnosed. The contact was also directed to call the NHTSA Safety Hotline for assistance. The failure mileage was 43,808.

12/12/2023

LANE DEPARTURE: WARNING

1 Report1% of total

Previewing the first 1 complaint summaries.

While driving my 21 F350 my truck would go into limp mode. The climate control stopped working, passenger window stopped, blind spot monitors, along with the mirror. After running forscan it showed every code possible. After an exhaustive search I finally found the main plug under the bed just above the spare tire. The wires inside of the insulation had corroded away to the point it had to be stripped back at least 1/2 inch before getting decent wires that wouldn't crumble when touched. This is a terrible place to put a plug that controls so much.

6/26/2024

BACK OVER PREVENTION: REARVIEW SYSTEM BRAKING

1 Report1% of total

Previewing the first 1 complaint summaries.

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.

8/29/2025

About This Data

Data and Methodology

MethodologyHow we score →

Scores are derived from NHTSA recalls and owner complaints, normalized by vehicle segment averages.

FAQ

What are the most common owner complaints for the 2021 Ford F-350?

The most reported complaint category for the 2021 Ford F-350 is FUEL SYSTEM, DIESEL, with 19 owner reports. That is about 18% of all complaints logged here. Other recurring themes include FUEL SYSTEM, DIESEL, ENGINE, ELECTRICAL SYSTEM.

Are complaints about the 2021 Ford F-350 a serious warning sign?

Potentially. 63 complaint reports fall into higher-attention systems such as brakes, steering, engine, powertrain, fuel, suspension, airbags, or electrical components. That does not prove every vehicle has a defect, but repeated complaints in those systems justify a more careful pre-purchase inspection.

How should buyers use complaint data for the 2021 Ford F-350?

Use complaints as an early pattern to investigate, not a standalone verdict. Start with the top complaint categories, compare those themes against the recall report and maintenance guide, then inspect service records for evidence that the same problem areas were already addressed. If the same issue appears repeatedly across complaints and recalls, treat it as a real ownership-risk flag.

Are complaints about the 2021 Ford F-350 severe?

63 complaint reports involve higher-attention systems such as brakes, steering, engine, powertrain, fuel, suspension, airbags, or electrical components, which is enough to justify a focused inspection before purchase.

Complaint list entries are sourced from owner-submitted NHTSA ODI records.

Read complaint summaries

Ford F-350: How should complaint data influence buying decisions?

Use complaint patterns together with recalls and maintenance guidance to estimate ownership risk and inspection priorities.

Carfocal links complaint data directly to recall and maintenance routes for the same model year.

Return to full vehicle report
Complaint entries
106
Top-topic view
5 grouped topics shown
Primary source
NHTSA ODI owner complaint records

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In this guide

  1. 01Overview
  2. 02Common Problems
  3. 03Owner Complaints
  4. 04Data and Methodology

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