Owners have filed 24 complaints
about the 2020 Ford F-550 with NHTSA between 2021 and 2026.
The largest single group is the fuel & propulsion.
Across this model's run it ranks 5 of 6 worst.
The letter says how bad. This says what kind — whether this year drew
an unusual number of complaints, unusually dangerous
ones, or failures that arrived unusually early.
The dashed ring is 50 — the national norm. Further out is worse.
Complaint volume — 67
Against the median year of the Ford F-550. 50 means typical for this
model; 100 means roughly double.
Severity — 22
4.2% of these complaints
involved a crash, fire, injury or death, against a national rate of
9.7%.
Early failure — 68
40% of failures with a mileage on record happened under
36,000 miles, against a national rate of
29%.
Complaints filed with NHTSA, by model year. Bar colour is the FaultScore grade:
A
B
C
D
F
ungraded
What breaks on a 2020 Ford F-550
Every complaint is filed against a part. Follow any row for the complaints about that part alone.
Fuel & Propulsion
833.3%
0 crashes, 1 fires · median 38,239 mi
Suspension
312.5%
Median failure at 2,200 miles
Body & Structure
312.5%
Transmission & Drivetrain
312.5%
Median failure at 90,000 miles
Engine & Cooling
312.5%
Median failure at 85,172 miles
Other & Unspecified
14.2%
Windows, Mirrors & Wipers
14.2%
Brakes
14.2%
Median failure at 2,393 miles
Electrical System
14.2%
When it fails
Odometer readings owners gave when they filed. About half of all
complaints include one.
1,000 – 9,999 miles
220.0%
10,000 – 24,999 miles
110.0%
25,000 – 49,999 miles
220.0%
75,000 – 99,999 miles
330.0%
100,000 – 149,999 miles
110.0%
150,000+ miles
110.0%
When owners complained
A spike years after the car went on sale usually means a part wearing
out on schedule across the whole fleet — the kind of pattern no single
owner can see from inside their own car.
Apr 2021peak 3Jul 2026
NHTSA investigations into the 2020 Ford F-550
An investigation is the step before a recall: the agency has seen enough
complaints to look into a pattern itself. An open one means it thinks
something may be wrong and nothing has been fixed yet.
1
investigation is
still open.
PE24014Opened 9 May 2024Still openFUEL SYSTEM, DIESEL
Sogefi Secondary Diesel Fuel Filter Leak
The Office of Defect Investigations (ODI) has received 27 complaints alleging diesel fuel leaks due to a fracture in the secondary fuel filter housing in model year (MY) 2015-2021 Ford Motor Company (Ford) F-250, 350, 450, and 550 Super Duty vehicles equipped with 6.7L diesel engines. Of these complaints, 12 describe an engine compartment fire. The proximity of the secondary fuel filter to high heat sources creates a potential for autoignition thermal events and fires. ODI has contacted the vehicle manufacturer, Ford, and the filter manufacturer, Allevard Sogefi USA (Sogefi), and learned that...
Complaints that involved harm
Reports where the owner recorded a crash, a fire, an injury or a death.
Simi Valley, CAFire
FUEL/PROPULSION SYSTEM
I had my truck serviced, engine oil and fuel filters replaced, I picked up truck and while driving home, engine loss of power came on screen, truck then stalled, I observed smoke coming from under the hood, I exited vehicle to try and open hood, but flames were already present, I called 911 fire department came and put fire out. truck is a total loss. Fire Capt observed that fire seem to have started near the fuel filter housing, I was fortunate to escape the cab along with my dog, I have read several reports about filter housing leaking and starting fires, my brother inlaw, actually had the same issue, filter split causing fuel to leak, but fortunately he had just started the truck and was not driving very long before he smelled the fuel and was able to shut down the engine before it got hot and repolace the faulty filter housing.
NHTSA complaint #11730539 — an unverified report by a vehicle owner.
The most recent complaints
In the owners' own words, exactly as filed with NHTSA.
at 150,000 milesEmmett, ID
FUEL SYSTEM, DIESEL
The contact owns a 2020 Ford F-550. The contact stated that while the vehicle was parked, it was discovered that there was metal deposits inside the system causing the fuel pump failure. The contact associated the failure with NHTSA Campaign Number: 24V957000 (Fuel System, Diesel). The dealer was contacted but failed to retrieve the correct diagnostic trouble codes related to the recall. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 150,000.
NHTSA complaint #11753603 — an unverified report by a vehicle owner.
Simi Valley, CAFire
FUEL/PROPULSION SYSTEM
I had my truck serviced, engine oil and fuel filters replaced, I picked up truck and while driving home, engine loss of power came on screen, truck then stalled, I observed smoke coming from under the hood, I exited vehicle to try and open hood, but flames were already present, I called 911 fire department came and put fire out. truck is a total loss. Fire Capt observed that fire seem to have started near the fuel filter housing, I was fortunate to escape the cab along with my dog, I have read several reports about filter housing leaking and starting fires, my brother inlaw, actually had the same issue, filter split causing fuel to leak, but fortunately he had just started the truck and was not driving very long before he smelled the fuel and was able to shut down the engine before it got hot and repolace the faulty filter housing.
NHTSA complaint #11730539 — an unverified report by a vehicle owner.
at 85,172 milesKnox, IN
FUEL SYSTEM, DIESEL
The contact owns a 2020 Ford F-550. The contact stated that while driving at 20 MPH, the fuel injector became inoperable. The check engine warning light became illuminated. The vehicle was taken to the local dealer, where it was diagnosed, and determined that the fuel injectors needed to be replaced. The vehicle was repaired. The manufacturer was contacted and confirmed that the part to repair the vehicle under NHTSA Campaign Number: 24V957000 (Fuel System, Diesel) was on back order and that a second notification would be forwarded once parts became available. The failure mileage was approximately 85,172.
NHTSA complaint #11728765 — an unverified report by a vehicle owner.
at 85,172 milesKnox, IN
ENGINE
The contact owns a 2020 Ford F-550. The contact stated that while driving at 20 MPH, the fuel injector became inoperable. The check engine warning light became illuminated. The vehicle was taken to the local dealer, where it was diagnosed, and determined that the fuel injectors needed to be replaced. The vehicle was repaired. The manufacturer was contacted and confirmed that the part to repair the vehicle under NHTSA Campaign Number: 24V957000 (Fuel System, Diesel) was on back order and that a second notification would be forwarded once parts became available. The failure mileage was approximately 85,172.
NHTSA complaint #11728765 — an unverified report by a vehicle owner.
Colton, CA
FUEL SYSTEM, DIESEL
The contact owns a 2020 Ford F-550. 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 and confirmed that the remedy 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 had not experienced a failure.
NHTSA complaint #11707907 — an unverified report by a vehicle owner.
West Cornwall, CT
POWER TRAIN
At ~93,000 miles, my 2020 Ford F-550 (7.3L “Godzilla” V8) suffered catastrophic engine failure due to a roller lifter bearing failure, causing internal valvetrain damage and requiring full engine replacement. Ford dealer stated they recommended 90% coverage of the repair under goodwill through corporate, but later reduced coverage to 40% without explanation. After repairs, Ford corporate recommended a 3-year/36,000-mile PremiumCare warranty, then rescinded it a week later and offered only free oil changes. The 7.3L engine in my truck shares the same design as the F-53/F-59 motorhome chassis, which have multiple Technical Service Bulletins (TSBs) for lifter bearing failure, overheating of cylinders #2–3, and low oil pressure at idle. My vehicle shows identical symptoms but was excluded from those VIN ranges, suggesting Ford is segmenting related defects to limit recall exposure. Inspection revealed a cracked and arcing spark-plug wire on cylinder #2, matching the motorhome TSB’s overheating issue. This arcing poses a fire risk and likely contributed to localized heat and mechanical failure. The truck was often driven in Eco Mode, which holds low RPMs under load. This can increase cylinder pressure, reduce oil flow, and exacerbate heat in cylinders #2–3—factors that align with the failure pattern. This combination of design-related overheating, lifter bearing failure, oil-pressure fluctuation, and spark-wire arcing presents a clear safety hazard. Engine stall or fire could occur under towing or heavy-load conditions. NHTSA investigation is warranted into Ford’s 7.3L Godzilla engine design and VIN-exclusion practices.
NHTSA complaint #11692097 — an unverified report by a vehicle owner.
West Cornwall, CT
ELECTRICAL SYSTEM
At ~93,000 miles, my 2020 Ford F-550 (7.3L “Godzilla” V8) suffered catastrophic engine failure due to a roller lifter bearing failure, causing internal valvetrain damage and requiring full engine replacement. Ford dealer stated they recommended 90% coverage of the repair under goodwill through corporate, but later reduced coverage to 40% without explanation. After repairs, Ford corporate recommended a 3-year/36,000-mile PremiumCare warranty, then rescinded it a week later and offered only free oil changes. The 7.3L engine in my truck shares the same design as the F-53/F-59 motorhome chassis, which have multiple Technical Service Bulletins (TSBs) for lifter bearing failure, overheating of cylinders #2–3, and low oil pressure at idle. My vehicle shows identical symptoms but was excluded from those VIN ranges, suggesting Ford is segmenting related defects to limit recall exposure. Inspection revealed a cracked and arcing spark-plug wire on cylinder #2, matching the motorhome TSB’s overheating issue. This arcing poses a fire risk and likely contributed to localized heat and mechanical failure. The truck was often driven in Eco Mode, which holds low RPMs under load. This can increase cylinder pressure, reduce oil flow, and exacerbate heat in cylinders #2–3—factors that align with the failure pattern. This combination of design-related overheating, lifter bearing failure, oil-pressure fluctuation, and spark-wire arcing presents a clear safety hazard. Engine stall or fire could occur under towing or heavy-load conditions. NHTSA investigation is warranted into Ford’s 7.3L Godzilla engine design and VIN-exclusion practices.
NHTSA complaint #11692097 — an unverified report by a vehicle owner.
West Cornwall, CT
ENGINE
At ~93,000 miles, my 2020 Ford F-550 (7.3L “Godzilla” V8) suffered catastrophic engine failure due to a roller lifter bearing failure, causing internal valvetrain damage and requiring full engine replacement. Ford dealer stated they recommended 90% coverage of the repair under goodwill through corporate, but later reduced coverage to 40% without explanation. After repairs, Ford corporate recommended a 3-year/36,000-mile PremiumCare warranty, then rescinded it a week later and offered only free oil changes. The 7.3L engine in my truck shares the same design as the F-53/F-59 motorhome chassis, which have multiple Technical Service Bulletins (TSBs) for lifter bearing failure, overheating of cylinders #2–3, and low oil pressure at idle. My vehicle shows identical symptoms but was excluded from those VIN ranges, suggesting Ford is segmenting related defects to limit recall exposure. Inspection revealed a cracked and arcing spark-plug wire on cylinder #2, matching the motorhome TSB’s overheating issue. This arcing poses a fire risk and likely contributed to localized heat and mechanical failure. The truck was often driven in Eco Mode, which holds low RPMs under load. This can increase cylinder pressure, reduce oil flow, and exacerbate heat in cylinders #2–3—factors that align with the failure pattern. This combination of design-related overheating, lifter bearing failure, oil-pressure fluctuation, and spark-wire arcing presents a clear safety hazard. Engine stall or fire could occur under towing or heavy-load conditions. NHTSA investigation is warranted into Ford’s 7.3L Godzilla engine design and VIN-exclusion practices.
NHTSA complaint #11692097 — an unverified report by a vehicle owner.
at 100,000 milesMurphy, NC
POWER TRAIN
The contact owns a 2020 Ford F-550. The contact stated that while starting the vehicle, the vehicle unintentionally rolled away while the transmission was in park(P). No warning light was illuminated. Additionally, the vehicle jerked while driving uphill. The vehicle also jerked violently while downshifting from third to second gear. The vehicle was taken to the dealer, who determined that the transmission needed to be replaced. The vehicle was not repaired. The contact related the failure to NHTSA Campaign Number: 22V256000 (Power Train); however, the VIN was not included in the recall. The manufacturer was made aware of the failure and advised the contact to file a complaint with the NHTSA Hotline. The failure mileage was approximately 100,000.
NHTSA complaint #11661025 — an unverified report by a vehicle owner.
Grand Rapids, MI
ENGINE
There was a recall on this veh. over a year ago and they still do not have the parts to repair it. My fuel milage went from 13.8 down to 9.6 and still going down. I have called Ford about this and they say they are still waiting on parts. I reminded them it has been over a year now and should have had the parts in a long time ago.
NHTSA complaint #11657747 — an unverified report by a vehicle owner.
Grand Rapids, MI
FUEL/PROPULSION SYSTEM
There was a recall on this veh. over a year ago and they still do not have the parts to repair it. My fuel milage went from 13.8 down to 9.6 and still going down. I have called Ford about this and they say they are still waiting on parts. I reminded them it has been over a year now and should have had the parts in a long time ago.
NHTSA complaint #11657747 — an unverified report by a vehicle owner.
at 38,239 milesNashua, NH
FUEL SYSTEM, DIESEL:DELIVERY:FUEL PUMP
The contact owns a 2020 Ford F-550. 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 made aware of the issue. The contact had experienced a failure. VIN tool confirms parts not available. The contact stated that while driving on a main road at 35 MPH a message displayed on the instrument panel which stated "reduced engine power" the contact proceeded to enter into a parking lot where the vehicle was parked, and left idle for a few minutes before attempting to restart, however the engine would start back up again. The vehicle was towed to an independent mechanic where it was diagnosed and the contact was advised that the fuel pump had failed and that it would need to be replaced by a Ford Dealership, and upon the vehicle arriving at Ford it was diagnosed a second time where it was confirmed that the failure originated from fuel pump failure, and that entire fuel system would have to be replaced. The vehicle was not repaired. The approximate failure mileage was 38,239.
NHTSA complaint #11650274 — an unverified report by a vehicle owner.
at 34,704 milesMilford, MI
FUEL SYSTEM, DIESEL
The contact owns a 2020 Ford F-550. The contact stated while driving 60-70 MPH, the contact noticed a strong fuel odor. The message "Fuel Pressure Low" was displayed. The contact was driven to the residence. The contact stated that upon inspecting the vehicle, he noticed that approximately 40 gallons of fuel had leaked out of the vehicle. The dealer was notified of the failure and informed the contact that the VIN was not included in a related recall. The contact later became aware that the VIN was included in NHTSA Campaign Number: 24V957000 (Fuel System, Diesel); which the contact related to the failure; however, the part to do the recall repair was not yet available. The 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 not made aware of the failure. The failure mileage was 34,704. VIN tool confirms parts not available.
NHTSA complaint #11642422 — an unverified report by a vehicle owner.
Bladensburg, MD
SUSPENSION
frame crack right behind cab. have two trucks with the same issue second vin ends in [XXX]. ford had a safety program 21B04 that expired which means they are aware of this issue and should issue a recall for it. ford has repeatedly refused to help with this issue. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
NHTSA complaint #11598253 — an unverified report by a vehicle owner.
Taylorsville, MS
UNKNOWN OR OTHER
Ford Motor Company has had a known issue with the truck frames cracking on the F-550 chassis. They acknowledged it by doing a recall, which either replaced or repaired the chassis frame or installed reinforcement braces if no cracks were visible. The recall expired in September of 2023. In October 2023 we noticed a crack on the frame just outside the recall reinforcement brace that Ford-certified technicians installed. We found another in November (reinforcement brace installed) and another in January (with Ford's new and improved frame produced due to a recall issue). Ford has denied making the repairs since the original warranty expired, even though this was the same related issue. We have been dealing with Ford Motor Company since October in hopes of resolving the issue but they continue to give us any resolution. The problem has not only caused a burden on our workforce but also caused great safety concerns. With Ford avoiding responsibility, they are allowing trucks to operate daily on our highway system, which becomes a safety concern for not only the driver but for many other motorists. The problem existed, but the issue was not resolved, all we are asking is that they take responsibility for making the repairs and permanently resolving the issue for the safety of all motorists.
NHTSA complaint #11587794 — an unverified report by a vehicle owner.
Taylorsville, MS
SUSPENSION
Ford Motor Company has had a known issue with the truck frames cracking on the F-550 chassis. They acknowledged it by doing a recall, which either replaced or repaired the chassis frame or installed reinforcement braces if no cracks were visible. The recall expired in September of 2023. In October 2023 we noticed a crack on the frame just outside the recall reinforcement brace that Ford-certified technicians installed. We found another in November (reinforcement brace installed) and another in January (with Ford's new and improved frame produced due to a recall issue). Ford has denied making the repairs since the original warranty expired, even though this was the same related issue. We have been dealing with Ford Motor Company since October in hopes of resolving the issue but they continue to give us any resolution. The problem has not only caused a burden on our workforce but also caused great safety concerns. With Ford avoiding responsibility, they are allowing trucks to operate daily on our highway system, which becomes a safety concern for not only the driver but for many other motorists. The problem existed, but the issue was not resolved, all we are asking is that they take responsibility for making the repairs and permanently resolving the issue for the safety of all motorists.
NHTSA complaint #11587794 — an unverified report by a vehicle owner.
Taylorsville, MS
STRUCTURE
Ford Motor Company has had a known issue with the truck frames cracking on the F-550 chassis. They acknowledged it by doing a recall, which either replaced or repaired the chassis frame or installed reinforcement braces if no cracks were visible. The recall expired in September of 2023. In October 2023 we noticed a crack on the frame just outside the recall reinforcement brace that Ford-certified technicians installed. We found another in November (reinforcement brace installed) and another in January (with Ford's new and improved frame produced due to a recall issue). Ford has denied making the repairs since the original warranty expired, even though this was the same related issue. We have been dealing with Ford Motor Company since October in hopes of resolving the issue but they continue to give us any resolution. The problem has not only caused a burden on our workforce but also caused great safety concerns. With Ford avoiding responsibility, they are allowing trucks to operate daily on our highway system, which becomes a safety concern for not only the driver but for many other motorists. The problem existed, but the issue was not resolved, all we are asking is that they take responsibility for making the repairs and permanently resolving the issue for the safety of all motorists.
NHTSA complaint #11587794 — an unverified report by a vehicle owner.
Bonfield, IL
STRUCTURE:FRAME AND MEMBERS
See attached document for complaint
NHTSA complaint #11583076 — an unverified report by a vehicle owner.
Bonfield, IL
STRUCTURE
See attached document for complaint
NHTSA complaint #11583076 — an unverified report by a vehicle owner.
at 15,000 milesCaldwell, ID
FUEL SYSTEM, DIESEL
The contact owns a 2020 Ford F-550. The contact stated while driving approximately 30 MPH, the vehicle emitted a strong odor of fuel into the cabin. The contact stated that other drivers were pointing at the underside of the vehicle. The contact pulled over and observed fuel leaking from a filter, the underside of the hood and engine compartment on the driver's side were covered in fuel. The contact stated no warning light was illuminated. The contact called a dealer and was advised to change the filter. The contact stated that the vehicle experienced a failure a second time and had the vehicle towed to the same dealer. The dealer diagnosed that there was rust in the fuel filter which had contaminated the fuel injection system. The vehicle had not been repaired. The contact had contacted a second dealer and was advised that the failure could be related to NHTSA Campaign Number: 22V013000 (Fuel System, Diesel). The manufacturer had been informed of the failure. The failure mileage was approximately 15,000.
NHTSA complaint #11478581 — an unverified report by a vehicle owner.
Pollock Pines, CA
VISIBILITY
The contact owns a 2020 Ford F-550. The contact received notification of NHTSA Campaign Number: 22V250000 (Visibility) 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 made aware of the issue. The contact had not experienced a failure. Parts distribution disconnect.
NHTSA complaint #11473867 — an unverified report by a vehicle owner.
at 2,200 milesShingle Springs, CA
SUSPENSION
The contact owns a 2021 Forest River Georgetown constructed on a 2020 Ford F53 chassis. The contact stated that the weight of the motorhome was falsely advertised and that the motorhome was over the weight limit for the chassis it was built. The contact stated that the motorhome OCCC (Occupant Carrying Capacity Certificate) advertised for the motorhome was 19,208; however, the contact weighed the motorhome with the motorhome completely empty and the certified weight was 21,080. The contact stated that while driving the motorhome, an abnormal clanking and popping noise was coming from the vehicle while driving. The contact stated that the vehicle would push its way through corners and turns due to the weight of the motorhome. The dealer was notified of the failure and stated that they were unable to perform the needed repair. Both the motorhome and chassis manufacturer were notified of the failure. The contact stated that the chassis manufacturer claimed that the motorhome was overweight and the cause of the failure. The motorhome manufacturer claimed that the weight was correct and that there was no failure with the vehicle. The vehicle had yet to be repaired. The failure mileage was approximately 2,200.
NHTSA complaint #11470720 — an unverified report by a vehicle owner.
at 80,000 milesRedmond, OR
POWER TRAIN
The contact owns a 2020 Ford F-550. The contact stated while driving 45 MPH, the transmission started slipping. The check engine warning light was illuminated. The contact pulled to the side of the roadway. The vehicle was towed to an independent mechanic. The vehicle was taken to an independent mechanic where it was diagnosed that the planetary ring gear needed to be replaced under NHTSA Campaign Number: 22V256000 (Power Train). The VIN was included in the recall. The vehicle was then towed to the local dealer who informed the contact that they could not accommodate the vehicle for the recall repair due to the size of the vehicle. The vehicle was towed to a second dealer, Northside Ford Truck Sales, Inc. (6221 NE Columbia Blvd, Portland, OR 97218) who informed the contact that the vehicle would be repaired at his own expense. The manufacturer was notified of the failure and advised the contact to follow up with the dealer. The vehicle was not repaired. The failure mileage was approximately 80,000.
NHTSA complaint #11469065 — an unverified report by a vehicle owner.
at 2,393 milesOjai, CA
SERVICE BRAKES
ELECTRONIC STABILITY CONTROL (ESC) LIGHT CAME ON AND STAYED ON DURING NORMAL, STRAIGHT AND LEVEL HIGHWAY DRIVING AT 60 MPH, INDICATING AN ESC SYSTEM MALFUNCTION. THE LIGHT CAME ON AFTER ABOUT 20 MILES OF HIGHWAY DRIVING AND REMAINED ON FOR THE REMAINING 12 MILES OF MY JOURNEY. AFTER BEING PARKED OVERNIGHT THE ESC LIGHT OPERATED NORMALLY WHEN THE ENGINE WAS RESTARTED WHILE PARKED.
NHTSA complaint #11413180 — an unverified report by a vehicle owner.