What 937 owners told NHTSA about the 2021 Ford F-150 Supercab Diesel

The contact owns a 2021 Ford F-150. The contact received notification of NHTSA Campaign Number: 23V896000 (Power Train); 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 dealer was made aware of the issue and confirmed that parts were on backorder. The manufacturer was not made aware of the issue. The contact had not experienced a failure.

NHTSA ODI 11733228

The 10r80 transmission is failing. I have safety concerns for myself and others due to loss of acceleration and violent down shifts. The issue has been reproduced by my mechanic shop. The dealership will not help me with the issue. There have been no dash lights until the failure occurred. The only indication was some occasional rough shifting leading up to the incidents.

NHTSA ODI 11732891

Hello, my 2021 Ford F150 with 10 Speed Automatic Transmission is believe 10R80 is the issue. I've experienced some delayed shifting, erratic shifting. Also, some when coming to a stop. I've had the transmission serviced with a fluid drain and new filter. Current mileage approximate 53K. I did research to find the 10 Speed. Transmission to having issues with a Class Action Lawsuit.

NHTSA ODI 11732380

Vehicle: 2021 Ford F-150 XLT Issue: Transmission Malfunction and Safety Concern I am submitting a formal complaint regarding a serious and ongoing transmission issue with my 2021 Ford F-150 XLT. The vehicle has exhibited multiple dangerous and unpredictable transmission behaviors that raise significant safety concerns. First, the truck experiences a pronounced 3–4 shift flare. During this shift, the engine RPM rises abnormally high before the transmission engages the next gear. This creates a noticeable delay in acceleration and reduces driver control, particularly when merging into traffic or accelerating from lower speeds. Second, there is a severe hard engagement when shifting from Park into Drive or Reverse. The vehicle produces a loud and forceful clunk, accompanied by a jarring motion. This issue occurs consistently and gives the impression of excessive internal wear or mechanical failure within the transmission system. Third, the transmission intermittently becomes stuck in gear or behaves erratically. This includes sudden, harsh downshifts without driver input, bringing the vehicle to a stop, and occasions where the vehicle resists changing gears altogether. These events are abrupt and can be dangerous, especially at highway speeds or in heavy traffic conditions. Additionally, there have been instances of delayed engagement and hesitation when selecting Drive or Reverse, further compounding concerns about reliability and safety. These transmission problems are not only disruptive but also pose a real risk of accident or injury due to loss of predictable vehicle operation. I am requesting that this issue be formally investigated, as it may indicate a broader defect affecting similar vehicles. Thank you for your immediate attention to this matter.

NHTSA ODI 11732271

The contact owns a 2021 Ford F-150. The contact received notification of NHTSA Campaign Number: 23V896000 (Power Train); however, the part to do the recall repair was not yet available. The local dealer was contacted, but the vehicle was not 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 issue. The contact stated that the hub bolt had fractured. The approximate failure mileage was 36,000.

NHTSA ODI 11731836

Trans is hanging shifting into 2nd gear, 4th gear, 7th gear, and 9th gear. Also has gotten stuck in 10th gear 3 times. Had to roll over to the side of the road turn the truck off and restart. Also have hard shifts from 1-3 and then have hard downshifts from 5-4-3.

NHTSA ODI 11730873

Unreasonable Delay in Remedy for Recall 23V896 / 23S65 I am filing this complaint to report an unacceptable delay in the remedy for NHTSA Recall 23V896 (Manufacturer 23S65). This recall was issued in December 2023, yet as of April 2026, the manufacturer continues to claim that parts are unavailable for repair. This delay has persisted for nearly three years, during which time the manufacturer has continued to produce and sell new vehicles while leaving existing owners at risk. 1. Component Failure & Inspection: The components involved are the rear axle bolts. The vehicle and the specific components are available for inspection upon request. 2. Safety Risk: The safety of myself, my passengers, and others on the road is at significant risk. A failure of the rear axle hub bolts can result in a total loss of motive power (the ability to move the vehicle) or cause the vehicle to roll away while in park. Both scenarios significantly increase the risk of a high-speed crash or injury to pedestrians. 3. Confirmation & History: The necessity for this repair has been confirmed by an authorized dealer service center. However, the vehicle has not yet been inspected by the manufacturer’s corporate representatives, police, or insurance. 4. Symptoms & Warnings: There were no warning lamps, messages, or physical symptoms of the problem prior to the failure. I only became aware of the defect through the official recall notification provided by the manufacturer and the NHTSA. Conclusion: It is unacceptable that a known safety defect remains unremedied for this duration. I am requesting that the NHTSA investigate the manufacturer's failure to provide a remedy within a reasonable timeframe as required by law, especially considering the continued production of new units using similar components.

NHTSA ODI 11729807

The contact owns a 2021 Ford F-150. The contact stated that while driving at 70 MPH, the contact noticed an unusual grinding sound. The vehicle was driven to the shoulder of the road. The contact noticed a lot of unusual clicking or rattling sounds. In addition, several unknown warning lights were illuminated. The contact stated that upon exiting the vehicle, the contact noticed a fire underneath the vehicle. In addition, the drive shaft was detached. The contact stated that the fire burned out independently. The vehicle was towed to the contact's residence. The contact stated that the drive shaft had scorching around it. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. In addition, the contact stated that the recall, NHTSA Campaign Number: 21V986000 (Power Train, Structure), was performed on the contact's VIN about six months ago. The dealer was not made aware of the failure. The manufacturer was not made aware of the failure. The failure mileage was approximately 111,000.

NHTSA ODI 11729380

Two of my catalytic converters have failed twice. The first time was at the end of January 2024, the second time was at the end of March 2026. All regular maintenance on the vehicle has been completed at a Ford dealership. The only explanation I have received for the failure of the catalytic converters was "the parts were defective." I have owned five Ford trucks in my lifetime and this is the first time the catalytic converters have failed, and they have failed twice on a five year old truck. This is, however, the first hybrid truck I have ever owned. Perhaps there is a defect in the design of the motor that the general public may not be aware of? Hopefully you can look into this situation to prevent someone else from going through the drama that I'm having to deal with. Lightening has already struck twice and I'm just praying that it will strike the third time for me before the two year warranty runs out on these catalytic converters that were just installed in my truck.

NHTSA ODI 11729276

Transmission is shuddering at speeds up to 60mph. Can cause the vehicle to jump repeatedly.I am worried at such a high speed the vehicle could lose control and put my life and others at risk. Also can shift very hard when coming to a stop so much so that it feels like I’ve been hit from behind by another vehicle. I’ve never had any type of messages or warning lights prior or post. After searching up issue I have found hundreds and hundreds of other vehicle owners with the 10r80 transmission to be experiencing similar problems. Ford has acknowledged the problem and have a fix but at a high cost. Some people are not able to repair vehicles at that moment could be putting themselves and other at risk of death or injury.

NHTSA ODI 11729134

My truck started shifting gears hard while driving and wouldn’t go into reverse when parking. Performance transmission shop is telling me I need a new transmission. Getting multiple error codes.

NHTSA ODI 11729128

The contact owns a 2021 Ford F-150. The contact stated that while her husband was driving 20 MPH, there was an abnormal ticking sound coming from the vehicle. No warning lights were illuminated. The contact received notification of NHTSA Campaign Number: 23V896000 (Power Train). The vehicle was taken to the local dealer, where it was diagnosed and it was determined that the rear axle was fractured. The vehicle was not repaired due to the part being on back order. The dealer informed the contact that additional driving might cause additional stress on the rear axle. The manufacturer was contacted, and a case was opened. The approximate failure mileage was 25,000.

NHTSA ODI 11728016

The contact owns a 2021 Ford F-150. The contact received notification of NHTSA Campaign Number: 23V896000 (POWER TRAIN); however, the part to do the recall repair was unavailable. The local dealer was contacted and confirmed that the part was not yet 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 received a letter indicating that parts for the recall repair were available. The vehicle was taken to the local dealer, and the contact was informed that parts were on back order. The contact had not experienced a failure.

NHTSA ODI 11727560

I’ve had the transmission replaced along with the torque converter when both failed less than a year ago. The transmission AND the torque converter are now doing the same thing it was doing prior to the replacement. The transmission slips in 4th, 7th and 8th gears. The torque converter whines loudly. Ford will not fix the issues with these transmissions without a hefty out of pocket fee. It’s become very well known that all of these 10R80 engines/transmissions are a major problem that ford is not remedying. If this transmission gives out when I’m on the interstate it’s going to cause a major wreck. I live in the mountains, so a bad transmission can quickly turn into a deadly accident. These transmissions need a permanent fix, not for us owners to continue paying thousands of dollars for replacements or rebuilds. This is fords problem.

NHTSA ODI 11725769

Have been trying to get recall for rear axle (NHTSA Recall Number23V896) taken care of since June 2025. Dealer (Corwin Ford, Reno NV) ordered parts on or around August 4. 2025. As of March 19, 2026, dealer has not received parts and made recall repair. Recall notice from Ford says parts are available. If nut comes loose, additional damage can occur and vehicle will not be drivable since Ford has failed to deliver parts in a timely manner.

NHTSA ODI 11725610

The contact owns a 2021 Ford F150. The contact stated that while driving at an undisclosed speed, the vehicle jerked and stalled. In addition, the transmission was slipping, and the vehicle briefly lost automotive power before slamming into gear. The vehicle was taken to the dealer; however, the contact was informed that technicians were not available. The vehicle was not repaired, and the failure persisted. The vehicle was taken to another dealer; however, no cause for the failure was found. The contact stated that the failure persisted. The vehicle was taken back to the dealer, where it was diagnosed that the transmission had failed and needed to be replaced. The vehicle was repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 60,000.

NHTSA ODI 11725666

I put the truck into reverse and tried to back out of my driveway. The truck didn't move for several seconds, then started to move. I brakes, shifted into drive and the truck continued to move backwards. I applied the brakes and the transmission seemed to spin before it moved forward. I drove down the street to the corner. I applied the brakes and the was a shudder and bang as the transmission downshifted from 4th to 3rd. This occurs intermittently over the last 3 months. When I searched online, I learned that these symptoms are consistent with those described in Ford TSB 23-2350. I had an independent mechanic confirm the problem and he noted the fluid was dark. Whrn I spoke to the dealership, they tried to explain the issue was due to the transmission being cold. I'm the original owner of the truck.

NHTSA ODI 11725708

Loss of power pulling onto a major highway -- luckily I was able to pull off onto a side street but had I not I could have been rear ended. Vehicle has been at Athens Ford since January 15th -- Ford states on their recall notification that parts are readily available -- they are not. I have been waiting for 2 months to get my vehicle back and have no resolution in sight. Dealer states they have no ETA on parts availability; Ford Customer Service also does not have an update.

NHTSA ODI 11724547

-The hub bolt in the rear axle broke. Truck had to be towed to dealership. Problem was confirmed by dealership. There was no warning lamp and only found out due to flat tire. -In 12/2022, power train failure left vehicle "dead" in the middle of the highway with family of four stranded 400 miles away from home.

NHTSA ODI 11724377

Giving an error of reverse assist and not available when starting truck and when placing truck in reverse. Have look up to seen if included in the recall that was issued 6 days ago. Have called dealership to confirm that not part of recall. The message just showed up last night. This truck should be included in the recall

NHTSA ODI 11722094

I had my 2021 F-150 into the local ford dealership not even a year ago due to a shifting issue. I was on the interstate and passing a car in the passing lane on the interstate and my truck shifted so hard I thought I lost something and then kinds lost power for a minute. The dealership ran a test on it, and it failed. It was some type of valve that was bad I guess ford and GM are having the issue. Now I am starting to have the same issue on now it is down around 4th to 3rd or 3rd to 2nd gear, but when it shifts once in a while it is a very hard shift and it scares the hell out of you. Now once in a while when I go to shift from drive to park or drive to reverse the shifter will not move. Like I said I am getting ready to get ahold of the dealership again and get it in to be looked at I am just waiting for winter to be over.

NHTSA ODI 11721348

The transmission shifts hard when downshifting from 10th gear on the highway. There is a loud audible clunk that you can also physically feel. Also when shifting around 3rd gear during city driving there is the same problem. Both of these could lead to loss of traction/vehicle control.

NHTSA ODI 11721102

My truck has harsh shifting when I accelerate and when I slow down. It skips out of gear into neutral and then goes back into gear. I believe the problem is that my system isn’t communicating with the transmission correctly.There weren’t any warning messages before or after this problem started. I did some research, and my model and year of my truck do have a problem like this no dealership or service center has not inspected this problem

NHTSA ODI 11720844

10 Speed transmission jumps at highway speeds, clunks when stopping, and slips when cold. I've had it to the dealer and they replaced the torque converter, and I've had it back several more times. The garage refuses to allow another appointment since Ford engineers say the slipping and jumping is within specs and since no lights or warnings are noted I just have to live with it. The mechanics can feel it but are helpless to do anything about it. Ford refuses to fix it and it is a well-known problem.

NHTSA ODI 11720967

The contact owns a 2021 Ford F-150. The contact received notification of NHTSA Campaign Number: 23V896000 (Power Train); 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 not experienced a failure.

NHTSA ODI 11720672