2020 Ford F-150: transmission slipping

Filed Nov 2, 2026 · Transmission · OR

I am reporting a safety-related transmission problem I experienced with my 2020 Ford F-150 equipped with the 10R80 automatic transmission. While driving normally, the transmission suddenly lost power engine revved up and started to buck . This occurred while I was going down the coastal range pass while towing my boat, creating a potentially dangerous situation because the truck did not respond as expected when I needed predictable acceleration or propulsion. I believe this incident may be related to the known 10R80 CDF clutch-cylinder/sleeve problem. Ford technical information identifies axial movement of the CDF sleeve that can cause hydraulic-circuit leaks and harsh or delayed engagement and shifting. This condition can result in slipping, RPM flares, delayed engagement, unexpected gear changes, harsh downshifts, lurching, or loss of propulsion. This is a safety concern, not merely a transmission quality or reliability issue. Unexpected loss of propulsion or unpredictable shifting while merging, accelerating into traffic, crossing an intersection, turning, or traveling at highway speed can create a collision hazard. Because I personally experienced this unexpected transmission event, I request that the federal safety agency investigate the 10R80 CDF clutch-cylinder/sleeve condition in Ford F-150s. Please review Ford warranty claims, dealer repair records, transmission replacements, consumer complaints, and field-failure data to determine whether this is a safety defect requiring a recall. I believe owners should not have to wait for a potentially dangerous transmission failure before this known condition is addressed. Thank you for your consideration.

Filed Oct 30, 2026 · Transmission · TX

A sudden transmission slip or hard shift into 8th gear every time. feels like someone is hitting the brakes just slightly when driving 40-50mph transitioning from 7th to 8th. sudden jerk when shifting into 4th more irregular but once a day at least.

Filed Oct 21, 2026 · Transmission · NJ

while driving on the highway, my 2020 Ford F-150 equipped with the 10R80 transmission experienced a sudden and catastrophic loss of power. The transmission failed to shift slipped gears, and left the vehicle completely neutralized in traffic. This sudden loss of propulsion created an extremely hazardous situation on the road, nearly causing a severe collision before I could safely pull over.

Filed Sep 15, 2026 · Transmission · CA

The contact owns a 2020 Ford F-150. The contact stated that while driving, the vehicle jerked abnormally, experienced a transmission shifting delay between gears, and occasionally slipped out of gear. The contact stated that after slipping out of gear, the transmission failed to re-engage gear and slipped continuously. The vehicle was inspected by a transmission specialist, who confirmed the failure and determined that the transmission needed to be replaced. The manufacturer was notified of the failure. The failure mileage was unknown.

Filed Sep 9, 2026 · Transmission · SC

The 10R80 transmission failed internally due to the defective CDF clutch drum assembly. Vehicle experienced dangerous gear dropping/slipping. Forced to pay out of pocket at an independent shop for a total rebuild. I have not seen anything from dealer. It was inspected by an independent shop. There was no warning prior to the failure. This happened right over 100,000 miles.

Filed Sep 9, 2026 · Transmission · AL

Transmission slips gears and sometimes shifts violently. I took the truck to a Ford dealership for an assessment and was told I need to replace the whole transmission. I also have a problem with oil consumption from the engine. I was told by the same dealership that this was a known problem with the 5.0 engines built from 2019 to, I believe 2023 and that it would require an engine replacement. I bought this truck from an individual and now I am stuck with it.

Filed Sep 2, 2026 · Transmission · SD

Transmission shifted from 4th to 1st while driving a steady 25 mph, then lost all forward drive, the transmission slips, then will slam into gear. I parked it for two weeks until I could get it to the shop. Driving it to the Ford dealer today (2 September 2026) I had to stop the vehicle twice because the transmission was doing the same thing. Currently have 70K miles on it.

Filed Aug 27, 2026 · Transmission · WI

I am reporting a safety-related transmission problem I experienced with my 2020 Ford F-150 equipped with the 10R80 automatic transmission. While driving normally, the transmission shifts hard (ie: jerks, clunks) between 4-5 and 5-6 gears, and has on occasion failed to grab 1st gear when starting from a stop (revs, doesn't go). This occurred while turning across traffic, creating a potentially dangerous situation because the truck did not respond as expected when I needed predictable acceleration or propulsion. I believe this incident may be related to the known 10R80 CDF clutch-cylinder/sleeve problem. Ford technical information identifies axial movement of the CDF sleeve that can cause hydraulic-circuit leaks and harsh or delayed engagement and shifting. This condition can result in slipping, RPM flares, delayed engagement, unexpected gear changes, harsh downshifts, lurching, or loss of propulsion. This is a safety concern, not merely a transmission quality or reliability issue. Unexpected loss of propulsion or unpredictable shifting while merging, accelerating into traffic, crossing an intersection, turning, or traveling at highway speed can create a collision hazard. Because I personally experienced this unexpected transmission event, I request that the federal safety agency investigate the 10R80 CDF clutch-cylinder/sleeve condition in Ford F-150s. Please review Ford warranty claims, dealer repair records, transmission replacements, consumer complaints, and field-failure data to determine whether this is a safety defect requiring a recall. I believe owners should not have to wait for a potentially dangerous transmission failure before this known condition is addressed. Furthermore, I have already had two transmission rebuilds under warranty, and it's going back to the shop for a third time with the same issues 9/8/26. THE SAME ISSUES. I bought this truck in 2024 at 70K miles and it has been nothing but problems.

Filed Aug 11, 2026 · Transmission · VA

My pickup has the 10r80 transmission. It currently slips in lower gears and sometimes no 10th gear

Filed Aug 11, 2026 · Transmission · MI

There has been harsh shifting observed, both cold and warm. Often when downshifting and slowing to a turn or stop, there is a violent slamming into gear. I have also observed slipping in 3rd gear and making harsh shifts that appear to skip gears by the indicator. This is not a constant but intermittent issue. I have not taken it to the dealership because they will likely not be able to duplicate it in a reasonable amount of time.

Filed Aug 10, 2026 · Transmission · PA

Transmission started "clunking" and shifting erratically over a two week period before warning light came on that said "powertrain needs attention...contact dealer" Took the car to Monticello Ford in Monticello NY and they tested it based on diagnostic code and replaced filter and fluid. They reset the computer and told me to drive it for a week so computer could "relearn" driving habits. Drove truck for 4 days and once again transmission started clunking and shifting hard with loud thunks when transmission gears engaged. Had my [XXX] grandaughter in the truck with me on the highway when the transmission started to slip and would not engage. Other vehicles had to brake suddenly to avoid hitting me. Had to pull over and restart truck to get the transmission to re engage. Transmission issues have been a known problem with the Ford F 150 trucks since 2017 and yet Ford has done nothing to correct the problems with their customers.....there are currently three outstanding class action lawsuits against them regarding the faulty transmissions.....this is a SAFETY issue that Ford must be held accountable for and fix these trucks at NO COST to the customers who own these trucks immediately!!! INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Aug 7, 2026 · Transmission · CA

Our 2020 Ford F150 transmission failed at 80k miles. Ford USA offered to pay half of the repair cost but is not willing to take full accountability on a transmission that was never was put under stress. Our truck never towed anything and was only use to drive from the shop to the job site and with only 1 up to 2 passenger only max. Per google research: The 2020 Ford F-150, equipped with the 10R80 10-speed automatic transmission, commonly experiences harsh, erratic, or delayed shifting, sudden jerking or lunging between gears, and gear slippage. These issues stem from software calibration flaws in the adaptive learning system or mechanical wear on internal components. Common Symptoms and Issues Rough Shifting: Hard, delayed, or clunking engagement when shifting between lower gears, especially on cold starts. Lunging or Hesitation: Sudden forward surges or hesitation when trying to accelerate from a rolling stop. Gear Slippage: Temporary loss of power delivery or failure to catch the next proper gear cleanly. Shift Cable Clip Recall: A limited recall addressed a faulty shift cable lock clip where the gear indicator might show a different gear than what was actually selected, increasing rollaway risks