2020 Ford F-150: harsh or hard shifting

Filed Nov 2, 2026 · Transmission · FL

It will lose all power sometimes during 1-2 or 1-3 shift and not complete the shift causing you to be powerless in front of oncoming traffic while turning left on green across traffic. Then eventually slams into gear violently. This last time was not the first but two of my kids were in the truck this time. I have not had it to the dealer yet but after much research online this is a known problem and I have a pretty good idea of what they’re going to tell me. No check engine light.

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 25, 2026 · Transmission · PA

Transmission has hard/harsh shifts and delayed gear engagement that began around 56,000 miles and have become much worse at 68,000 miles. The delay in engagement when accelerating from a stop, pulling into traffic or merging is a safety concern. A Ford dealer performed a transmission adaptive relearn and software update, but the symptoms continued. The dealer did not verify hydraulic leakage or perform the full diagnostic described in Ford TSB 25-2126 (MC-11016931-0001, harsh/delayed shifts on 2017-2020 F-150), and the only recommendation was to replace the entire transmission at roughly $5,000 after the powertrain warranty expired at 60,000 miles. The incident date entered is today because the symptoms are ongoing and progressive: they developed gradually since about 56,000 miles and are heading toward ultimate transmission failure. Safety concerns: hesitation and delayed engagement when pulling into or merging with traffic, the truck possibly rolling back when engaged on hills, and loss of reliable power on hills.

Filed Oct 19, 2026 · Acceleration, Engine · NC

The Transmission has failed. Hard shifting, random gear switching while driving at any speed. i put it in reverse and it went forward while in reverse. it slows itself down while on the highway. it acts like it wants to turn off while running, its a matter of time before I'm driving down the road and it decides to stop suddenly and cause an accident. I got it diagnosed by truck works garage and they confirmed that the shifting was all over the place with random high rpms. The dealership quoted me $2500 just to diagnose the problem so i had it diagnosed at truck works garage for $160 to confirm the issues matched the tsb's and recalls that they wont acknowledge my VIN for. The failure 1st appeared 5 years ago when i was under warranty, i took it in (and have the work order still dated 10/22/202) for hard shifting and they brushed me off and sent me away with false information about the cause. 5 years ago (25 days before i brought it in for the hard shifting) there was a tsb 21-2315 published for the exact issue on my truck, They ignored it and sent me away without fixing anything or addressing the issues.

Filed Sep 28, 2026 · Transmission · OH

Transmission shifting very harshly. Especially in gears 3-4-5. Transmission will stop with no control, then abruptly slam into gear. 80,000 miles. Issues since new. Dealership says vehicle needs new transmission. Will factory assist at $3,700, my share $5,600. Ford has history with this transmission. Why didn’t they replace when in warranty?

Filed Sep 22, 2026 · Transmission · 88,000 miles · CA

The contact owns a 2020 Ford F-150. The contact stated that while driving at various speeds, there was a delay in the transmission shifting, and the vehicle hesitated while accelerating with the accelerator pedal depressed, and the vehicle jolted. The engine revved to 7,000-8,000 RPM. The vehicle was taken to an independent mechanic, who determined that the transmission needed to be rebuilt or replaced. The contact associated the failure with Technical Service Bulletin: 25-2301 (Harsh/Delayed Engagement and/or Harsh/Delayed Shift) and Technical Service Bulletin 25-2475(Harsh/Delayed Engagement and/or Harsh/Delayed Shift). The failure mileage was approximately 88,000.

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 28, 2026 · Transmission · SC

Harsh shifting from 3rd to 4th and 7th to 8th

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 · MN

Harsh shifting in between gears. Jerky shifting and shudders while shifting as well

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)