Which parts fail
Components named in complaints (automatic and manual transmissions, CVT, axles, driveshaft, 4WD/AWD).
Mileage when the problem started
Owner reports
Selected complaints filed with NHTSA by 2020 Subaru Outback owners, lightly cleaned up (personal details are redacted by NHTSA).
The contact owns a 2020 Subaru Outback. The contact stated that while the driver was driving at approximately 35 mph, the vehicle was maneuvering to the right lane however, the vehicle flipped over landing on the roof. The air bags did deploy. The contact mentioned that the wheel mechanism and driveshaft fell out onto the right side of the vehicle. A police report was not filed. The contact stated that the driver did not sustain any injuries that needed medical attention. The vehicle was towed to a tow lot. The vehicle was damaged. The dealer was notified of the failure. The manufacturer was not notified of the failure. The approximate failure mileage was 31,000.
The contact owns a 2020 Subaru Outback. The contact stated that after parked in the driveway, the vehicle suddenly accelerated into their home. No air bags had deployed. A police report was not filed. There were no injuries and no medical attention was needed. The home had been damaged. The vehicle was towed to the dealer who was not able to identify the cause of the failure at that time, however, they were going to run more diagnostic tests and inspections. The vehicle had not been repaired as of yet. The manufacturer was not made aware of the failure. The approximate failure mileage was 54,400.
The contact owns a 2020 Subaru Outback. The contact stated that upon taking the vehicle to the dealer to be serviced, the dealer informed the contact that the transmission was binding and making an abnormal grinding sound while driving at slow speeds and making turns. The dealer performed the TCM software update and replaced the transmission clutch kit under NHTSA Campaign Number: 21V955000 (Power Train); however, the failure recurred. The contact stated that the recall repair had failed to correct the failure. The vehicle was taken back to the dealer, where the transmission clutch pack was replaced twice; however, the failure recurred. The vehicle was taken to a second dealer, Schumacher Subaru (3021 Okeechobee Blvd, West Palm Beach, FL 33409), where the transmission clutch pack was replaced; however, the failure persisted. …
The contact owns a 2020 Subaru Outback. The contact stated that while his wife was accelerating from a stop at approximately 10 MPH, the vehicle stalled. The vehicle failed to move. There were unknown warning lights illuminated after the failure. The vehicle was towed to the local dealer, where it was diagnosed and determined that the transmission needed to be replaced. The dealer informed the contact that there was no warranty coverage on the vehicle. The dealer confirmed the vehicle was not covered under NHTSA Campaign Number: 21V955000 (Power Train). The vehicle was not repaired. The manufacturer was contacted and opened a case. The failure mileage was approximately 70,158.
The contact owns a 2020 Subaru Outback. The contact stated that he received a recall letter from the manufacturer. The contact stated no warning light was illuminated. The contact took the vehicle to a local dealer, where it was diagnosed with needing a software update. The contact reported that the recall letter advised that the vehicle has no remedy for it yet for the CVT chain. The contact said that the vehicle will be unsafe to operate and the dealer nor the manufacturer have offered any remedy. The vehicle was not repaired but was pending repairs. The manufacturer had been informed of the failure. The failure mileage was approximately 23,000.
The contact owns a 2020 Subaru Outback. The contact stated while depressing the accelerator pedal, the Brake Hold feature failed to automatically disengage and the vehicle was driven and a clunking noise coming from the rear of the vehicle. The vehicle was taken to the local dealer who indicated that the noise was due to a faulty transmission and that the transmission needed to be replaced. The vehicle was not yet repaired. The manufacturer was notified of the failure but no assistance was offered. The failure mileage was 21,207.
The contact owns a 2020 Subaru Outback. The contact stated that while attempting to make a turn, the transmission was slipping while attempting to shift gears. There was no warning light illuminated. The vehicle was taken to the dealer, but was not diagnosed or repaired. The manufacturer was not made aware of the failure. The approximate failure mileage was 56,700. The VIN was not available.
While driving on the NYS Thruway (I90), I started to pass a Tractor Trailer, I put my blinker on and began moving to the right to pass. There were 2/3 cars in back of me also passing. I was using cruise control and I began to put my foot on the accelerator to finish my passing and move over to the right hand lane to let the other vehicles pass me. However, upon accelerating, my car started to drop power, multiple lights displaying simultaneously indicating a potential problem. (Eyesight Assist, Vehicle Dynamic Control, Brake & Engine Lights), the vehicle started jerking back and forth and I lost all but maybe 5 miles of power. My choice at that time was put my blinker on and try and move to the right - letting the Tractor Trailer pass me on the right and HOPE there was not another vehicle behind so I could move over safely at that crawling speed or go to the left into the gully. …
I have a 2020 Subaru Outback with just over 70,000 miles on it. Well before hitting 70,000 miles, there were two occasions where a loud, unusual noise occurred while reversing out of my garage. Additionally, I occasionally hear a strange noise when shifting into Reverse from Park. I also sometimes notice a whining or humming sound when accelerating from a complete stop, such as at a traffic light. Regarding the two loud noises I experienced, I have saved an audio file recorded by another consumer who posted it online describing the exact same issue - the sound is identical to what my car produced on those two occasions. The audio file is available upon request and may assist in diagnosing the issue. Please note that the date I provided for when the noise first occurred is approximate, as I cannot recall the exact date. …
I'm writing to request assistance with my recall. This recall was first reported to the local dealership over one year ago. They have had me take the car back 4 times for inspection. Since that time as the problem has proceeded to get worse, which will now cost even more to repair, and increase the likelihood of the transmission damaging other parts of the drivetrain. Now I just received notification that they will not perform the recall as my vehicle doesn't qualify. It has the problem of transmission slipping which is what the recall is for. I saw the pictures they took that looked exactly like the problem specified. I do not have $7000 dollars plus to fix the transmission. I can't sell the car because the VIN will show the recall (which I'm sure they will try to just remove). All they have done is waste my time for the last year to do what? …
Related recalls
Power train › Driveline › Chain/belt
Subaru of America, Inc. (Subaru) is recalling certain 2020-2021 Outback and Legacy vehicles. A programming error in the Transmission Control Unit (TCU) may allow the clutch to engage before the drive chain is completely clamped.
Remedy: Dealers will reprogram the TCU, inspect TCU data for chain slip, and visually inspect the chain guide. If evidence of chain slippage or damage is found, the transmission will be replaced.
Power train › Driveline › Chain/belt
Subaru of America, Inc. (Subaru) is recalling certain 2019-2020 Ascent, 2020 Legacy and Outback vehicles. A programming error in the Transmission Control Unit (TCU) may allow the clutch to engage before the drive chain is completely clamped.
Remedy: Dealers will reprogram the TCU, inspect TCU data for chain slip, and visually inspect the chain guide. If evidence of chain slippage or damage is found, the transmission will be replaced.
Transmission complaints in other Outback years
Frequently asked questions
How common are transmission problems on the 2020 Subaru Outback?
NHTSA has 48 complaints about the transmission & drivetrain of the 2020 Subaru Outback, 5% of the model year's 901 complaints. The component named most often is automatic transmission › control module (tcm/pcm/tecm) (1 mentions).
Is there a recall for 2020 Subaru Outback transmission problems?
Yes — NHTSA recall 22V-485 (chain/belt, Jul 8, 2022); NHTSA recall 21V-955 (chain/belt, Dec 9, 2021). Recall repairs are free at authorized dealers.
At what mileage do 2020 Subaru Outback transmission problems start?
Half of the complaints with a recorded mileage happened before about 23,000 miles, and 56% before 25,000 miles.
Is it dangerous?
Owners linked 2 crashes, 0 fires and 0 injuries to transmission & drivetrain problems on this model year. If you notice symptoms, have the car checked before driving further.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.