Problems · by component

2020 Subaru Outback power train problems

50 owner complaints to NHTSA about the 2020 Subaru Outback cite power train, 6% of all 905 complaints for this model year. NHTSA also lists 2 recalls on this component.

Complaints
50
6% of all complaints
Crashes
2
Reported by owners
Fires
0
Reported by owners
Injuries
0
Reported by owners
01 —Owner reports

What owners say about the power train

Verbatim from NHTSA complaints, newest first
“1. What component or system failed or malfunctioned, and is it available for inspection upon request? The rear differential assembly completely failed, disabling the vehicle's all-wheel-drive capability. The component was replaced by Shingle Springs Subaru, so the original failed part is no longer available for physical inspection, but all diagnostic and repair receipts are available upon request. 2. How was your safety or the safety of others put at risk? Around 73,000 miles, during a major winter snowstorm, I was starting to drive up a hill when the vehicle lost traction and the car would not move forward and began sliding. This sudden loss of control in severe weather put me, my [XXX] child, and all surrounding drivers at immediate risk of a catastrophic crash on a hazardous road with no warnings. 3. Has the problem been reproduced or confirmed by a dealer or independent service center? Yes. The complete failure of the rear differential was officially diagnosed, confirmed, and replaced by the service department at Shingle Springs Subaru. 4. Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? The…”
Owner complaint to NHTSAFiled Oct 29, 2026Power trainODI 11774347
“I was driving my 2020 Outback and all of a sudden, I heard a thump, like something dropped and it shut down. I was on a major highway and it totally scared me. Thankfully, the car right behind me swerved, preventing a collision. I have around 160,000 miles on it. It was then towed. Adventure Subaru in Fayetteville, AR looked it over. The transmission is bad, and it needs to be replaced. I am not sure if there have been any recalls on my vehicle that pertain to the Transmission. I have also contacted Subaru of America and waiting to hear back. No, there were no warning signs.”
Owner complaint to NHTSAFiled Oct 29, 2026Power trainODI 11774384
“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. Since the noise occurs most frequently during reverse, I am concerned there may be an issue with the CVT transmission.”
Owner complaint to NHTSAFiled Oct 14, 2026Power train, EngineODI 11771215
“Noticed minor hesitation in the reverse down our driveway Aug 2024. By Aug 2026, the transmission hesitation has turned into very noticeable shudder and slip. In reverse down the driveway, the TR580 CVT was showing premature initial failure resulting in unexpected loss of motive power control as well as acceleration hesitation in forward. This transmission defect compromised the ability to safely navigate down the driveway and through traffic, creating an risk of a rear end collision and stranding the vehicle in a hazardous roadway position. The vehicle was driven to Austin Subaru dealer early September 2026 where certified technicians inspected it. They diagnosed a catastrophic internal failure that is pending and stated the entire transmission assembly requires complete replacement. We were quoted an out of pocket retail repair cost of $9,774. Additional consideration: This defect occurred at exceptionally low mileage (<37,000) on a well maintained vehicle as it included Subaru provided services through April 2025. Only had a single oil change at a third party. Furthermore, Subaru of America Corporate Customer Advocacy was contacted regarding this exact VIN.…”
Owner complaint to NHTSAFiled Sep 28, 2026Power trainODI 11767432
“From when we purchased this car new until the day we traded it. There were many times on the freeway at 60-65 MPH that you would need to move over a couple of lanes and went to wide open throttle and the car would simply do nothing for 1 to 2 seconds. I recently learned that in 22' Subaru had a software update to rectify this issue. Meaning there are plenty of Subaru owners who are driving around in cars that put their safety at risk. When you step on the gas you need and expect the car to accelerate .”
Owner complaint to NHTSAFiled Aug 5, 2026Power trainODI 11754978
“My transmission has started to fail. The check engine light came on the error code read p0867, transmission fluid pressure. Other lights came on as well because it tripped the rest of the sensors because of the CVT failure. This seems to be a common problem in Subarus”
Owner complaint to NHTSAFiled May 9, 2026Power trainODI 11736752

Showing 6 of 50 reports. Read every report on NHTSA.gov.

Data from NHTSA Complaints API (owner reports, unverified) · synced Nov 3, 2026NHTSA vehicle page
02 —Related recalls

2 recalls on this component

Power train: control module (tcm

Free remedy

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.

Power trainReported Jul 8, 2022NHTSA 22V485000

Power train: control module (tcm

Free remedy

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.

Power trainReported Dec 9, 2021NHTSA 21V955000
Data from NHTSA Recalls API · synced Nov 3, 2026

Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.