2020 Subaru Legacy Owner Complaints

While driving there is a loss of power, the battery fails, electronic components shut down and car stops. Has happened intermittently. Replaced battery. This is a significant safety issue happened on freeway near exit ramp, in parking lot in driveway, everything cuts out. Opened hood and seems to be battery terminal connector. Recall was issued for certain Subaru models but not legacy. No warning, just cuts off. Is not a standard battery terminal connector. Had to secure battery down with cable ties.

NHTSA ID

11745403

Incident

Jun 20, 2026

Driver's seat structurally unstable due to factory-installed welded nut shearing off the seat rail anchor at approximately 32,000 miles. Confirmed by Napleton Subaru technician on video. Physical component in owner's possession. Failure is consistent with prior Subaru seat rail weld recalls. This affects seat stability, occupant restraint geometry, and crash protection.

NHTSA ID

11728577

Incident

Mar 15, 2026

The contact owns a 2020 Subaru Legacy. The contact stated that during inclement weather, the front driver and front passenger’s side power windows failed to automatically roll up as intended. The contact was forced to hold the power window button to slowly roll the windows up. The vehicle was taken to a dealer, where the contact was informed that there was debris in the slides inside the windows, causing the windows to fail to retract. The contact stated that the driver’s side window retractor was replaced; however, the failure returned soon after the repair. The manufacturer was notified of the failure but offered no assistance. The vehicle was not repaired. The failure mileage was 29,000.

NHTSA ID

11697739

Incident

Jul 1, 2024

Mileage

29,000 mi

One hour into traveling on the highway smoke began to come from under the hood so we pulled off to the side of the road. Upon opening the hood, after the smoke cleared, a fire was observed. At that point the passengers exited the vehicle and called 911. There was no warning lights or sounds indicating any problems prior to this. The car burned very quickly and the firefighters extinguished the fire but not before the entire car was burned to ashes. The car is wrapped and in the possession of the insurance company pending investigation.

NHTSA ID

11674078

Incident

Jul 6, 2025

Power window driver side intermittently fails to function, leaving window partly or completely open. This is an ongoing problem. Often I have to restart the car to get the window to operate properly. Difficult to drive when weather conditions change suddenly and window won’t close.

NHTSA ID

11647859

Incident

Jan 1, 2025

in inclement weather the windows will not roll up, especially heavy rain events. The window will attempt to go up and then go into the fully open position. You have to wait a minute before the window will allow you to attempt again of reset the windows. This happen to me on the highway in a heavy rain. It has happened several times. Subaru knows of this problem and has a technical bulletin about it to change the motor and window tracks. They all should be changed before a fatality occurs

NHTSA ID

11642640

Incident

Jan 22, 2025

Defective Cam Carrier Seal

NHTSA ID

11638833

Incident

Jan 27, 2025

The contact owns a 2020 Subaru Legacy. The contact received notification of NHTSA Campaign Number: 24V227000 (Air Bags); 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 not made aware of the issue. The contact had not experienced a failure. VIN tool confirms parts not available.

NHTSA ID

11616662

Incident

Sep 26, 2024

I have had two spontaneous window cracks within 6 to 9 months apart. I had a full windshield replacement and the windshield has just cracked again. The second incident, the vehicle was parked overnight so it wasn't caused by a rock or from following a car.

NHTSA ID

11588664

Incident

May 14, 2024

The Thermo control valve is faulty and my friends is too. There is a class action lawsuit concerning this part. I replacement part was designed in 2021 and Subaru is aware of this issue, but refuses to do a recall. So far 2019, 2020 and 2021 models are affected.

NHTSA ID

11578035

Incident

Feb 24, 2024

Windshield On 3/5/24 I drove to work,...the windshield was intacted as of 8AM.. after my shift at 4PM mysteriously there was a line (crack in the window on the drivers side) around 6 inches....haven't been to my car since Wednesday 3/6/24... today 3/11/24 that crack has expanded to 12-14 inches across the drivers side The car is parked in my driveway

NHTSA ID

11576744

Incident

Mar 5, 2024

Sunroof exploded spontaneously while traveling down freeway. No one was within 3/4 of a mile in all directions.

NHTSA ID

11568119

Incident

Jan 25, 2024

The engine thermo control valve has been defective and Subaru has known this issue since 2022 and has tried to do some software update but it is defective [XXX] ) despite multiple tries. This can overheat an engine, result in the front collision warning system (eyesight) and rear auto-braking not working. Specific to my case, the front and rear collision warning systems are off, auto lane departure avoidance system is off, the engine can overheat and has had reduced performance, and the check engine lights are also on. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ID

11565945

Incident

Jan 16, 2024

The coolant bypass valve was defective. You would have to ask the dealership to inspect it, they kept it when they changed it out. It is unsafe because the engine could have overheated and exploded. The problem has been confirmed Subaru of Little Rock. They replaced the valve and some other parts. The check engine light came on when I started the car the night of Dec 22, 2023. At this time, the heat was struggling, the vents were barely blowing, and the thermometer would only work sometimes. I want to upload the Subaru dealership paperwork I received when I picked up the car, but the upload function is not working. Please send me an email if you would like a copy.

NHTSA ID

11564299

Incident

Dec 22, 2023

We recently purchased a used 2020 Subaru Legacy sedan with ~33,000 miles on it. It has a salvage title due to previous owner hitting a deer, (no air bag deployed, just minor body work) and it was professionally repaired to "like-new" condition. Last weekend, when starting the car, the check engine light and a bunch of other warning lights came on. An OBDI scan showed a code of "P263A" indicating a problem with the Thermo Control Valve. As a result of the defective TCV, several major functions of the vehicle were automatically disabled: adaptive cruise control, eyesight system with lane keeping, automatic braking, as well as all cabin heating, windshield defrost function, and the engine temperature gauge. Without these systems properly working, the drivability of the vehicle is greatly impaired, especially in a Minnesota winter without a functional windshield defrost and engine temperature monitoring gauge. When taking the car into the local Subaru dealership for full diagnostics, they confirmed that indeed the TCV was bad, and quoted me a cost of $1135 to replace it. They claimed that since the car has a salvage title, Subaru's warranty will not cover any part of this repair. However, there is a known wide-spread failure of this Thermo Control Valve in the 2019-2021 cars as listed in Subaru Technical Bulletin [XXX] which clearly states that there is a redesigned TCV that replaces the defective earlier part and fixes the earlier design flaws of the one installed in 2019-2021 vehicles. I spoke with the Subaru of America Client Advocacy representative, and he was adamant that the salvage title negates any responsibility for Subaru to fix this know defectively designed Thermo Control Valve. My thinking is that the defective TCV is both a drivability and a safety issue, and due to the wide-spread early life failure of this part, Subaru should be compelled by a recall to replace the defective car in all customer cars. All ADAS is affected by a bad TCV. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORM

NHTSA ID

11561151

Incident

Dec 15, 2023

At approximately 30k miles we had noticed the vehicle sounded loud, like a Turbo. It got worse and after returning from our vacation trip to Maine, it was noticeable louder but couldn’t place a finger on the problem. We brought the vehicle in to Victory Subaru in Morristown and they diagnosed the two rear failed wheel bearings. My question is how can both wheel bearings fail at only 20k and is there a potential for a system wide recall? Thanks

NHTSA ID

11558437

Incident

Nov 4, 2023

While driving on freeway the tire pressure warning light came on. I started to slow down and pull over and I felt the car wobble. I pulled to the side of the road and the tire had completely failed. The sidewalls, inside and out, had square chunks completely gone along the complete sidewall.

NHTSA ID

11557557

Incident

Nov 27, 2023

The front door window regulator of our 2020 Subaru Legacy is not working properly. It fails to raise and lower correctly and reliably which can be a safety issue especially in an emergency. The problem occurred without any prior warnings or messages. I am told by the dealership (Bob Moore Subaru of Oklahoma City) that it is part #61041AN00A that requires replacement.

NHTSA ID

11555488

Incident

Nov 5, 2023

Thermo Control Valve failed. Caused a short which affected all electrical components on its circuit. The car became inoperable in traffic.

NHTSA ID

11549397

Incident

Oct 7, 2023

This past Sunday evening, I drove to the convenience store 4 blocks away. As I returned, I noticed a crack in the windshield starting in the middle from the left edge and was about 12 inches long. No gravel marks were found, it had cracked for no apparent reason. Sitting the next night in the garage, the crack increased about 6 more inches by the next morning. Filed claim with my insurance and was subsequently replaced by Safelite here in Knoxville Tn. This cost me $100 out of pocket and no telling how much my insurance had paid. I just found the class action today.

NHTSA ID

11548905

Incident

Oct 1, 2023

Thermo Control Valve has malfunctioned. It disables all driver assistance, like lane assist, blind spot, RAB, collision braking, etc. I have seen on many forums that this is a known issue, across multiple vehicles from Subaru from 2019 to about 2021. The was a TSB put out about a new and improved part to fix this known issue.

NHTSA ID

11544993

Incident

Sep 13, 2023

The contact owns a 2020 Subaru Legacy. The contact stated that there was a crack on the front windshield that was not caused by an impact. The vehicle was taken to a dealer and the front windshield was replaced; however, the failure reoccurred. The manufacturer was contacted and stated that the contact would receive a callback. The failure mileage was 8,000.

NHTSA ID

11540581

Incident

Nov 24, 2022

Mileage

8,000 mi

The contact owns a 2020 Subaru Legacy. The contact stated while driving at an undisclosed speed, the contact stated that several unknown warning lights illuminated, and the gear shifter was inoperable. The contact stated that the transmission failed to shift as needed. The vehicle was towed to the dealer but was not diagnosed or repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 69,738.

NHTSA ID

11539913

Incident

Aug 21, 2023

Mileage

69,738 mi

Windshield spontaneously cracked at top. I came outside in the morning after a temperature fluctuation and there was a crack at the top with one piece of the glass sitting lower… it has since grown. I have been forced to drive with the crack as Subaru will do anything to not honor a warranty, ever. The eyesight I am learning is necessary for the vehicle to avoid front end collisions and to properly deploy the airbag. The crack started in November, it’s almost August, and I cannot get it replaced under the warranty I paid. I see many people have the same problem. You can even see where the windshield cracked where an iPass was mounted from a temperature change. The wipers also cannot keep up with moderate rain, causing rain blindness in moderate precipitation and the lightest rain will turn off the eyesight causing a malfunction that will not assist in avoiding a collision. In addition, I will be complaining with the CFTC for the warranty issues. I cannot even get records of my warranty or service. Example: window regulator was a problem off the log, and salesman used it as an example, service won’t repair. I regret buying a Subaru, they claim to be safe and reliable with great service, I am only having problems that affect the safe operation of the vehicle and I paid all this extra for full bumper to bumper and they tell me that it doesn’t exist. In addition, that vehicle claims to get close to 30mpg, I am being completely honest when I say I had about the same mileage in a 1995 Cadillac Deville, and the mileage I got in a 2009 BMW twin-turbo far exceeded the mpg. I tried to get it repaired today under warranty. I was yelled at that it was an impact, and I wish I knew… would have said, “is it more likely that I’m lying or the company that’s been successfully sued 4 times for this exact problem is at fault?” Perhaps there was a light impact in the months AFTER it broke parked in a unheated garage.

NHTSA ID

11535129

Incident

Nov 1, 2022

Center console/head unit will regularly lock up and eventually reboot when Apple CarPlay is in use, cruise control, lane keep will turn off, and car will warn that ADAS is not available, backup camera does not work during this time. HVAC controls are not accessible during this time as well

NHTSA ID

11520756

Incident

Apr 22, 2023