2020 Subaru Legacy Problems
Owner-reported complaints filed with NHTSA, grouped by component
Data refreshed
What this page shows
Everything below is an owner-reported complaint submitted to NHTSA about the 2020 Subaru Legacy, grouped by the component NHTSA recorded on the report. These are not confirmed defects, and they are not recalls. NHTSA does not verify most reports before publishing them, and a category with more reports in it is not evidence that a part is defective.
Complaints are reports submitted by owners and drivers to NHTSA. They are not verified and do not establish that a defect exists.
Reports by component
Ranked by how many owner reports name each component category
- Visibility6659.5%
- Electrical1513.5%
- Driver assistance109.0%
- Powertrain (other)76.3%
- Engine43.6%
- Brakes21.8%
- Tires & wheels10.9%
- Fuel system10.9%
- Body & structure10.9%
- Airbags10.9%
- Interior & seats10.9%
- Exterior lighting10.9%
- Steering10.9%
Percentages are of component mentions. A single complaint can name more than one component, so these do not sum to the total complaint count.
Each component in detail
What the reports in each category say, in the owners' own words
Visibility
Reports naming windshields, glass, wipers, defrosters and mirrors.
From owner reports, verbatim
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.
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.
Electrical
Reports naming the electrical system — wiring, battery, charging, control modules, infotainment and electrical accessories.
From owner reports, verbatim
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.
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.
Driver assistance
Reports naming forward-collision avoidance, lane keeping, back-over prevention, cruise control and related electronic driver-assistance systems.
From owner reports, verbatim
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.
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
Powertrain (other)
Powertrain reports that are not specifically the engine or transmission — driveshafts, axles, transfer cases and differentials.
From owner reports, verbatim
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.
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
Too few reports in this category for a page of its own — they appear in the full complaint list.
Engine
Reports naming the engine itself — including stalling, misfires, oil consumption, cooling and internal engine components.
From owner reports, verbatim
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.
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)
Too few reports in this category for a page of its own — they appear in the full complaint list.
Brakes
Reports naming service brakes, the antilock braking system, brake hoses, master cylinders or the parking brake.
From owner reports, verbatim
Brake pedal of my Subaru Legacy 2020 stopped working suddenly. It kind of gets stuck. It happened to me twice and that is why I am reporting it now. Luckily it happened when I was starting the car not while driving on the road. But I am a little afraid to drive the car on roads now thinking that brake may get stuck again.
I WAS DRIVING ON THE CAPITAL BELTWAY IN SILVER SPRING DURING EVENING RUSH HOUR GOING APPROXIMATELY 60 MPH WHEN THE VEHICLE STARTED TO SLOW DOWN ON ITS OWN AND THE WARNING LIGHTS ON THE DASH ASSOCIATED WITH THE EMERGENCY BRAKING SYSTEM ( WHICH CAUSES THE CAR TO ABRUPTLY STOP IF YOU ARE GOING TO CRASH) STARTED TO FLASH. IT LASTED ABOUT 5-10 SECONDS . I DID NOT TAKE MY FOOT OFF THE GAS OR BRAKE THE CAR. THEN IT ACCELERATED ON ITS OWN TO 60 MPH.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Tires & wheels
Reports naming tires, wheels, hubs, or the tire-pressure monitoring system.
From owner reports, verbatim
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.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Fuel system
Reports naming fuel storage or delivery — tanks, pumps, lines, injectors and fuel leaks.
From owner reports, verbatim
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.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Body & structure
Reports naming the vehicle structure, frame, body panels, doors, hood and trim.
From owner reports, verbatim
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.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Airbags
Reports naming the air-bag system — deployment behaviour, inflators, sensors and warning lights.
From owner reports, verbatim
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.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Interior & seats
Reports naming seats, latches, locks, linkages and interior fittings.
From owner reports, verbatim
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.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Exterior lighting
Reports naming headlights, tail lights, turn signals and other exterior lighting.
From owner reports, verbatim
TL* THE CONTACT OWNS A 2020 SUBARU LEGACY. THE CONTACT STATED THAT WHILE DRIVING AT NIGHT, SHE HAD BEEN NOTIFIED BY OTHER DRIVERS THAT HER HEADLIGHTS WERE TOO BRIGHT AND DISTRACTING. THE CONTACT STATED THAT ONE DAY WHILE HER HUSBAND WAS DRIVING AT APPROXIMATELY 65 MPH, ANOTHER VEHICLE HAD ATTEMPTED TO PASS THE VEHICLE. UPON PASSING THEIR VEHICLE, THE OTHER DRIVER ASSUMED THAT HER HUSBAND WAS TRYING TO ANTAGONIZE HIM BY FLASHING HIS HIGH BEAMS; HOWEVER, THE CONTACT HAD THE HEADLIGHTS SET AT THE NORMAL LEVEL. THE OTHER DRIVER BECAME ENRAGED AND ATTEMPTED ON NUMEROUS OCCASIONS TO RUN THEIR VEHICLE OFF OF THE ROAD. THE CONTACT WAS UNABLE TO GET THE CONTACT'S LICENSE PLATE AND THE POLICE WERE CALLED FOR ASSISTANCE. A POLICE REPORT WAS NOT FILED. THE CONTACT HAD SPOKEN TO SUBARU PACIFIC(14700 HINDRY AVE, HAWTHORNE, CA 90250) AND INFORMED THAT THEY WERE UNABLE TO SWITCH OUT THE ORIGINAL HEADLIGHTS; THEY OFFERED NO FURTHER ASSISTANCE. A MILEAGE WAS NOT AVAILABLE.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Steering
Reports naming the steering system — racks, columns, power-steering assist and steering linkage.
From owner reports, verbatim
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.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Higher-selling and older vehicles accumulate more reports. Counts are not failure rates and are not directly comparable between vehicles that sold in very different numbers.
Elsewhere on this vehicle
Data sources
- NHTSA Office of Defects Investigation — owner-reported complaints and the components recorded on them
Data on this page last refreshed .