2020 Subaru Legacy Problems & Owner Complaints

Visibility/Wiper 57

“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 complaint #11588664, 2024

“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 complaint #11548905, 2023

“2020 Subaru Legacy Touring XT - Windshield cracked for no apparent reason. No stone or rock chips visible. Had same issue on previously owned 2015 Subaru Legacy. The crack starts at the base of the passenger side where heat strips are located to keep the wiper blades from freezing. The cracked windshield may cause the Subaru EyeSight safety system to malfunction, putting all passengers at risk for a potential accident. I had it inspected at a Subaru dealership. The service technician confirmed that this was a know problem. He suggested I call Subaru of America for assistance. I'm sti…”
NHTSA complaint #11510789, 2023

Unknown Or Other 26

“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 complaint #11745403, 2026

“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 complaint #11647859, 2025

“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 complaint #11576744, 2024

Electrical System 15 1 fire

“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 complaint #11674078, 2025 · fire

“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 complaint #11745403, 2026

“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 complaint #11642640, 2025

Visibility 9

“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 t…”
NHTSA complaint #11697739, 2024

“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 complaint #11540581, 2022

“The contact owns a 2020 Subaru Legacy. The contact stated while driving approximately 25-30 MPH on a smooth residential road, the windshield started cracking. The contact stated that there was no external cause for the failure. The contact stated that the horizontal crack was located at the base of the windshield and was 7-inches long starting on the driver’s side. The contact stated that the crack was extending. The dealer was notified of the failure and informed the contact that he would be responsible for the cost of the repair. The vehicle was not repaired. The manufacturer was not notifie…”
NHTSA complaint #11457329, 2022

Forward Collision Avoidance 7

“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 complaint #11520756, 2023

“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…”
NHTSA complaint #11535129, 2022

“Since last October when a software update was performed on the vehicle I have had multiple(8-10) instances where the EyeSight system caused the emergency braking to activate when no other vehicles were nearby and a crash was not imminent. Usually it has been when entering a left hand gentle curve with a guardrail nearby, but it has also happened going straight ahead. The audible and visual alerts appear and hard braking occurs. The braking is severe enough that on rain or snow covered roads a crash might occur. The dealer inspected the vehicle and claims they found the calibration was off bu…”
NHTSA complaint #11461729, 2022

Power Train 7

“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 uploa…”
NHTSA complaint #11564299, 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 complaint #11558437, 2023

“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 complaint #11539913, 2023

Engine 4 1 fire

“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 complaint #11674078, 2025 · fire

“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…”
NHTSA complaint #11565945, 2024

“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 complaint #11544993, 2023

Vehicle Speed Control 4 1 crash 1 injury

“The contact's wife owned a 2020 Subaru Legacy. The contact stated while his wife was driving approximately 3 MPH in a parking lot the vehicle suddenly accelerated and jumped the curb into woods and collided with a tree. The contact said his wife was not aware of any warning lights being illuminated. The vehicle front bumper and hood hit in the center and were both crumpled back about six inches. The contact hit the top of his head severely damaging the windshield on the passenger side and sustained minor cuts. Due to the sudden acceleration he had not been able to buckle his seat belt, additio…”
NHTSA complaint #11460011, 2021 · crash · 1 injury(ies)

“This vehicle is equipped with the Subaru "Eyesight" system which is a number of safety features like automatic cruise control, lane keep assist, and others. About once a week on average while driving the entire system will shut down and the screen will go dark. You lose the radio, bluetooth, navigation, and all the Eyesight systems. After about 30 seconds it will reboot and things will come back online but this is a major safety issue because you loose systems that help with safety. The dealership said it's a known software issue and there's nothing they can do until an update is available. I…”
NHTSA complaint #11442179, 2021

“I WAS DRIVING ON A FOUR LANE SECTION GOING UPHILL ON US50 IN CALIFORNIA WHERE THE SPEED LIMIT IS APPROXIMATELY 60 MILES PER HOUR. THE CAR SUDDENLY SLOWED DOWN TO APPROXIMATELY 25 TO 30 MPH. ALL ATTEMPTS TO INCREASE THE SPEED TO 55 TO 60 MPH FAILED. I SAFELY PULL OVER AND STOPPED THE CAR AND TURNED IT OFF. IT WAS RESTARTED, AND THE PROBLEM DID NOT OCCUR AGAIN.”
NHTSA complaint #11413828, 2021

Lane Departure 2

“1. The infotainment system crashed (happens often), which caused the touchscreen in the center control stack to turn black and become unresponsive. This also caused the EyeSight safety system, adaptive cruise control (with lane keep assist), and reverse auto braking to all shut down (my dashboard lit up with warning lights and errors). 2. Not only is this an annoyance, but having all of the safety systems in my car unexpectedly shut down is extremely unsafe, especially adaptive cruise control. Other functions of my car, such as the radio and climate controls are also inaccessible when this ha…”
NHTSA complaint #11420703, 2021

“DRIVING HOME WHEN I NOTICE WHAT I THOUGHT WAS A BIG HIT THE WINDOW. SLOWED TO THE LIGHT AND I NOTICE IT WAS ACTUALLY A SMALL ROUND CRACK IN MY GLASS SO I PULL IN THE WALGREENS LOT TO SEE WHAT COULD OF HAPPEN. BY THE TIME I PARKED AND OPENED MY DOOR I SAW THE CRACK HAD MADE ITS WAY ALL THE WAY DOWN MY WINDOW, SO I LEFT THE DOOR OPEN TO SEE IF I COULD FEEL THE CRACK BUT NOTHING. I GET BACK IN LIGHTLY CLOSING MY DOOR TO HEAD 2MORE MILES TO MY HOME AND THE CRACK MADE IT'S WAY UP HALF WAY THEN ACROSS HALF WAY. MY HEART LITERALLY MELTED. WHY IS THIS HAPPENING. THE WEATHER WAS 70 AND THERE WAS NO IMP…”
NHTSA complaint #11414047, 2021

Service Brakes 2

“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.”
NHTSA complaint #11446728, 2022

“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.”
NHTSA complaint #11352881, 2020

Air Bags 1

“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 complaint #11616662, 2024

Back Over Prevention 1

“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 complaint #11520756, 2023

Exterior Lighting 1

“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 VEHICL…”
NHTSA complaint #11343539, 2020

Fuel/Propulsion System 1

“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 complaint #11578035, 2024

Seats 1

“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 complaint #11728577, 2026

Steering 1

“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 complaint #11745403, 2026

Structure 1

“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…”
NHTSA complaint #11535129, 2022

Tires 1

“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 complaint #11557557, 2023