2017 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 2017 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
- Visibility3530.7%
- Electrical2925.4%
- Steering97.9%
- Airbags76.1%
- Body & structure65.3%
- Brakes54.4%
- Engine54.4%
- Driver assistance43.5%
- Fuel system43.5%
- Powertrain (other)32.6%
- Other / unspecified21.8%
- Suspension21.8%
- Tires & wheels10.9%
- Transmission10.9%
- Exterior lighting10.9%
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
My 2017 Legacy is on it's 3rd windshield this year. I had impact damage on July 17th, had it replaced the first week of August, and it cracked without impact damage in October. Subaru refused to replace it under warranty and it was replaced through insurance in December. The genuine Subaru replacement windshields for 2015-2019 Legacy and Outback models appear to be defective and this should be investigated.
The contact owns a 2017 Subaru Legacy. The contact stated that while driving at an undisclosed speed, a loud popping noise was heard, and then a crack formed from the bottom of the windshield without impact. The vehicle was taken to a local dealer, where it was diagnosed that the windshield needed to be replaced. The vehicle was repaired; however, the contact stated that while driving at an undisclosed speed, the failure reoccurred. The vehicle was taken back to the dealer, where it was diagnosed that the windshield needed to be replaced another time. The vehicle was repaired; however, the contact stated that the failure reoccurred after she started the vehicle. The contact became aware of NHTSA Campaign Number: 22V712000 (Visibility); however, the VIN was not included in the recall. The manufacturer was made aware of the failure and the contact was advised to file a complaint with the NHTSA Hotline. The failure mileage was unknown.
Electrical
Reports naming the electrical system — wiring, battery, charging, control modules, infotainment and electrical accessories.
From owner reports, verbatim
The battery has died several times and had to be replaced over the years due to a likely slow drain issue that Subaru is well aware of and was part of a class action suit against them.
The key frequently gets stuck in the ignition. It takes several attempts to release the key. Turning the wheel to ensure the wheel isn’t locked and turning the ignition/car on does not help release the key from ignition.
Steering
Reports naming the steering system — racks, columns, power-steering assist and steering linkage.
From owner reports, verbatim
Electric Power Steering failure
Purchased the car used took to dealership for rattle from front end, they diagnosed and recommended replacement of steering rack as it was defective, so it was replaced, a month later same noise, same diagnosis, replaced again, repeated this 7 times and they have reconfirmed it is the rack, the dealership technician states it’s the rack and not as it should be. The manager however is trying to state now that it’s a normal noise and they won’t warranty the repairs anymore. It continues to get worse and louder and feels unsafe to have defective steering racks on the roadways that are non repairable. I’ve reached out to corporate Subaru as well and they can only make decisions based off info the manager gives them which is opposite of what the technicians state. Please help me this car is unsafe.
Airbags
Reports naming the air-bag system — deployment behaviour, inflators, sensors and warning lights.
From owner reports, verbatim
The OCS sensor is faulty and doesn’t detect a passanger and may cause the airbag not to deploy, this is common according to other Subaru owners. This is a common problem on many cars and those cars have been recalled
The contact owned a 2017 Subaru Legacy. The contact stated while driving approximately 40 - 45 MPH on a two-lane road, he attempted to overtake the driver in front and crashed head-on into a vehicle coming in the opposite direction. The contact stated that the driver's front air bag failed to deploy however, both side curtain air bags deployed as needed. The contact stated that he suffered two fractures to his sternum along with other chest injuries. The contact stated that he was informed by the police officer that the other driver did not require medical attention. The contact was transported from the scene by ambulance to the local hospital. A police report was filed. The vehicle was towed to a tow lot. The contact stated that the insurance provider declared the vehicle a total loss. The contact attempted to reach the manufacturer on several occasions but was unable to speak with a representative. The approximate failure mileage was approximately 20,000.
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
Hood released and blew open while doing 50 mph. After checking oil level, I closed and verified hood was latched, which it was. Driving about 2miles down road, hood blew up causing instant panic and stopping. After pulling over, I found that the hood would no longer latch. I had to use a hammer to bend the latch forward enough to have it latch again.
The contact owns a 2017 Subaru Legacy. The contact stated that there was air noises coming into the vehicle from the vents of the vehicle. The contact took the vehicle to the dealer who stated that they believed the noises were coming from near the mirrors of the vehicle. The vehicle had not been repaired. The manufacturer was made aware of the issue. The approximate failure mileage was 20,000.
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
I drove into the parking lot of Walgreens, then drove around and pulled into a parking spot facing the south side of the building and put my foot on the brake to stop and park. Instead of stopping, the car suddenly lurched forward violently and slammed into the brick wall of the building. My wife called 911 since I told her my chest really hurt. When the police came, I told them my foot must have slipped off the brake and hit the accelerator, since I had no idea what else might have caused the car to accelerate like that. My wife drove the car home and then drove to the ER where the EMTs had taken me. A CT scan showed that I had a fractured sternum, since my chest hit the steering wheel full force after the air bags failed to deploy. I was in excruciating pain for a few weeks, and after I felt better, we submitted a claim to our insurance company. We then took our 2017 Subaru Legacy to a certified Subaru collision repair center. We were shocked to find that the car was totaled, since it was still drivable. Something kept bothering us about the crash, since EyeSight should have applied the brakes if I had accidentally accelerated and it detected a brick wall in front of our car. After some research, we stumbled on the information about the Class-Action Lawsuit that was just settled by Subaru for reports of Sudden Unintended Acceleration (SUA). The description of what happens with SUA was exactly what I experienced, but this was the first we had heard of it. We were never notified about the lawsuit, even though our VIN number shows our car was involved. Our Subaru dealership had all our contact information since we bought our Legacy from them and they have done all the maintenance work on it. Unfortunately, we released our car to Copart as part of our insurance settlement, so there’s no way to check the EDR data. PLEASE let others know about this major safety issue before anyone else is seriously injured!
The mirror drivers side mirror wiggles. I. The even of a battery failure the electrical brake may fail
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
When i brought car in for an oil change. cam carrier leak, was reported to me that there was a cam carrier leak. When i look online there are countless reports of this. Seems like there could be something faulty with the engine. Subaru offered to cover the repair as a 1 time curtesy. But if there is an issue with the design of an engine then this should be looked at further. The rear brushings are also failing don't think this should happen so quickly, maybe faulty brushings. no warning lights.
When running on a highway and you press down on the accelerator hard to merge onto a highway or go around a vehicle to move out of the way of vehicles quickly coming up behind you, the engine takes over and speeds up on its own. It has occurred three times on a newly purchased used car and it will increase speed up to 100mph. You have to press intermittently on the brakes to pull over to the shoulder and turn off the car for five minutes for the car to reset. If you try to just break, you get a burning smell. I see two class action lawsuits on similar acceleration issues for 2015 to 2017 Outback/Legacy series.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Driver assistance
Reports naming forward-collision avoidance, lane keeping, back-over prevention, cruise control and related electronic driver-assistance systems.
From owner reports, verbatim
I drove into the parking lot of Walgreens, then drove around and pulled into a parking spot facing the south side of the building and put my foot on the brake to stop and park. Instead of stopping, the car suddenly lurched forward violently and slammed into the brick wall of the building. My wife called 911 since I told her my chest really hurt. When the police came, I told them my foot must have slipped off the brake and hit the accelerator, since I had no idea what else might have caused the car to accelerate like that. My wife drove the car home and then drove to the ER where the EMTs had taken me. A CT scan showed that I had a fractured sternum, since my chest hit the steering wheel full force after the air bags failed to deploy. I was in excruciating pain for a few weeks, and after I felt better, we submitted a claim to our insurance company. We then took our 2017 Subaru Legacy to a certified Subaru collision repair center. We were shocked to find that the car was totaled, since it was still drivable. Something kept bothering us about the crash, since EyeSight should have applied the brakes if I had accidentally accelerated and it detected a brick wall in front of our car. After some research, we stumbled on the information about the Class-Action Lawsuit that was just settled by Subaru for reports of Sudden Unintended Acceleration (SUA). The description of what happens with SUA was exactly what I experienced, but this was the first we had heard of it. We were never notified about the lawsuit, even though our VIN number shows our car was involved. Our Subaru dealership had all our contact information since we bought our Legacy from them and they have done all the maintenance work on it. Unfortunately, we released our car to Copart as part of our insurance settlement, so there’s no way to check the EDR data. PLEASE let others know about this major safety issue before anyone else is seriously injured!
When running on a highway and you press down on the accelerator hard to merge onto a highway or go around a vehicle to move out of the way of vehicles quickly coming up behind you, the engine takes over and speeds up on its own. It has occurred three times on a newly purchased used car and it will increase speed up to 100mph. You have to press intermittently on the brakes to pull over to the shoulder and turn off the car for five minutes for the car to reset. If you try to just break, you get a burning smell. I see two class action lawsuits on similar acceleration issues for 2015 to 2017 Outback/Legacy series.
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
Major fuel leak within engine bay
The catalytic converter has been replaced twice and is now needing a third replacement. The car emits gas fumes, unsafe emissions, and the fuel causes the mechanism to be extremely hot and unsafe. Over time, the car has had reduced gas flow and will stop running. The dealer has confirmed the three converters installed have been defective. The manufacturer, Subaru, was contacted to inspect the car but refused. Precious years have recalls of the fuel mechanisms. The check engine light stays on when unsafe emissions are detected.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Powertrain (other)
Powertrain reports that are not specifically the engine or transmission — driveshafts, axles, transfer cases and differentials.
From owner reports, verbatim
On May 16, 2023 I was driving a friend home. We were stopped at a red light and felt an impact. My friend said, "You've been hit." I went out to check. No one had hit the car. It had lurched forward while my foot was on the brake. On 6/1/23 I pulled out of a driveway, car was in drive, foot on brake, paused to set GPS, car lurched forward. I brought to the dealer. They said they drove it for seven miles and could not duplicate the problem. About a year prior, the car had also lurched, but at that time I was in drive doing approx 30 mph, and I used the brake to slow it back to my speed. At that time the dealer found some leak in the transmission and, I believe, changed a gasket. These problems are intermittent and did not register on the car's computer, according to the dealer. Have you had any such complaint? Is my car safe?
Driving to work in the morning I began slowing down for a red light. When the vehicle get to ten miles an hour there was a loud bang and felt like the car downshifting. I stopped and checked nothing was abnormal , no warning lights or and signs of damage or failure and the vehicle continued to function normally. So I proceeded to work roughly 20 miles. About 30 minutes later as I was on the off ramp and at about the same speed of 10 miles per hour the vehicle had multiple loud bangs followed but screaching and metal grinding. I was at my job so I pulled into the parking lot as to not get stuck in the road. The vehicle made one more louder bang and all the warning light illuminated and the vehicle lost all ability to drive. Underneath was a puddle off oil. This vehicle has 89,000 miles and to have thus happen to the transmission for no apparent reason was a shock and disappointment. I felt my heart drop as this morning could have ended alot worse while I was on the road and express way surrounded by other motorist. Transmission should not disintegrate or complete fail at this mileage unless they are defective. This was not what was expected in safety and durability from this manufacturer.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Other / unspecified
Reports whose component NHTSA recorded as unknown, or that do not map to one of the categories above.
From owner reports, verbatim
I NOTICED 1 OF THE ORIGINAL TIRES THAT CAME ON MY NEW SUBARU LEGACY HAD A SIDEWALL BULGE. WHEN LOOKING AT THE WHEEL YOU COULD NOT SEE ANY MAKES TO INDICATE I HIT A POT HOLE OR CURB. ABOUT A MONTH LATER I NOTICED ANOTHER TIRE HAD THE SAME ISSUE. THE DEALERSHIP LOOKED AT THE FIRST TIRE AND OFFERED TO REPLACE IT FOR FREE SINCE IT WAS UNDER WARRANTY WHEN I REPORTED IT. UNFORTUNATELY WHEN I SAW THE SECOND TIRE THE WARRANTY HAD LAPSED. WHILE WAITING FOR THE TIRES TO COME IN I DID NOTICE ONE OF THE BULGES HAD DOUBLED IN SIZE. IN THE TIME I SAW IT FOR THE FIRST TIME AND REPLACING IT I PUT NO MORE THAN 300 MILES ON THE CAR.
AFTER PURCHASING MY VEHICLE IN NOVEMBER, MY STEERING FELT OFF IN DECEMBER. A COUPLE WEEKS LATER MY TIRE PRESSURE LIGHT CAME ON. I TOOK MY CAR IN FOR SERVICE AND THERE WAS A NAIL IN MY TIRE. SUBARU REPAIRED THE TIRED. UPON LEAVING SUBARU, STEERING CONTINUED TO FEEL OFF . PULLING TO ONE SIDE CONSTANTLY. I TOOK THE CAR IN TO SUBARU AGAIN FOR A WHEEL ALIGNMENT ON JANUARY 23RD. THEY CONFIRMED IT WAS OUT OF ALIGNMENT AND FIXED IT. THE CAR DROVE GREAT FOR 2 WEEKS AND AGAIN IT IS OFF. CAR IS EXTREMELY HARD TO KEEP IN THE LANE; IF IT IS WINDY IT IS EVEN WORSE. NO MATTER IF I AM GOING UNDER 30 OR ON THE HIGHWAY. THE STEERING WHEEL DOES NOT ALIGN WITH THE WHEELS AGAIN. I HAVE DRIVEN THE SAME ROUTE TO WORK EACH DAY M-F FOR 5 YEARS. THERE ARE NO POT HOLES. IT IS A SHORT COMMUTE HOWEVER I AM STARTING TO FEEL UNSAFE DRIVING. DO I TAKE IN THE CAR AGAIN? I LOVE THE CAR BUT EITHER THE TIRE IS BAD OR THE ALIGNMENT/STEERING IS BAD.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Suspension
Reports naming suspension components — springs, struts, shocks, control arms and related hardware.
From owner reports, verbatim
When i brought car in for an oil change. cam carrier leak, was reported to me that there was a cam carrier leak. When i look online there are countless reports of this. Seems like there could be something faulty with the engine. Subaru offered to cover the repair as a 1 time curtesy. But if there is an issue with the design of an engine then this should be looked at further. The rear brushings are also failing don't think this should happen so quickly, maybe faulty brushings. no warning lights.
Vehicle is difficult to control, especially when driving on uneven roads, or when it is windy. It takes a lot of effort to keep the car in one lane. The ride is rough, and you can hear and feel every little bump in the road. More than a rough ride, this will oftentimes throw my vehicle off path which feels like the car is not in my control momentarily. For instance, it will follow the direction of any cracks/grooves in the road, despite both my hands being on the wheel. This deviation requires immediate correction or risk collision. A passing vehicle moving at a high rate of speed will also push my car off track, which is obviously dangerous on the freeway.
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
TIRE SIZE - 225/50R19. MY 2017 SUBARU LEGACY HAS APPROXIMATELY 17,000 MILES. AS I HAND WASH MY CAR I NOTICED THAT ALL 4 TIRES HAVE SIGNIFICANT CRACKS ON THE SIDEWALL. I'M CONCERNED ABOUT DRIVING MY CAR ON THE HIGHWAY AND I OFTEN PICK-UP OUR 3 GRANDCHILDREN FROM SCHOOL WHICH ALSO CONCERNS ME. THESE ARE MY OBSERVATIONS BUT I'VE ALSO READ A FEW SIMILAR ISSUES ON THE GOODYEAR WEBSITE BUT THEY REFERRED TO THE PROBLEM AS DRY ROT? THANK GOD NO ACCIDENTS OR FLATS BUT I HAVE PROBLEMS WITH THE TIRES LOSING AIR. I JUST WANT PIECE OF MIND AND I WILL GO TO A GOODYEAR TIRE DEALER SOON TO GET THEIR OPINION. HOPE TO HEAR BACK FROM YOU SHORTLY. THANK YOU!
Too few reports in this category for a page of its own — they appear in the full complaint list.
Transmission
Reports naming the automatic or manual transmission, including shifting behaviour, shudder, slipping and transmission control modules.
From owner reports, verbatim
A 2017 Subaru Legacy was stopped on a hill, on the shoulder of a two lane service road. The driver, who was the car owner, placed the gear selector in park, left the motor idling, exited the vehicle, closed the driver side door, loaded several logs into the trunk, and slammed the trunk. The passenger remained in the vehicle, seated in the passenger seat. The motor idled for about 10 minutes after the driver exited the vehicle. No alarms sounded to alert the driver or passenger that the car was not left as intended—motor running and in park. The vehicle remained completely stationary for about 10 minutes until the passenger reached over and pushed the ignition button to turn off the engine. At this time, the vehicle started to roll forwards down the hill. The passenger was not able to climb over the center console into the driver seat, but found she was was able to steer the vehicle. The passenger steered the vehicle by reaching over from the passenger seat. The passenger steered the vehicle onto the service road and away from a group of people standing on the shoulder in front of the car down-hill from the vehicle. She steered the vehicle through an open chain-link gate. The service road ends at the bottom of the hill in a T with a public road— Glenallen Avenue. The car crossed the public road that momentarily was without traffic. The car continued onto the shoulder on the far side of Glenallen Avenue where it finally was stopped by crashing into a tree. The air bags deployed. The passenger sustained a fractured left hand, a fracture of the right shoulder and sprained right foot. The passenger pushed the ignition again and the gear selector in case the engine was still running, because she feared a potential explosion. Her injuries required medical attention, and she was taken by ambulance to a local hospital. A police report was filed. The vehicle was towed to a towing lot. The car manufacturer was contacted. The insurance company determined that the vehicle was destroyed and not able to be repaired. The approx
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
The car had been going on several local stops. Car was in the middle of a main thoroughfare ready to turn on to interstate ramp when the car completely stopped functioning. Battery light came on briefly before the vehicle became completely non-responsive. Among other things non-functioning, Emergency lights would not work, electric park brake would not engage. Could not get out of car to flee danger as car would freely roll and no way to stop except to hold brake with foot pressed. Ultimately car was chocked and jumped by AAA tow truck. Technician said battery was dead but alternator was working when he started it up. After 3 days of diagnostics, Subaru dealer cannot find a fault which let the new auto battery simply drain to nothing state and thus make the car non-responsive. Thank the good Lord this did not happen after turning on to the interstate.
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 .