377 of the
4,165 complaints filed about the Subaru Legacy
are about the transmission —
9% of everything owners reported.
The worst model year for it is 2010.
377
Complaints
9%
Share of all complaints
12
Crashes
6
Fires
Transmission & Drivetrain complaints by model year
2015 Subaru Legacy 2.5i, approximately 48,000 miles. CVT transmission failed suddenly with no prior warning signs. Vehicle was exclusively dealer-serviced for its entire life. While driving, the transmission began shuddering, slipping, and making metallic grinding noises. Vehicle could barely climb a small ramp and was locked in limp mode, making it unsafe to operate in traffic. Diagnostic codes P0841, P0700, and C1431 were stored. Authorized Subaru dealer confirmed the failure. Technician stated the valve body likely failed first — a known defect per Subaru TSB 16-107-17R — which then caused the CVT chain to slip. Dealer quoted $11,000 for a remanufactured CVT replacement. Service representative stated she had never seen a transmission need replacement at such low mileage. No warning lamps or symptoms existed prior to sudden onset. CVT fluid was never changed, consistent with the manufacturer's U.S. maintenance schedule. This vehicle falls under Subaru's CVT Warranty Extension covering 2010-2015 Legacy models due to known defects. Vehicle is well under the 100,000-mile limit but approximately 13 months past the 10-year time limit. I opened a case with Subaru of America Customer Advocacy. My dealer informed me that Subaru Corporate contacted them and communicated a decision regarding my case, but Subaru has never communicated any decision to me directly. Multiple emails, a voicemail, and a request for escalation have gone unanswered over several days. This failure poses a safety risk as the transmission can fail suddenly and without warning while in motion, potentially with passengers including children.
NHTSA complaint #11723218 — an unverified report by a vehicle owner.
My 2012 Subaru Legacy experiences involuntary engine stalling when coming to a quick stop, such as in stop-and-go traffic or during sudden braking at intersections. When the engine shuts off without warning, power steering and braking assist are lost, creating a serious risk of collision. This is a known issue documented by Subaru of America in Technical Service Bulletin 16-90-13R, applicable to 2010–2012 Legacy and Outback vehicles with CVT transmissions. Subaru attributes the condition to excessive thrust washer wear inside the torque converter, which prevents proper release of lock-up clutch pressure. Subaru describes the condition as similar to stopping a manual transmission vehicle without depressing the clutch, which inherently results in engine stalling. Subaru later redesigned the torque converter as a countermeasure beginning in October 2013, indicating prior knowledge of a defect. However, Subaru never issued a recall or notified owners and addressed the issue only through a non-customer-facing service bulletin. I contacted Subaru Customer Advocacy to report this safety concern and request assistance with the repair (quoted over $4,000). Subaru acknowledged my concern but declined responsibility, citing the vehicle being out of warranty and stating that TSBs are not customer facing. Subaru did not confirm whether the vehicle is safe to drive with this condition. This issue represents a safety defect, not a warranty dispute. Vehicles that can stall unexpectedly during normal braking events pose a serious safety risk, and many affected vehicles remain on the road today.
NHTSA complaint #11706789 — an unverified report by a vehicle owner.
Car intermittently will studder and not go into first gear or go into second gear dangerously having car bog down and almost stall and then it violently downshifts having car RMP Hague go very high then slip and have no power to wheels and then a few seconds later go into second gear violently taking off again. Have tried taking issue to dealer but won’t even look unless check engine light comes on. Which it sometimes will for this issue and will shut back off before my short drive to dealership. Very frustrated especially being my first new car paying monthly to have this problem
NHTSA complaint #11700919 — an unverified report by a vehicle owner.
An issue has surfaced with my car that it turns off while driving. Obviously this is a serious safety hazard and likely to result in an accident. Now that it has happened, it is continuing and frequently happening. I reached out to Subaru as I saw there was a recall for my car's make and model that is causing the same issue. The issue is listed as NHTSA CAMPAIGN ID: 19V297000, described as "The engine turning off unexpectedly can increase the risk of a crash. " and affecting many Subarus, including the 2011 legacy. I believe my car is impacted given the behavior it is exhibiting. When I reached out to Subaru, they dismissed it saying it did not apply to my car and they were not willing to investigate. I believe this poses a grave risk to many people given that it will cause an accident and the severity of the defect.
NHTSA complaint #11695074 — an unverified report by a vehicle owner.
The week after purchase: The car shuts off when braking and needs to be put into park to be started again. Also the check engine light came on and I wonder if it has electrical issues.
NHTSA complaint #11694423 — an unverified report by a vehicle owner.
CVT Transmission Failure. Failure occurred at approximately 66,706 miles on 5/16/25. The Check Engine and AT Temp lights appeared in the instrument cluster. The driving conditions when this happened were a safety concern. First, the vehicle would crawl, shutter, and almost stall with high RPMs when attempting to climb a hill. Second, on a level surface at any given time the vehicle would not respond then lunge forward unexpectedly. The vehicle was inspected by a Subaru Dealership and the diagnosis was "Internal failure of transmission". The transmission needs to be replaced. The same driving conditions and error codes were experienced by an AAMCO Transmission repair facility. The diagnosis was codes P0843 and P0867 present prompting the transmission to be replaced. This repair was completed on 6/4/25. The failed transmission is no longer available.
NHTSA complaint #11674975 — an unverified report by a vehicle owner.
CVT failed at 85,000 miles. It started slipping and squealing and had to be replaced by the dealership. The car was never driven rough, in mountainous terrain, etc. Very disappointing.
NHTSA complaint #11672332 — an unverified report by a vehicle owner.
The contact owns a 2014 Subaru Legacy. The contact stated that the vehicle hesitated before accelerating. The contact stated that there was a lag in the vehicle while driving and attempting to accelerate above 65 MPH. The contact stated that the vehicle failed to start immediately, and several attempts were needed to start the vehicle. The failure was intermittent; however, the failure was persistent while using the remote start feature. The vehicle was taken to the dealer and the contact was informed that the failure might be related to NHTSA Campaign Numbers: 19V297000 (Electrical System) and 13V336000 (Power Train); however, the VIN was not included in the recalls. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was 50,000.
NHTSA complaint #11642720 — an unverified report by a vehicle owner.
Believe the torque converter in the cvt transmission is causing the vehicle to stall. Happened multiple times going through an intersection and was almost side swiped. Was an extended warranty on cvt but no recalls for it yet.
NHTSA complaint #11641208 — an unverified report by a vehicle owner.
My Subaru ran perfectly fine until the water pump and cooler lines got replaced after these were replaced it was tried to be driven and the car then had no idea what gear it was in drive is drive neautral is drive and reverse does not work at all paddle shifters won’t work AT oil temp light check engine light brake light flashing cruise control light all came on and the car will only go forward and it’s making some crazy shutter noises when you start it and sometimes it shuts off after it was started.
NHTSA complaint #11621344 — an unverified report by a vehicle owner.
The contact owned a 2015 Subaru Legacy. The contact stated that while the vehicle was parked, the contact opened and closed the trunk, triggering the alarm system. The alarm system failed to deactivate immediately. The vehicle then failed to restart as needed, and the "Shift to Park" message was displayed while the transmission was in park(P). The vehicle was towed to the dealer, where the brake fuse was replaced; however, the failure persisted. The contact replaced the brake fuse for a second time, but the failure recurred. The vehicle was towed back to the dealer, where an unknown repair was performed. The contact later sold the vehicle. The manufacturer was not made aware of the failure. The failure mileage was approximately 175,000.
NHTSA complaint #11615990 — an unverified report by a vehicle owner.
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 complaint #11564299 — an unverified report by a vehicle owner.
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 — an unverified report by a vehicle owner.
There was a recall for my 2016 Subaru Legacy transmission issue (CVT), I got a letter from Subaru on 9/23/2018 which extended warranty for 2016-2017 Legacy/Outback CVT from 5 years/60000 miles to 10 years/100000 miles, started from 9/30/2019. The transmission of my Subaru started making noise half year ago which was still under warranty, at that time I didn't think it was a big deal and totally forgot the letter from Subaru, however, the noise is aloud and unbearable now, the mileages of my car is about 5000 miles exceeding 100000 miles warranty, which I need to pay $8200 to replace transmission per Subaru client service USA. After browsing online, I have noticed that the issue of CVT on Subaru Legacy is common, in this case, Subaru should replace such defective CVT for free, at least for the part.
NHTSA complaint #11543478 — an unverified report by a vehicle owner.
POWER TRAIN:AUTOMATIC TRANSMISSION:TORQUE CONVERTER
The contact’s wife owns a 2010 Subaru Legacy. The contact stated that while driving at undisclosed speeds, the vehicle hesitated and stalled. The contact was able to restart the vehicle. No warning light was illuminated. The vehicle was taken to the dealer where it was diagnosed that the torque converter had failed and needed to be replaced. The vehicle was not repaired. The manufacture was notified of the failure and the contact was informed that the warranty had expired but no further assistance was provided. The failure mileage was approximately 179,000.
NHTSA complaint #11543205 — an unverified report by a vehicle owner.
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 — an unverified report by a vehicle owner.
Vehicle had significant amount of oil pooled in the battery case holder back approximately Jan 2022 or earlier. Contacted Subaru of Las Vegas and they offered to clean the vehicle believing it was a careless oil change. Next oil change Subaru said I had a minor oil leak. Took it to an outside vendor to have them look at it and they said I didn't have an oil leak. Every oil change after that subaru continued to say I had a leak. But, my oil levels never changed enough to show low oil. Took it to the same vendor again and again they said no oil leak. Took it to another vendor and they changed the gasket cover and leak, but mentioned there was a leak with the cam carrier that needed to be revealed. They recommended taking it to their neighbor vendor that specializes in Subaru and they looked at it and confirmed, but mentioned to contact Subaru and that it should be a covered repair as it is a known issue with Subaru and that they were currently working on one with the same issue. While recently driving it, I noticed what smelled like burning oil. When I looked online I can see numerous years and models of owners reporting the same issue with their Subaru. Contacted my dealer and they said it wasn't covered. Contacted Subaru of America and they are currently investigating it. If your camshaft seal is leaking oil, you need to get it replaced right away. The leak can lead to a fire, and your engine could seize up. It can also damage your timing belt which can cause bent valves, cylinder head damage or camshaft damage. Prior to this, I actually have already repaired the timing belt. I want to ensure that no injury or damage comes to another Subaru vehicle owner having the same issue. I have also just had to repair both axles and my Subaru is a 2016 with 90,000 miles on it.
NHTSA complaint #11536054 — an unverified report by a vehicle owner.