The brake line junction box rusted through. This is a known issue with Subarus of this general era but the 2012 Outback is not on the recall list. Owner noticed brake fluid was getting low, after recently refilling the reservoir. Took the car to a shop and the brake light came on day of. The shop confirmed the brake line junction box was rusted through and leaking. Owner was advised that they were days away from a complete brake failure from a larger leak developing and brake pressure dropping catastrophically. As stated before this is a known issue Subaru recall campaign WQK-47. Looking online has revealed numerous Subaru owners experiencing the same problem.
2012 Subaru Outback brakes problems
40 complaints (14% of all complaints for this car). Typical mileage when it fails: 82,000. 3 crashes reported.
- owner complaints
- 40
- of this car's complaints
- 14%
- typical mileage
- 82,000
- crashes
- 3
- recalls
- 2
Which part fails
Owners did not name a specific part.
At what mileage
Complaints by mileage at the time of the problem.
Subaru Outback brakes problems in other years
Specific symptoms reported on the 2012 Subaru Outback brakes
Phrases found in the owners' own descriptions, so one complaint can mention several symptoms.
Related recalls
Parking brake
- What is wrong
- Subaru of America, Inc. (Subaru) is recalling certain 2010-2014 Subaru Legacy and Outback vehicles equipped with a manual transmission. The electronic parking brake (EPB) may not engage as intended, allowing the vehicle to rollaway if the transmission is not in the proper gear when parked.
- Risk
- A vehicle rollaway can increase the risk of a crash.
- Remedy
- Subaru will notify owners, and dealers will replace the EPB actuator assembly, free of charge. The recall began July 19, 2019. Owners may contact Subaru customer service at 1‑844‑373‑6614. Subaru's number for this recall is WTV-81.
Recall number 18V626000 · Recall details
Service brakes, hydraulic: pedals and linkages
- What is wrong
- Subaru is recalling certain model year 2012 impreza sedans and wagons (except wrx/sti models), manufactured from april 21, 2011, through november 15, 2011, and legacy and outback vehicles manufactured from october 17, 2011, through november 23, 2011. These vehicles may be equipped with a brake master cylinder that could malfunction and cause an increase in the amount of brake pedal travel distance required to slow or stop the vehicle.
- Risk
- The driver might misjudge the amount of brake pedal travel required to achieve the desired stopping distance. This could occur unexpectedly and without prior warning, increasing the risk of a crash.
- Remedy
- Subaru will notify owners, and dealers will inspect the brake master cylinder and if necessary, replace it, free of charge. The safety recall is expected to begin during december 2011. Owners may contact subaru at 1‑800‑782‑2783.
Recall number 11V562000 · Recall details
What 2012 Subaru Outback owners say
Most recent owner complaints, unedited.
Brakes failed completely due to excessive rust / corrosion on brake line junction area. Brake pedal suddenly went to floor and fluid leaked out near right rear quarter of vehicle in-front of right rear tire.
The brake pedal suddenly went almost to the floor while attempting to stop. Researching I found there was a recall. the federal safety agency Recall No. 11V‑562. My car was not apparently among the ones being recalled, yet this problem is exactly as described in the bulletin. The component in question is the master brake cylinder. It is available for inspection. It happened on Sat Sept 20 2025 returning from a trip approximately. 300 miles away. the symptom persists. There were no warning indicators.
I took my Outback to my local highly respectable mechanic on August 20, 2025 as I needed the oil changed and the concern I had about having to add brake fluid twice in the past 4 months. He inspected my car immediately and he refused to let me drive it out of his shop as there is a dangerous brake line leaking issue that could result in brake failure. He told me that my Outback is not the first that he had to repair this “Subaru manufacturing defect”. I had to get it repaired. I checked to see if there was a the federal safety agency recall on my Outback year and there was none, only prior years. Yet when I went online searching more, I found an article that stated that Subaru was going to recall the 2012 Subaru as well? The repair shop owner said to us that my wife is a "gentle driver" and that was good, because, if she had to apply the brakes very hard to avoid a collision, they probably would have failed. Please understand that I read the recall for previous years of Outbacks and other Subaru models, and my Subaru Outback had the exact same defect. I did contact Subaru of America and they responded that my Outback does not have a recall, only prior years. Unbelievable!!! The exact same make and model with the exact same defect and they just blow me off! I was lucky that we did not reach the point of a serious accident. I hope that the federal safety agency will evaluate my, and I am sure other safety issues with Subaru brakes, and take some action to give other owners the opportunity to make this very serious safety matter right, and avoid an accident. In a related question, can the federal safety agency somehow require auto manufacturers to inspect their vehicles that are still on the road after say 12 years to helpfully provide some safety assurance to the drivers of their vehicles?
Rear four way brake junction is completely corroded and leaking fluid causing a complete loss of braking. This appears to be the exact same issue as referenced in this recall [XXX] ) that affects previous model years. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
The rear brake lines sprung a leak in a well-known trouble spot with Subarus. The junction area underneath the passengers rear seat is where brake fluid is leaking from. I was driving under normal conditions, went and depressed the break and the pedal went to the floor. The cars brakes were not performing and upon inspection I found the leak. I researched this issue and found that Subaru did acknowledge this issue and other outback model years through recall and technical service bulletins. This is a significant safety issue and should be upgraded to a recall.
The contact owns a 2012 Subaru Outback. The contact stated while driving 20 MPH, the brake pedal was depressed and went down to the floorboard, increasing the stopping distance. There was no warning light illuminated. The contact was able to drive the vehicle to his residence despite the failure. The vehicle was then taken to the dealer, where it was diagnosed that the four-way brake connector was corroded and had started leaking brake fluid. The manufacturer was notified of the failure and informed the contact that there were no recalls on the VIN. The vehicle was not repaired. The failure mileage was approximately 150,000.
My Subaru Outback, at roughly 110,000 miles, displayed a dash indicator suggesting low brake fluid. After investigating, I found a brake line junction under the car, below the rear passenger seat. This 4-line junction is hidden behind a plastic cover that does have a removable inspection window. The junction's 4-lines are all corroded and at least one is leaking. After finding the issue and researching fixes online, I have discovered that this is a previously-reported problem although Subaru has not taken action to address it. I have not taken action to fix the issue as I am working out the best fix, but will not be driving the car until the leaking corroded junction is repaired.
The contact owns a 2012 Subaru Outback. The contact stated she starting the vehicle and there was an abnormal noise coming from the engine. The contact stated while reserving, she was depressing on the brake pedal but failed to stop the vehicle, causing her to rear into 2 vehicles. The contact was not aware if there were any warning lights illuminated. The contact stated she continued to depress the brake pedal for almost 10-20 feet from where she started until it stop the vehicle completely. The air bags did not deploy. The contact did not sustain any injuries or seek medical attention. A police report was filed. The vehicle was towed to a towing lot. The vehicle was not diagnosed or repaired. A dealer was not contacted. The manufacturer had not been informed of the failure. The failure mileage was unknown.
Our low mileage car which we bought new and is under 10 years old experienced a complete brake failure in our driveway. The brake warning light did then come on. The brake pedal went to the floor when pressed. This event immediately followed a trip with a considerable passenger and luggage load on steep hills where complete brake loss would have been catastrophic and endangered us and the public. The dealer is familiar with the problem (rust-through of brake lines in a specific, well-known location). I am astonished to now learn that earlier years of Outback and other models are the subject of NHSTA 14V‑311 and a Subaru product safety campaign WQK-47R to inspect and replace or protect the brake lines that just failed in our car, specifically in the vicinity of the 2-2way connector, however our car is not covered by this campaign. I've attached a picture of the corroded lines on our car which is essentially identical to the picture of the 2-2way connector on . This failure is compounded by the lack of a conventional emergency/parking brake, as the steps to engage the vehicle's electronic parking brake while the vehicle is in motion and picking up speed are not obvious.
Questions about the 2012 Subaru Outback brakes
Does the 2012 Subaru Outback have brakes problems?
Owners have filed 40 complaints about the brakes of the 2012 Subaru Outback, 14% of all its complaints.
At what mileage do 2012 Subaru Outback brakes problems start?
The typical (median) mileage in owner complaints is 82,000 miles.
Was there a recall on the 2012 Subaru Outback brakes?
Yes, 2 recalls: 18V626000, 11V562000. Check your VIN to see if your car still needs the free repair.
What year does the Subaru Outback have bad brakes?
The Subaru Outback model years with the most brakes complaints are 2011 (78 complaints), 2010 (40 complaints) and 2012 (40 complaints).
Other 2012 Subaru Outback problems
Transmission 108Engine 52Airbags 39Electrical 37Lights 18Steering 9Visibility 9Acceleration 8Body 6Driver assistance 5Fuel system 4Seats 4Suspension 4Seat belts 3Wheels 2
VIN decoder
See the problems and recalls for an exact car
Buying a used 2012 Subaru Outback?
Check the exact car before you pay: accidents, salvage or flood titles, odometer readings and previous owners.
Check its history