2012 Subaru Outback Brake Problems

Mileage when the problem started

• Under 25k
  519%
• 25k–50k
  415%
• 50k–75k
  415%
• 75k–100k
  312%
• 100k–150k
  623%
• 150k+
  415%

Owner reports

Selected complaints filed with NHTSA by 2012 Subaru Outback owners, lightly cleaned up (personal details are redacted by NHTSA).

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.

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.

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 was driving to work and applied the brakes to slow the vehicle while descending a hill and the pedal went almost down to the floor before the brakes took hold. I got the vehicle under control and proceeded toward the stop sign. I attempted to applied the brakes again and the vehicle went nearly through the intersection before I could get the car stopped. This happened at two more stop signs before I was able to pull into a parking spot at work. After the first stop sign incident, I drove very slowly to work, so as to not use the brakes but for stopping. A mechanic has looked at the car and determined the master cylinder is bad. The part number has been recalled for some vehicles, but not for my car, as determined by the VIN. No warning lights are on. …

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 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.

Brakes failed on the highway and it appears to be the brake lines as outlined in a Subaru Brake Line Recall. Of course I own a 2012 Outback which was not covered and now have a very expensive repair bill. Subaru and the NHTSA annouced that the recalled models include the model year 2008 to 2011 Impreza, 2008 to 2014 WRX and STI and 2009 to 2013 Forester crossover SUV. All affected cars are currently or were formerly registered in the snowy states, where salt is applied to the roads. It was duly noted that these vehicles were previously subjected to another safety campaign, which was given the 14V-311 recall number.

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 brake pedal suddenly went almost to the floor while attempting to stop. Researching I found there was a recall. NHTSA 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.

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 [redacted] ) that affects previous model years.

Related recalls

Brake complaints in other Outback years