Mileage when the problem started
Owner reports
Selected complaints filed with NHTSA by 2015 Subaru Outback owners, lightly cleaned up (personal details are redacted by NHTSA).
The contact owns a 2015 Subaru Outback. The contact stated while driving at 20 mph, the brakes would not engage as the brake pedal was depressed. As a result, the vehicle rear-ended a parked vehicle on the side of the road. The air bags failed to deploy. A police report was not filed. Three of the passengers in the vehicle sustained head and neck injuries that required medical treatment. The vehicle was drivable and was taken to a local dealer where it has been for 5 months. The vehicle was diagnosed with nothing needing to be replaced. The manufacturer had been informed of the failure and referred the contact to the dealer to have the engineers look at the vehicle. The failure mileage was 56,000.
The contact owns a 2015 Subaru Outback. The contact stated that while driving 67 MPH with the cruise control activated, the vehicle suddenly decelerated to approximately 25-30 MPH while depressing the brake pedal. The contact stated that the vehicle stalled. After pulling over to the side of the roadway, the contact was able to restart the vehicle and drove to the residence. The vehicle was taken to the dealer however, the cause of the failure could not be determined. The contact's wife stated that the failure had occurred a year prior while driving approximately 55 MPH. The failure only lasted for several seconds. The vehicle had not been diagnosed or repaired. The manufacturer was made aware of the failure. The approximate failure mileage was 80,700.
The contact owns a 2015 Subaru Outback. The contact stated while the vehicle was at the dealer for an oil change and snow tire replacement, the contact was informed that the sub frame and the brake lines were severely corroded and needed to be replaced. The vehicle was taken to a second dealer, 802 Toyota (30 Berlin Mall Rd, Berlin, VT 05602) for a Trade-In, and it was confirmed that the sub frame was corroded during the appraisal inspection. The vehicle was not repaired. The manufacturer was made aware of the failure and informed the contact that the failure was caused by salt damage; however, the contact stated that the vehicle was used for leisure rather than commute since the contact was retired. The failure mileage was 86,801.
I was within the town limits so I was driving slowly. When I approached the first stop light in town I saw that it was red. There were of three or four vehicles stopped at that light. At that point I was probably only going 5mph. I took my foot off of the gas pedal and put my foot on the brake to make a slow stop. Instead, the car accelerated rather quickly. I continued to brake but the car seemed to speed up. I was able to avoid hitting the truck in front of me by going around it. No vehicles were coming towards me but there were some stopped at the other side of the light. I drove up on the sidewalk to avoid hitting anyone. At that point the front passenger side of the car hit & snapped a pole. The car did not stop immediately upon impact. It stopped acclerating and came to a stop about 10 feet past the pole. …
The issue below has occurred previously and was addressed by a completed recall "EPB Reprogramming" - WTB63. However, issue has reappeared. Issue: The parking brake engages without engaging parking brake switch while parked and also blinks a red warning while driving. We had an issue a few days ago where brake engaged by itself in parking lot (even though parking brake light never came on). I managed to get the car out of park by turning the car on and off several times and also pressing parking brake switch. The car is scheduled for Subaru service on 5 June, they will be able to do more diagnostics after reading error codes. The dealer told me that parking brake should not engage while driving which is my main concern...but I'm also concerned about possibility of being stranded somewhere because I cannot turn off the parking brake.
While driving the Parking Brake warning light came on and the Subaru Eyesight system shut down. On stopping the car and restarting, the car got harder to drive. I pulled over again immediately as the parking brake was locking the wheels up. I got a tow truck to take the car to the Subaru dealer. By this time the rear wheels were completely locked up. If the car had to stop at a railroad crossing, the immobile car would be in a dangerous spot. The dealer service shop said there was Code C1411, C1194, C1956, C1942 and "Electronic Parking Brake Connector Failure". This was repaired under Warranty Extension Repair indicating that Subaru knew this was a serious problem but refused to do an emergency recall. Instead they intentionally allowed people to drive a dangerously defective vehicle.
January 25th, 2026 13:30 I was coming to a stop at an intersection with my foot on the brake pedal when suddenly my vehicle lurched forward potentially causing rear end collision with the truck in front of me that was stopped at the red light. My vehicle finally came to a stop when I pressed hard on the brake pedal. This problem happened today, so I have not reproduced it. I have not had it checked by a dealer (today is Sunday) I have a Low Tire Pressure light that came on two days ago when the temperatures suddenly dropped here in Tulsa, OK.
The electronic parking brake disengages on it's own after being set. After putting the vehicle in park and pulling on the EPB switch, the light comes on for a short time, then turns off. Attempting to re-engage it results in the same thing, it comes on briefly then disengages without being touched.
Slowing to a stop at a traffic light on a city street, manual transmission in neutral, clutch in. Speed roughly 2 km/hr. Went to stop the car with the brakes, brake pedal went to the floor with no brake activation. Tried brake pedal again, same result. Activated parking/emergency brake which also did not stop the car. Car hit the back of a gravel truck ahead, and seemed to continue to push into the truck 7-10 cm, which is further than I would have expected given the low speed of the collision. Collision damaged the hood of my car and broke the headlight lens on the passenger side, no damage to the truck, no injuries to occupants of either vehicle. Truck turned through turning light, I carefully moved the car up and tried stopping at the light. Brakes functioned normally, so I tried the parking brake and it also seemed to function normally. …
Invalid braking incidents with Subaru Outback's eyesight pre-collision braking system. My car has brake suddenly, without cause on 3 occasions. 1) sunny morning on a crowded residential street going less than 25mph with no cars directly in front of me, car gave warning and immediately braked stopping the car. 2) sunny afternoon on a wide residential street going about 30mph with no cars directly in front of me, car gave warning and immediately braked slowing the car significantly. 3) dark and raining on a major highway going 70mph using adaptive cruise control with no cars around me, car gave warning and immediately applied the brakes hard (no skidding or swerving) slowing the car to about 25mph before releasing control to me. Very fortunate that no cars were behind me. After each incident, I took the car into the dealership. …
Brake complaints in other Outback years
Frequently asked questions
How common are brake problems on the 2015 Subaru Outback?
NHTSA has 28 complaints about the brakes of the 2015 Subaru Outback, 5% of the model year's 510 complaints.
Is there a recall for 2015 Subaru Outback brake problems?
No. NHTSA lists no brakes recall for the 2015 Subaru Outback, though it has 5 recalls for other components. If the problem is widespread, a repair may still be covered by an extended warranty or a manufacturer service bulletin — ask a dealer.
At what mileage do 2015 Subaru Outback brake problems start?
Half of the complaints with a recorded mileage happened before about 42,000 miles, and 26% before 25,000 miles.
Is it dangerous?
Owners linked 5 crashes, 0 fires and 3 injuries to brakes problems on this model year. If you notice symptoms, have the car checked before driving further.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.