Most common 2015 Subaru Legacy problems
Share of the 160 complaints; one complaint can involve more than one system. "~" is the median mileage when the problem started.
Subaru Legacy complaints by model year
Best Legacy years: 2023, 2025, 2021. Years to avoid: 2015, 2016, 2011, 2020, 2019. Compare all years →
2015 Subaru Legacy recalls (3)
Electronic stability control (ESC)
Subaru of America, Inc. (Subaru) is recalling certain model year 2015 Legacy and Outback vehicles manufactured on July 20, 2015. The brake fluid used in these vehicles may contain excess moisture which may adversely affect the performance of the electronic stability control system.
Remedy: Subaru will notify owners, and dealers will perform an ABS activation, then flush and replace the brake fluid, free of charge. The recall began on May 20, 2016.
Power train › Driveline › Driveshaft
Subaru of America, Inc. (Subaru) is recalling certain 2015 and 2016 model year Subaru Legacy 4-Door and Outback vehicles manufactured July 3, 2015, to July 27, 2015. Transmission oil may leak from a deformed seal cap on the propeller shaft yoke.
Remedy: Subaru will notify owners, and dealers will replace the propeller shaft, free of charge. The recall began on August 28, 2015. Owners may contact 1-800-782-2783. Subaru's number for this recall is WQU-56.
Forward collision avoidance › Crash imminent braking
Subaru of America, Inc. (Subaru) is recalling certain model year 2015 Legacy vehicles manufactured March 10, 2014, to April 16, 2015, Outback vehicles manufactured February 24, 2014, to April 16, 2015, Impreza vehicles manufactured September 9, 2014, to April 14, 2015, XV Crosstrek vehicles manufactured October 16, 2014, to…
Remedy: Subaru will notify owners, and dealers will reprogram the driver assist system, free of charge. The recall began on July 20, 2015. Owners may contact Subaru customer service at 1-800-782-2783.
NHTSA defect investigations
Federal safety investigators have looked into a possible defect involving the 2015 Subaru Legacy:
Desiccated Air Bag Inflator Rupture
From 2000 through 2017, Takata produced millions of air bag inflators using two types of phase-stabilized ammonium nitrate ("PSAN") propellant -- propellant 2004 and propellant 2004L. After prolonged exposure to high temperature cycles and humidity, inflators using propellant 2004 can degrade, causing the propellant to burn too quickly when ignited.
What 2015 Subaru Legacy owners say
Windows, wipers & sunroof all 41 →
The contact owns a 2015 Subaru Legacy. The contact stated that while the vehicle was turned off on two occasions, the contact observed three cracks in the top-middle of the windshield that led to an 'S' shape crack in the middle of the windshield. The vehicle was taken to an auto body and glass shop where it was diagnosed that the lament had pulled away from the glass and the windshield needed to be replaced. The vehicle was repaired but the failure recurred three weeks later. The manufacturer was not notified of the failure. The failure mileage was approximately 76,000.
My windshield cracked when I used the washer fluid. It cracked from the bottom where the VIN number is and continued across the windshield. I went to the Subaru dealer in Portage Indiana, to have it fixed under the extended warranty I received from Subaru for faulty windshields the dealer told me that it cracked in the wrong spot, and would not be covered. The dealer agreed that the windshield crack was not from any type of impact.
Electrical system all 37 →
I am the original owner of the vehicle in question. I have been experiencing excessive electrical drain issues throughout the life of my vehicle. I have had to jump it at least 10 times and have replaced the battery 4 times throughout my 7 years of ownership. This is quite excessive and has caused safety issues in the past as you never know when the battery suddenly no longer has enough power to start the vehicle. My fianc was recently on a ferry and upon landing the vehicle would not start and this caused quite an issue with the ferry operator and resulted in undue stress and anxiety on her. I have also always had an issue with the Adaptive Cruise Control system (EyeSight) in which under what I believe are specific circumstances, the system fails to detect the roadway and road markers in front of the vehicle and abruptly shuts off. …
We have owned two 2015 Subaru Legacy sedans. Both of them have had major battery problems. We've had to have battery tenders (trickle-chargers) installed on both cars, and we're still having battery problems. We've been stuck in various parking lots, unable to start the car, and had to get jumps from others. This is a royal pain, and a potential safety hazard if we are stuck in a remote location. We've been told by our mechanic that this vehicle does not really "turn off" when you shut it down. There are several devices in the car which continue to have a "parasitic draw" on the battery, which it is not capable of sustaining. We've had the battery and charging system checked out multiple times, and everything checks out fine. Replacing the battery will NOT solve the problem. Replacing the battery with a deep-cycle battery will NOT solve the problem. …
Engine & cooling all 24 →
The contact owns a 2015 Subaru Legacy. The contact stated that while the vehicle was at the dealer for service, he was informed that the front exhaust pipe was fractured. The dealer diagnosed that the front exhaust pipe needed to be replaced. The vehicle was not repaired. The contact stated that the front exhaust pipe was previously replaced under Subaru Campaign Number: WUJ-95 due to the failure; however, the failure persisted. The manufacturer was notified of the failure. The failure mileage was 140,000.
I am reporting a Sudden Unintended Deceleration event in my Subaru. The vehicle grinded to a halt without driver input. The car stopped in the left lane of a major highway. We put on our hazards and called the state police for help. They were unable to get to us in time. We were hit from the rear. The car's failure created a stationary hazard that led to a high-speed rear-end collision by a Jeep and truck which caused the car to do a 360-degree spin.
2015 Subaru Legacy engines & fuel economy
| Engine | Transmission | Drive | MPG city / hwy / combined |
|---|---|---|---|
| 2.5L 4-cyl | CVT | AWD | 26 / 35 / 29 |
| 3.6L 6-cyl | CVT | AWD | 20 / 28 / 23 |
EPA ratings. Class: Midsize car.
Frequently asked questions
Is the 2015 Subaru Legacy a good car?
Based on 160 owner complaints filed with NHTSA, the 2015 Legacy rates avoid: 2.0× as many complaints as a typical year of the Legacy at the same age. It is one of the Legacy years we suggest avoiding. Complaint counts don't account for sales volume or individual maintenance, so have any used car inspected before buying.
What is the most common problem with the 2015 Subaru Legacy?
The windows, wipers & sunroof — 41 complaints, 26% of all complaints for this model year, most often about windshield. Next are the electrical system (37) and engine & cooling (24).
How many recalls does the 2015 Subaru Legacy have?
There are 3 recalls for the 2015 Subaru Legacy, the most recent from April 27, 2016 (electronic stability control (esc)). Recall repairs are free at any authorized dealer — check whether yours has been done with the VIN recall check.
What are the best and worst years of the Subaru Legacy?
The best years by complaints, compared at the same age, are 2023, 2025 and 2021. Years to avoid or approach with caution: 2015, 2016, 2011, 2020 and 2019. See the full Subaru Legacy years comparison.
At what mileage do 2015 Subaru Legacy problems happen?
The median mileage reported in complaints is about 17,000 miles; 76% of problems with a recorded mileage started before 50,000 miles.
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.