Which parts fail
Components named in complaints (battery, alternator, wiring, ignition, instrument cluster, infotainment).
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 that while attempting to start the vehicle, the vehicle failed to start. The contact attempted to jump start the battery with a battery charger however, the failure persisted. The contact stated that the battery would drain periodically. The contact stated that the battery had been replaced four times in a six-year period. The local dealer was made aware of the failure but informed the contact that the next available appointment was on the 29th of May. The contact replaced the battery himself. The manufacturer was made aware of the failure. The failure mileage was 47,784.
The contact owns a 2015 Subaru Outback. The contact stated that the vehicle was experiencing intermittent horn failure, and the failure mostly occurred while driving straight with limited steering input. The horn was operable while turning the steering wheel. Upon investigating the failure online, the contact learned that it was a common failure. The vehicle was not diagnosed or repaired by an independent mechanic or the dealer. The manufacturer was contacted, and the contact was awaiting a call back. The failure mileage was approximately 192,000.
The contact owns a 2015 Subaru Outback. The contact stated that the vehicle was experiencing frequent battery failure. The contact stated before the battery failed, the check battery warning light was illuminated. The contact had replaced the battery three times within five years. The contact had not taken the vehicle to the local dealer. The vehicle was not diagnosed or repaired. The manufacturer had not been informed of the failure. The failure mileage was approximately 14,739.
Odometer Fraud. The contact stated that he recently purchased a 2015 Subaru Outback. The vehicle was purchased through a private sale. At the time of purchase the odometer reading was 91,000. The contact stated while obtaining insurance was informed the mileage was 194,000. A Carfax report was not obtained. There was no other agency contacted.
The contact owns a 2015 Subaru Outback. The contact stated that the horn was completely inoperative. The dealer was not notified the failure. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 126,000.
#1. I replaced the battery in June of 2022 after all the dash warning lights came on. My eyesight safety feature was rendered in operative. After the battery was replaced, all the warning lights eventually went out. In July of 2023 the same scenario happened again. I returned to Advance Auto retailer and the store manager checked the battery. She replaced the battery with a new one of greater cold cranking amps. she was most knowledgeable and extraordinarily gracious. I asked her to check the alternator for proper function and was told it was functioning as it should. #2. On June 07, 2023, I took the automobile in for service: oil and filter change and brake pads and rotors on all four wheels. My Subaru had 68,482 miles on this date. …
There's a problem in a part called (clock spring/roll connector) that is responsible for the horn on steering wheel. It affects almost all Subaru models, like Outback, Forester, Legacy... I've verified it in a mechanic shop, and after all the tests of fuses, horn, and everything. They say the problem is the clock spring, a part that goes after the air bag and costs around $130 plus service ($150 minimum) to change. Then I research on internet and found out it's a very common problem with a lot of videos on YouTube of people having the same issue and a lot of comments there of more people complaining about it that it should have a recall cause it's a security part. I couldn't use my horn when another driver almost hit me, that's how I figured out that my horn died. Those are just some of the videos with this related problem. …
The clock spring (steering roll connector) component has failed, confirmed by the resulting complete loss of the horn function. SAFETY HAZARD: The component failure has resulted in the loss of the electrical connection to the Driver's Airbag System, rendering the primary airbag inoperable. This creates an unreasonable, life-threatening risk in the event of a collision. The problem has been diagnosed based on common failure patterns for this vehicle platform and confirmed via manufacturer correspondence. The problem first occurred on or about [Input Approximate Date] with the simultaneous failure of the horn and subsequent inoperability of the driver's airbag. …
On multiple occassions, I have been unable to start my Outback b/c the battery is dead. Note that I have not left any lights on, doors open etc. and, when I have taken my car in for routine services, the battery is deemed to be in proper working condition. In addition to being extremely inconvenient when I cannot use my car as needed, this is a safety issue. What if I was not in a safe location when my car wouldn't start? What if I needed to use my car to get a pet to urgent medical care? When I purchased my Outback, I was confident in the Subaru brand for reliability. However, it no longer consider my Outback, or Subaru as a brand, reliable when I can't count on my car starting when I need it to. The date I provided in the additional details of this form is just the latest incident. I purchased this car in 2015 and my battery has been drained more than 5 times.
Yesterday, my car would not start due to a dead battery. This happened last week, as well. Both times, my husband used a battery charger to enable me to start my car. I have had this issue multiple times in the past, as well, and previously replaced the battery in 2022. I am also aware of a previous class action lawsuit, and several customer complaints about parasitic drain and poor battery performance in the 2015 Subaru Outbacks. Continuing to replace the battery is not only costly and bad for the environment, it doesn't solve the problem. There is some flaw in the electrical design of this car and Subaru needs to address the root cause. I am very concerned that I am going to be stranded somewhere in unsafe conditions, or not have my car available to me when I need to get to a critical appointment or respond to an emergency. This is unacceptable.
Electrical complaints in other Outback years
Frequently asked questions
How common are electrical problems on the 2015 Subaru Outback?
NHTSA has 127 complaints about the electrical system of the 2015 Subaru Outback, 25% of the model year's 510 complaints. The component named most often is 12v/24v/48v battery (2 mentions).
Is there a recall for 2015 Subaru Outback electrical problems?
No. NHTSA lists no electrical system 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 electrical problems start?
Half of the complaints with a recorded mileage happened before about 30,000 miles, and 42% before 25,000 miles.
Is it dangerous?
Owners linked 0 crashes, 3 fires and 0 injuries to electrical system 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.