10.0

really awful
Crashes / Fires:
1 / 2
Injuries / Deaths:
2 / 0
Average Mileage:
30,195 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2015 Subaru Outback engine problems

engine problem

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2015 Subaru Outback Owner Comments (Page 1 of 3)

problem #43

Jun 072023

Outback

  • miles

A D V E R T I S E M E N T S

#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. The technician (who previously was employed by a local Subaru dealership) noticed that the engine was leaking oil and diagnosed the timing cover gasket was leaking oil. Oil leaking would contribute to the bad smells entering the passenger compartment. The gasket and three seals were replaced at a cost of $1329.94 plus 8% tax. Online research reveals that Subaru"s boxer engine suffers chronic oil consumption and seal problems. Subaru of America relies on the consumer to eat any repairs rather than fix the problem that has been going on for years.

- North Tonawanda, NY, USA

problem #42

Jun 192023

Outback

  • 80,700 miles
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.

- Los Angeles, CA, USA

problem #41

Jan 152021

Outback

  • miles
Oil consumption issues. The oil is burning more then it should. Oil light would come after 2 to 3 more after an oil change. The dealership has been notified and is working on ordering new parts for the engine. Replacing the small block of the engine. Had less the 100k miles when this problem accured. Electrical issues. The battery is being drained after the car is turned off. Car would not start in the morning and need to be jumped. Additionally, battery eventually dies and needs to be replaced. Dealership has been notified.

- Matthew , NC, USA

problem #40

Sep 192022

Outback

  • miles

A D V E R T I S E M E N T S

Intermittant engine acceleration or engine surge while braking at very low speeds.

- Hatley , WI, USA

problem #39

Sep 062022

Outback

  • miles
Entering a residential garage to park; experienced sudden acceleration while braking. Vehicle went through drywall/wall about 2 feet. Placed vehicle in park to stop vehicle. No airbags went off. Driving vehicle to repair shop later; experienced same rapid unexpected acceleration with different driver. No issue with floor mats. OEM mats. Service center cannot provide any insight or reproduction of event.

- West Fargo, ND, USA

problem #38

May 112021

Outback

  • 120,000 miles
The contact owned a 2015 Subaru Outback. The contact stated that while driving at 60 MPH, he was alerted by another driver that the vehicle was smoking and flames were coming from under the vehicle. The contact stated that warning lights flashed off and on. The contact stated that he pulled over, exited the vehicle, and saw flames coming from underneath the vehicle before it was engulfed in flames and exploded. The contact stated that he sustained minor burns on his hands from the steering wheel however, medical attention was not required. The fire was extinguished by the fire department. A fire department report was filed. The vehicle was towed to a junkyard as it was deemed a total loss. The manufacturer was notified of the failure and a field technician was sent to retrieve information from the EDR. The contact was not aware of the diagnosis. The approximate failure mileage was 120,000.

- Oakland, CA, USA

problem #37

Jan 062022

Outback

  • miles

A D V E R T I S E M E N T S

On three separate occasions, most recently on 01/06/22, my Subaru Outback began to accelerate without touching the gas pedal. My wife and myself were both fortunate to have a foot covering the brake pedal when this occurred. We fortunately avoided the potential collision hazard. The UNEXPECTED ACCELERATION is alarming and continues to occur !

- Penn Yan, NY, USA

problem #36

Dec 182021

Outback

  • miles
Engine consistently burns oil. Adding pints between factory recommended oil change interval when low oil light comes on. On average, one pint is burned every 1500 miles.

- Old Town, ME, USA

problem #35

May 112016

Outback

  • miles
Repeated dead batteries. Replaced OEM battery in year 2, new battery also comes up dead regularly. There is clearly a parasitic battery drain happening. Burning oil, this car burns more oil than any car I have ever owned. Subaru claims it is within specification, but their specification is 1 quart between changes, this is a ridiculous claim in 2021. Heat shield and exhaust noise. Always a new noise or exhaust leak. Lights are not adequate for country driving, it is dangerous.

- Fennville, MI, USA

problem #34

Apr 282021

Outback

  • miles
While driving at highway speed and traveling over about 6 hours, the car simply shut off. We were traveling on the highway in the passing lane. Without warning the car began to slow down rapidly, no dash lights on, but the engine was off. We managed to cross two lanes of traffic without power assist and once on the shoulder and slowing down, the engine lights all came on. Once fully stopped, we turned the car off, waited a few seconds and restarted. We were then able to complete our trip without difficulty. This has happened twice. The dealer has done full diagnostics twice but has been unable to find the problem. We have heard that other year Subaru outbacks have been recalled for this problem but our year isn't included.

- Chicago, IL, USA

problem #33

Aug 252021

Outback

  • miles

A D V E R T I S E M E N T S

On 8/25/21, during servicing, I was informed by the Subaru dealer who has always serviced my car that the driver's side head gasket was starting to go bad. The car had 54,108 miles on it and was 6 years and 5 months old. It had always been driven under normal conditions, on public roads, and 100% of the servicing had been performed by the Subaru dealer who sold me the car, which I bought new. In addition, I had never used the car for towing. Under the circumstances, it seemed indefensible that the head gasket should be going bad. It's a very expensive repair. The engine in question is the 3.6-liter 6-cylinder.

- Leonia, NJ, USA

problem #32

Jul 062021

Outback 4-cyl

  • miles
Car stalled, could not take out of gear; could not restart, could not set emergency brake, couldn-€™t turn key to restart. Finally a light came on that said hatch was open. Could not operate hatch from inside car. Jumped out hatch was closed. Opened and reclosed. Car started rolling. Ran to jump in and apply manual brake. I-€™m 85 years old. Very dangerous situation. Consumer stated AAA batteries failed several times. Vehicle was taken to a dealer for electrical failure.

- Oceanside, CA, USA

problem #31

Feb 032021

Outback

  • miles
My battery has had to be replaced twice because it drains even though the car is used regularly and nothing is left on. I have had to be jumped six or seven times since I purchased the car and towed once to the dealership.

- Springfield, VA, USA

problem #30

Feb 272021

Outback

  • 82,500 miles
Within 80K miles the car has started showing high engine oil consumption. Engine oil is to be changed every 6000 miles but at 4000 miles low engine oil light will show up and checking on oil level, it shows at the low level of dipdtick.upon diagnosis, it was figured that it has stage 2 head gasket replacement by Subaru dealership

- Bentonville, AR, USA

problem #29

Mar 112021

Outback

  • 70,000 miles
The muffler makes a rattling or growling noise when idling or coasting. The noise disappears when accelerating.

- Seattle, WA, USA

problem #28

Feb 012021

Outback

  • 80,000 miles
I have this issue with my muffler. Tsb 09-66-16 rear muffler shell rigidity enhancement this bulletin announces a change in the production procedure for the rear muffler assembly. Spot-weld locations securing the outer shell portion have been changed to improve overall rigidity. A gap may develop at the spot welded seam as a result of repeated thermal shock (heating / cooling) which occurs during normal use. The gap does not create an exhaust leak. In some cases, a rattling sound from the muffler may develop.

- Rochester Hills, MI, USA

problem #27

Oct 052020

Outback

  • 38,000 miles
Vehicle will not start/crank. Battery is brand new, all electronics function and light up, yet when ignition is turned the engine doesn't turn over. Vehicle is in the shop for the third time in 3 weeks. A new wiring harness was installed but failed to resolve the issue. Vehicle has been showing codes for the cam & crank sensors, including code P0340, yet all sensors have tested as operational. I'll post an update as soon as I hear from dealer.

- Portland, OR, USA

problem #26

Aug 112020

Outback

  • 92,000 miles
Service technician reported a noise and leak from catalytic system. Hint of exhaust present in driver compartment at low speed and stops.

- Mosinee, WI, USA

problem #25

Aug 112020

Outback

  • 2 miles
I was going 55 mph on a straight flat surface when all of a sudden the RPM's shot up to around 4000 but the car was not accelerating. It was like it went into neutral. I pulled over to the side of the road and the car proceeded to die. Fortunately, it started right up and I drove home. I had a almost a full tank of gas. I had only driven it for 5 minutes as I was on my way home from work. I just had the oil/filter changed not even 2 months ago. I have 54,000 dealer serviced miles on the car. It was 86 degrees out. 2015 Subaru Outback premium 2.5

- East Peoria, IL, USA

problem #24

Dec 172019

Outback

  • 90,000 miles
Noted over a period of several weeks, an increase in exhaust noise from the front of the car. The cabin would fill with exhaust fumes when stopped with the engine running. I took the car to the dealer twice to have the issue diagnosed and both times they indicated that no issue was found. On the third trip, they confirmed a hole in the exhaust manifold and initially refused to replace it under warranty, even though the vehicle was covered under the pzev emissions warranty and extended vehicle coverage. After pointing out the pzev coverage, the dealer replaced the manifold.

- Severna Park, MD, USA

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