Mileage when the problem started
Owner reports
Selected complaints filed with NHTSA by 2017 Subaru Outback owners, lightly cleaned up (personal details are redacted by NHTSA).
The contact owns a 2017 Subaru Outback. The contact stated while driving at various speeds, the vehicle lost motive power and stalled without warning. After restarting the vehicle, the vehicle operated as designed. The contact stated that the failure had occurred on several occasions. The vehicle was taken to the local dealer would was unable to retrieve a diagnostic code. No failure was found. The manufacturer was notified of the failure and advised that the vehicle be taken to a different dealer. The failure mileage was 25,000.
The contact owns a 2017 Subaru Outback. The contact stated that the windshield cracked on the upper driver's side windshield and extended to the center of the windshield. There was no impact to the windshield to cause the crack. The contact had not informed a dealer of the failure. The windshield had not been replaced. The manufacturer was not made aware of the failure. The approximate failure mileage was 76,062.
I purchased a used 2017 Subaru Outback in December 2020 from a friend whose mother had owned the car before her death in Nov. 2019. That owner purchased it used from dealer in Sevierville TN in 2019 and had to replace a battery at least once according to records. The battery has failed three times since Dec. 2020, totally drained and would not recharge so a replacement was needed. I replaced the first battery then took it to dealer for other two replacements. The previous owner had a garage under her mountain house. She was found dead in her den chair. After her burial the family later found the 2017 Subaru Outback parked in her garage underneath the house was totally empty of gas. I believe from reading issues other Subaru owners have had that this car did not turn off and this lady died from carbon monoxcide poisoning. …
I drive 2.5miles to work, Tuesday [redacted], I was turning into the parking lot and my car just cut off. I couldn't use flashers, restart it, put it in park or anything else. I called my husband to come help. I thought maybe the battery cable might have come loose. It was dead. I couldn't get out, if I let my foot off the brake it would roll backwards, going into the road and I didn't want it to hurt anyone. It started smoking from the drivers front side of engine. I called my husband back and said please hurry. It took approximately 7 minutes for him to arrive. I was on the phone about the smoke when he drove up behind me. He told me to get out of the car it's on fire. He tapped my bumper to keep my car from rolling backwards. I jumped out, called 911.He had sandbags in the back of his truck. He put them under the back tires so it couldn't roll into the traffic. …
Bought this car after having oil consumption issues with another outback Bought from another dealer that wasn't care for properly. Within 6 months of have this new one from an actual subaru dealership started to have oil consumption issues as well. Have gone through many of their "test" and pass. But within 2200 miles of 5k on an oil change I'm down over a qt. My mechanic has gone over the car and no leaks and states it is burning oil at a high rate. Paperwork from subarus test states as have their techs stated they put 6.1 qts in. The manual and my mechanic both state and put in 5.1qts. I have to put at least 1 qt in between oil changes and have to always have oil in the car so I don't get caught without oil to put in. I do know there is a lawsuit for this issue on 2016 models. My car was also placed on the road 12/2016. …
Throttle fails to respond for a brief but serious amount of time. When pulling into traffic, instead of accelerating the engine remains at an idle and the car moves forward slowly. I push on the throttle trying to make it go. Then it takes hold and the car leaps forward. Safety: Normal power is delayed as the car moves into traffic. Oncoming traffic must slow to prevent an accident. The dealer where I purchased the car, Santa Monica, CA, tried to find error codes. Also removed the throttle valve to check that it wasn't somehow stuck. They drove the car briefly. They say they've done all they can. No warning lamps, messages, codes stored in the computer. Note that the throttle pedal signals the computer to work the engine throttle valve (so I'm told). Problem occurs about once a month. First time was when I took posession at the dealer's. …
Vehicle lost engine power twice while on the road between 8/12/23 and ~9/25/23. Took to Subaru Santa Monica service on 9/26, left it overnight, and was unable to replicate the problem. I cleaned the K&N drop in filter after 8/12 incident since I haven't cleaned it in a while. Subaru Santa Monica service said that there's oil contamination from the filter into throttle body and I need cleaning and new air box. I don't think that's the problem and this is a major safety issue. Although I have a 7 year warranty that's still active, I paid $219 for diagnostic. Not covered under warranty because can't replicate issue. My plan is to sell this car as it's a personal and public safety danger. Don't have time to keep going to the dealer and paying out of pocket.
Car was being driven on the highway in cruise control, when the cruise control turned off and the car began to decelerate. When the gas pedal was pressed, the RPMs shot up but there was no acceleration. The car was pulled over, turned off, and we were not able to turn it on again. The car was towed to a shop, where they were able to identify the engine wasn't working but not the root cause, and also mentioned the possibility of there being a transmission problem. We then brought it to a Subaru dealer, and they said a similar thing without being able to diagnose anything more specific. This car is 8 years old and has had routine, consistent maintenance the entire time. The surprise of an engine failure with no warning is very alarming and dangerous.
I drove my Outback for 10 minutes. I stopped to run an errand that took 30 minutes. I then tried to start the car and it wouldn't start. All the lights on the dash turned on. I then tried several more times. It still would not start. Then I waited several minutes and it started. I drove it home. I have since tried to start it several times and it has started. The car has slightly less than 20K miles on it. This has never happened before. It was a very hot day - nearly 100 degrees and I was quite panicky that it would not start. I was worried I would be stranded. There was never any indication before that something like this might happen. I am going to call the dealership tomorrow.
My Subaru Outback developed a strong smell of exhaust in the cabin last year. We finally had a chance to get it fixed in January, and it turned out the catalytic converter manifold had rusted through. The car is not that old, and is driven primarily in central North Carolina where road salt is not a major concern. An internet search reveals many other drivers with the same issue - metal corrosion at the "accordion" part of the exhaust pipe. I have no idea how much engine exhaust my family and I were exposed to, but it was significant enough to cause headaches and exhaustion.
Engine complaints in other Outback years
Frequently asked questions
How common are engine problems on the 2017 Subaru Outback?
NHTSA has 44 complaints about the engine & cooling of the 2017 Subaru Outback, 5% of the model year's 919 complaints.
Is there a recall for 2017 Subaru Outback engine problems?
No. NHTSA lists no engine & cooling recall for the 2017 Subaru Outback, though it has 4 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 2017 Subaru Outback engine problems start?
Half of the complaints with a recorded mileage happened before about 32,000 miles, and 38% before 25,000 miles.
Is it dangerous?
Owners linked 1 crash, 1 fire and 0 injuries to engine & cooling 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.