Which parts fail
Components named in complaints (automatic and manual transmissions, CVT, axles, driveshaft, 4WD/AWD).
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 owned a 2017 Subaru Outback. The contact stated while reversing, the vehicle accelerated backward. The contact pumped the brake pedal and was depressed aggressively several times however the brakes failed to respond. The vehicle collided with a pillar of bricks causing the vehicle to stop. No airbag deployed and no one was injured. A police report was filed. The vehicle was towed to a collision center where the insurance deemed the vehicle a total loss. The manufacturer was contacted and a complaint was filed. The failure mileage was 41,806.
The contact owns a 2017 Subaru Outback. The contact stated while driving approximately 55 MPH, the vehicle unintendedly accelerated towards a truck in front. The contact used excessive force to depress the brake pedal to stop the vehicle. The contact stated that the braking distance was extended due to the failure. Additionally, there was an abnormal thumping sound heard while the vehicle was coming to an abrupt stop. The contact pulled to the side of the road and inspected the vehicle but found no cause for the failure. After waiting momentarily, the contact proceeded to drive, and the vehicle operated as needed. The vehicle had been taken to the dealer but was not diagnosed. The vehicle had not been repaired. The manufacturer was not made aware of the failure. The approximate failure mileage was 32,000.
The contact owns a 2017 Subaru Outback. The contact stated that the electric parking brake was stuck intermittently. The contact stated while shifting to drive(D) or reverse(R), the vehicle failed to respond. The contact stated that failure occurred after reversing several times. The message "Park" was displayed. The contact stated that upon jiggling the electric parking brake knob several times, the vehicle responded as needed. The vehicle was taken the dealer, where the failure could not be duplicated. The Subaru dealer was contacted and advised the contact to tow the vehicle to their location for a diagnostic test. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 24,000.
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. …
System does not recognize the car is in park mode correctly. The side effect of this is ignition key gets locked in the key hole and cannot be pulled out. Repeated problem in all weather situation once the failure started to show symptom. This issue is common enough across multiple product line of Subaru vehicles with a service bulletin reference 16-112-18R with google search. Plenty of website postings and you tube videos showed different work around to resolve the issue. Dealer charges parts and labor cost to repair each vehicle request for service that could possible is a design or sensor defect issue from production quality issue. The trigger point of my vehicle having this problem could be due to recent cold weather, but this issue does not go away even after the temperature gets warmer. …
My car had it's third transmission installed in October 2021 at 42,730 miles. The car currently has just under 52,000 miles. The current transmission is exhibiting symptoms of slipping and delayed gear engagement. The slipping is most concerning due to the unpredictable and non-linear acceleration when I press the accelerator. I don't know if a light accelerator application will give the expected acceleration or a 1-2 second delay followed by either weaker than expected acceleration or a surge in engine RPMs (up to 3,000 at times) with significantly more acceleration than expected. I also don't know if the acceleration will decrease or increase if I keep the accelerator position the same. This is especially problematic in stop and go city driving where light on/off pedal application is required. The more I'm on/off the accelerator, the less predictable the acceleration becomes. …
It was a few days ago, the vehicle suddenly have shuttering or sputtering type of noise when accelerating from a stop. During the drive, I also started to hear a creaking type of noise. This became worse when accelerating uphill. I took the car to a Subaru dealership, and the service technician reproduced these problems. He then detected an transmission related error code P0841. He replaced the sensor related to this error code, but found he couldn't get rid of the initial problems. In fact, when he checked the error code, P0841 came back again. Check Engine light come out during his examination. Even he could get rid of the warning, Check Engine light came back when I drove the vehicle back home. The technician found internal transmission failure and recommended to replace transmission assembly. The cost quoted at $10996, so no further repairs was made. …
The CVT failed at 62 miles per hour on a busy interstate, [redacted]. This caused the drivetrain to lock. The car has been repaired and traded locally in [redacted]. The car was very difficult to steer with locked wheels in traffic. This was a rapid evasive manuver on a busy interstate. An undrivable vehicle on an interstate is life threatening to many. Flat bed driver told me I was lucky to steer off of lanes onto shoulder with four locked wheels. This incident put me in mild shock. The Subaru dealer had to replace the transmission. The dealer and Subaru Regional Rep. examined the CVT failure. It was outside of the 100,000-mile warranty by about 895 miles. Repair invoice attached. I did not have advanced warning of CVT failure. There were no warning lights on before the CVT failure.
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.
Unable to remove key from ignition when vehicle placed in 'Park' and vehicle easily changes to 'Reverse' when unable to remove key, potential safety hazard to driver and anyone standing behind vehicle. Started around 40,000 miles, repair facility thought replacing the key cylinder would fix the problem but it recurred in less than 1,000 additional miles. Subaru Forums cite many, many owners with the same issue on multiple vehicle types resulting in replacement of the shifter mechanism due to a malfunctioning 'Park' sensor.
Transmission complaints in other Outback years
Frequently asked questions
How common are transmission problems on the 2017 Subaru Outback?
NHTSA has 47 complaints about the transmission & drivetrain of the 2017 Subaru Outback, 5% of the model year's 919 complaints. The component named most often is automatic transmission › gear position indication (prndl) (1 mentions).
Is there a recall for 2017 Subaru Outback transmission problems?
No. NHTSA lists no transmission & drivetrain 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 transmission problems start?
Half of the complaints with a recorded mileage happened before about 30,000 miles, and 50% before 25,000 miles.
Is it dangerous?
Owners linked 2 crashes, 0 fires and 0 injuries to transmission & drivetrain 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.