2015 Subaru Forester transmission problems

POWER TRAIN

The contact's spouse owns a 2015 Subaru Forester. The contact stated that while driving from a complete stop or at various speeds on several occasions, the vehicle hesitated and failed to accelerate as intended. The Hill Assist and Automatic Transmission Oil Temperature warning lights flashed, and the ABS, Traction Control, and VDC warning lights illuminated. The vehicle was steered to the side of the road and turned off to cool down on each occurrence. After approximately 45 minutes, the vehicle was restarted and was driven to the residence. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 108,000.

NHTSA complaint #11748724 — an unverified report by a vehicle owner.

POWER TRAIN

I was pulling into a parking spot almost stopped when the vehicle suddenly surged forward. I slammed on the brake and put the car in reverse since it had driven upon the walkway. This happened earlier today and I plan to have it checked out as soon as possible . Never have had this problem before, no warning lights or messages.

NHTSA complaint #11735015 — an unverified report by a vehicle owner.

POWER TRAIN

Vehicle: 2015 Subaru Forester Mileage at Failure: 85,000 miles Component: Powertrain – CVT Transmission My 2015 Subaru Forester is experiencing a premature safety‑related CVT transmission failure at approximately 85,000 miles. The vehicle developed a pronounced whining noise that increases with vehicle speed, consistent with internal CVT bearing or pulley failure. This is a known defect pattern in Subaru Forester CVTs and is not related to maintenance or wear. The noise is continually progressing and the risk of sudden catastrophic failure makes the vehicle unsafe to operate. An authorized Subaru dealer and the District Parts & Service Manager (DPSM) both confirmed that the CVT has failed and requires full replacement. This failure occurred well within Subaru’s extended CVT warranty mileage limit of 100,000 miles, and matches the defect pattern Subaru acknowledged when it extended CVT coverage nationwide for this model. However, Subaru is refusing to replace the CVT due to the 10 calendar year extension expiration. Subaru’s maintenance schedule for this vehicle does not require any CVT fluid replacement interval, so there is no missed maintenance that contributed to the failure. A failing CVT creates a safety hazard due to to the risk of sudden loss of power, hesitation, or inability to accelerate. I am filing this complaint so NHTSA is aware of this premature CVT failure and the associated safety concerns of SOA's refusal to replace the CVT under their extended warranty.

NHTSA complaint #11728666 — an unverified report by a vehicle owner.

POWER TRAIN

I bought a used 2015 subaru forester with 117,000 miles from an auto shop/used car dealer in March of 2024. In September of 2025, 11,000 miles of driving later, a bunch of lights came on my dash. Check engine, traction control, ABS, at oil temp, and incline assist. I took it to Autozone to get the codes read and the part it suggested was the transmission oil pressure sensor. I then took it to a trusted mechanic who said they weren’t able to get the lights to turn back on and told me to come back when the lights reappeared. In December of 2025, the lights came on and they were on long enough to take it back to the mechanic. The mechanic told me that it looked to be the transmission valve body and recommended a local transmission shop. I took it there and the mechanic told me there was a speed sensor that was failing and the transmission and valve body would need to be replaced. He said that they don’t sell the speed sensor anywhere and it is impossible to obtain. I got quoted 9,100 to fix my car (I originally paid around 8,500 for it). I was told it would not be worth my time or money to fix the transmission. The transmission guy told me that Subaru cvt transmissions are horrendous and to take this is a lesson to never buy a Subaru. I heeded to this advice and traded her in for $2000 towards a 2010 rav4. Additional info: It had a rebuilt title and had been in an accident before I got it. Lived its entire life between kentucky and tennessee. I replaced the engine oil and filter every 4,000-6,000 miles. Tire treads were very mismatched for the time I had it (almost two years) which I was told by a subaru dealership can damage the transmission. Back tires had significantly lower tread than front. I had front left lower control arm, rear spring coils, brake switch lamp, and one of the battery terminals replaced during the time I had it. My TPMS light was always on. My front right headlight went out frequently. My brake light assembly also broke and wasn’t worth fixing

NHTSA complaint #11713143 — an unverified report by a vehicle owner.

POWER TRAIN

REPORT OF FAILED RECALL REMEDY (RECALL 19V-149 / WUE-90) My 2015 Subaru Forester experienced a total recurrence of the defect addressed in 2019. The vehicle became trapped in 'Park' intermittently on several occasions before remaining immobilized. During one incident, the manual shift-lock override failed to function. While the brake lights functioned during these incidents, the failure to shift is a documented symptom of a failing brake light switch. I had the switch replaced by a technician who initially suggested a full shifter assembly replacement. However, replacing ONLY the brake light switch immediately and permanently resolved the issue. This confirms the recall-related part was the point of failure. Subaru of America was notified but declined to acknowledge this as a failure of the safety remedy. I am also reporting intermittent 'ghost' activations of the right turn signal stalk.

NHTSA complaint #11708987 — an unverified report by a vehicle owner.

POWER TRAIN

Sounds like the differential in the transmission is making a horrendous noise

NHTSA complaint #11675765 — an unverified report by a vehicle owner.

POWER TRAIN

The Vehicle was sold to me by a local dealership not SUBARU Manufacturer themselves with the conditions marked above and more, the wheels when purchased as i turned any corners it would sound like the underside of the vehicle would explode even when driving straight it was just less frequent and caused the ABS system to activate and would pull one way or another. the Transmission has never been inspected by the dealership that sold it to me and the manufacturer seal was broken so it had leaked and caused major lack of power resulting in many close calls due to lose of forward propulsion it is a closed transmission without a dip stick and the dealership refused to do anything about it. the Airbag system has never worked at all and the dealership knew this and same with the Reverse hazard warning detection system or the TPMS and again i was told that i just needed to drive it and it would work itself out by the owner of the dealership who test drove it 3 times and refused to do anything about the obvious issues and now it has been a little over a year i’m in debt and basically out of a vehicle and can man as well as personal money sunk into this vehicle that I would consider beyond a lemon

NHTSA complaint #11638241 — an unverified report by a vehicle owner.

POWER TRAIN

My clutch fork was nearly broken in two.(pics available). I asked the mechanic to save the old parts. My 6MT was never modified; the vehicle was neither raced, taken off-road nor used for towing. A friend discovered the following article online: [XXX] Based on said article , I believe the part on my vehicle was defective. How may other manual transmission Subarus have been affected by this defect ? INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA complaint #11620007 — an unverified report by a vehicle owner.

POWER TRAIN

Both Rear Wheel bearings failed and required replacement at 65,000 miles. Apparently this is a common issue as a TSB was issued and a new backer plate was installed as water is getting into the bearings (design issue)

NHTSA complaint #11533929 — an unverified report by a vehicle owner.

POWER TRAIN

The contact owns a 2015 Subaru Forester. The contact stated while driving 40 MPH, the vehicle accelerated at high speed and stability, the traction control, the check engine, and the cruise control warning light illuminated, and the vehicle would not accelerate. The contact turned off and restarted the vehicle and the vehicle operated normally. The vehicle was taken to the dealer, but no failure was found. The contact stated that the failure reoccurred. The vehicle was taken to the dealer and the transmission module was updated, but the failure reoccurred. The vehicle was taken to the dealer and the throttle pedal assembly was replaced multiple times, but the failure persisted. The manufacturer was contacted, and a case was filed. The failure mileage was 73,600.

NHTSA complaint #11527981 — an unverified report by a vehicle owner.

POWER TRAIN

Transmission faiure at 112,000 miles

NHTSA complaint #11522018 — an unverified report by a vehicle owner.

POWER TRAIN

The contact owns a 2015 Subaru Forester. The contact stated that while driving at high speeds, the vehicle made abnormal grinding sounds. Additionally, the vehicle was vibrating while turning the steering wheel. The vehicle was taken to the dealer, where it was diagnosed with a faulty bearing. The bearing was replaced; however, the failure recurred while driving approximately 70-75 MPH. The vehicle was then taken to Farrish Subaru (10407 Fairfax Blvd, Fairfax, VA 22030) where it was diagnosed that all four bushings needed to be replaced. The dealer replaced the four bushings. The manufacturer was not made aware of the failure. The failure mileage was approximately 71,545.

NHTSA complaint #11511217 — an unverified report by a vehicle owner.

POWER TRAIN

We were driving at 75 mph in the left lane when our car suddenly dropped in speed to 40 mph as though the transmission had dropped into neutral. There were no warning lights or any indication about what was happening. We were in heavy traffic, with trucks and car hitting their brakes. This could have caused a very serious accident. We managed to move our car to the right shoulder. The car's transmission re-engaged and we picked up our speed. This happened 3 times in the space of a few hundred miles while we were on a road trip. I called Subaru. They had no idea what it was. We went to the nearest Subaru dealer and they ran a diagnostic test, even including a 12 mile test drive with the computer hooked up. Nothing showed up. They told us to continue our trip. Then it happened 2 more times! The last time, again, in the left lane, on cruise. The engine rpm clocked up at 7500 rpm before I was able to get the car off the road. The engine died and we had to be towed to a shop. Again, no warning dash lights. This is a serious flaw and very dangerous.

NHTSA complaint #11510749 — an unverified report by a vehicle owner.

POWER TRAIN

APRIL 2022 MY CAR STARTED TO MAKE NOISES WHEN ACCELARATING. I TOOK IT TO SEVERAL MECHANICS WHO COULD NOT DIAGNOSE THE PROBLEM. DEC. 30, 2022 I TOOK IT TO ANOTHER MECHANIC WHO THOUGHT IT MIGHT BE THE BRAKES AND REPLACED THEM. HE THEN TEST DROVE THE VEHICLE AND THE NOISE REMAINED, SO HE STOPPED AT A TRANSMISSION SHOP AND THEY SAID POSSIBLE TRANSMISSION ISSUES, NOT SURE. NO WARNING LIGHT EVER CAME ON. I WAS DRIVING ON DEC. 31, 2022 WHEN THE SOUNDS WERE LOUDER. I TURNED AROUND TO GO HOME AND WAS IN TRAFFIC AND DOWN SHIFTED TO DESCEND A HILL WHEN I DOWNSHIFTED THE CAR STOPPED AND MANY WARNING LIGHTS CAME ON THE DASHBOSRD. I SHIFTED BACK INTO REGULAR GEAR AND THE LEFT LANE WAS AVAILABLE SO I CHANGED LANES AND PULLED IN TO THE MNDOT PARKING LOT WHICH WAS ABOUT 100 FEET AWAY. I SHUT OFF THE VEHICLE AND HAD IT TOWED TO THE SUBARU DEALER. THEY DIAGNOSED THE CAR WITH A BROKEN TRANSMISSION AND THAT SINCE I HAVE A SALVAGE TITLE IT IS NOT COVERED. THE REPAIR COST IS OVER $9000.

NHTSA complaint #11499898 — an unverified report by a vehicle owner.

POWER TRAIN

While driving 45mph on an icy road (approximately 25 degree(F) outside temp) the car suddenly lost power as if the CVT transmission was in neutral. However, it was still in drive. Pressing the accelerator only raised the RPMs but no power was sent to the wheels. There were cars behind me and my car was slowing down due to no power. I was fortunately able to pull off to the side of the road, stop, put in park. I put back into drive, power returned, and car drove normally for the remaining ~10miles of my trip. No warning lights from vehicle occurred during this event. This sudden loss of power could have been very dangerous especially given the road conditions. If drivers behind me were not following at a safe distance the sudden reduction in speed could have caused an accident due to the icy roads. I have not yet taken the car to be inspected, but will do so as soon as possible.

NHTSA complaint #11496398 — an unverified report by a vehicle owner.

POWER TRAIN

My transmission is having issues after being repaired by dealer. It is stalling when I try to accelerate leaving me at risk of being rear ended.

NHTSA complaint #11493724 — an unverified report by a vehicle owner.

POWER TRAIN:MANUAL TRANSMISSION

The contact owns a 2015 Subaru Forester. The contact stated while his wife was driving approximately 55 MPH, the vehicle started shaking abnormally. The contact stated that his wife smelled like the brakes were burning. The contact stated that his wife did not notice any warning lights being illuminated. The driver pulled over and turned off the vehicle; however, the vehicle failed to restart. The contact had the vehicle towed to an independent mechanic. The vehicle was diagnosed, and it was determined that the clutch flywheel had fractured and separated. The mechanic also stated that the clutch plate needed to be replaced. The vehicle was repaired. The manufacturer had been informed of the failure. The failure mileage was approximately 40,300. The consumer stated the flywheel was in two pieces and outer two pieces broke apart, destroying the clutch assembly.

NHTSA complaint #11491303 — an unverified report by a vehicle owner.

POWER TRAIN

Driving in merging four lane traffic 70mph when forward motion stopped due to power loss. Almost wrecked getting to shoulder of road. Stranded in 90+ heat. Vehicle would not crank.

NHTSA complaint #11487360 — an unverified report by a vehicle owner.

POWER TRAIN

With no one sitting in the passage seat the warning light will not turn off unless the seat belt is buckled The CVT transmission is making a high pitch whining sound The dealership informed me the transmission is going out. There is a manufacturer extended warranty for up to 100,000 miles that I have not received. My car started to make the sound at 110,210 miles Subaru was fully aware of the CVT problems and are not being held accountable for the repairs. I have been quoted I’ve $7000 from the dealership for a replacement The CVT is not repairable My car is now unsafe to drive. The CVT transmission can fail and not shift or not stop while braking

NHTSA complaint #11486899 — an unverified report by a vehicle owner.

POWER TRAIN

I was driving with cruise control going around 70 when the car started slowing down suddenly. Not wanting to slow down even more, I turned off the cruise control by hand using the cancel button on the steering wheel (rather than tap the brake) but when I then hit the accelerator, the engine felt like it was in neutral, revving past 6000 rpm on the tachometer. At that point, I realized I had no control over the drive train so I pulled off the road onto the center median of the highway, just as the engine died - fortunately, there wasn’t anyone following close behind. We had been driving for about 1.5 hours with the AC blasting and the gas tank at that point was low, with less than 1/8 remaining. All this happened without any dashboard warning lights turning on. This was the very last leg of a ten-day, 2,000 mile road trip. I tried restarting the engine but only got clicking. Since I thought we’d be struck a while and it was so hot, I turned the key to the accessory position and was able to roll down the windows. We sat there for a couple of minutes wondering what to do. It took another minute to find my AAA card. Before calling for roadside assistance, I tried starting the engine again and this time it turned over. We did not have any further problems in the remaining 100 miles of our trip (though I was very anxious about it happening again). I took the car in to a Subaru service center this morning (36 hours later). They did a multi-point inspection and road test but did not find any issues and were not able to replicate the problem.

NHTSA complaint #11477675 — an unverified report by a vehicle owner.

POWER TRAIN

Car continues to have ongoing lack of response with acceleration. Car was at dealer for 3 weeks for inspection after I was nearly rear ended due to lack of response in acceleration at a stop light, as well as shifting gears. No lights came on to indicate issue, thus the car was returned to me with no repairs. 2 weeks after car obtained from dealer, car again started having issues with acceleration, and pulling into a lot, the AT oil temp light, hill assist, ABS, and check engine light came on. In the 2 prior attempted repair sessions at dealer, the team stated that they were unable to replicate the problem that has been occurring nearly daily for almost 2 months, and stated that they cannot figure it out without any lights coming on. Given the lack of responsiveness to accelerate, my safety is at-risk as well as others, as I am not able to clear traffic as quickly as I should.

NHTSA complaint #11475725 — an unverified report by a vehicle owner.

POWER TRAIN

While attempting to make a left turn the car stalled and lost all power. The car had to be restarted and was able to drive back home. Took the car to dealership who stated it was a battery issue and a plugged air filter. NO check of the transmission was completed. This is the CVT transmission. The battery is 6 months old and the battery was tested multiple times by other locations and tested good. This stalling making a turn seems to be an ongoing issue with Subaru and the CVT transmission.

NHTSA complaint #11464591 — an unverified report by a vehicle owner.

POWER TRAIN

Hill start assist system failure. Apply power, but the car would not go very far before the brakes were automatically applied. Pull out into traffic and the car would not go. Dangerous. Warning message that the system hill start assist should be inspected by a Subaru dealer. Drove on deserted city streets for two minutes and then everything was okay except the warning light stayed on until I got home and turned the car off. I have found out how to deactivate the hill start system and I will do that. I have not yet taken the car to the dealer.

NHTSA complaint #11459427 — an unverified report by a vehicle owner.

POWER TRAIN

PREMATURE WHEEL BEARING FAILURE, SUBARU ALREADY HAS A SERVICE BULETIN (#05-70-19 ANNOUNCED ON SEPT 30, 2019) RECOMENDING INSTALLING REVISED BRAKE BACKING PLATES DUE TO FACTORY INSTALLED NON-FLAT BACKING PLATES WHICH DISTORT THE REAR WHEEL BEARINGS/HUBS CAUSING PREMATURE WHEEL BEARING FAILURE. THIS IS A WELL DOCUMENTED OCCURANCE NOTED ON NATIONAL SUBARU WEB PORTALS FOR MULTIPLE MODELS WITH POSSIBLE CATASTROPHIC OUTCOMES.

NHTSA complaint #11441067 — an unverified report by a vehicle owner.

POWER TRAIN

The car regularly lurches or feels as it will stall. This occurs when trying to go from stops to starts both in a slow and faster manner. Has occurred while trying to turn left with oncoming traffic and I was concerned I may get hit. Dealership said “all 2015 Forrester do this. It drives like the others on the lot. There aren’t any issues and if there were we would see light”. Obviously this is a know issue and Subaru doesn’t want to address it. When it happens the rpms shutter abs the speed doesn’t change

NHTSA complaint #11435841 — an unverified report by a vehicle owner.

POWER TRAIN

We were driving on the highway going 65 and then there were two quick shudders and jerks of the car. Seemed to lose power in those moments. Immediately after that, we could hear a faint whoosh sound when on the accelerator but the car did accelerate. That sound was not there before the shudders. Then about 30 seconds later the power gave out and the car started slowing down very quickly. Luckily we were in the right lane and could pull off to the shoulder quickly, though the shoulder was very narrow and dangerous. The car slowed down very quickly without applying that much brake. When we were stopped on the shoulder, I applied the accelerator, and the car was in Drive, and it didn’t go anywhere. Then we put it in park and the car rolled forward. So both the drive and park gears were not working. We turned the car off and then back on to try the gears again. Same issues happened again with drive and park. This was a very dangerous situation that occurred quickly on a highway. The issue described and what we experienced seems to be consistent with similar issues with other CVT transmissions. We hope the NHTSA follows up with Subaru as we will be as well.

NHTSA complaint #11432282 — an unverified report by a vehicle owner.

POWER TRAIN

My 2015 Subaru Forester developed a high pitch noise emanating from the rear of the vehicle. The vehicle currently has less than 50,000 miles on the odometer and I am the original owner. I discovered that Subaru has issued a TSB regarding the issue (NUMBER: 05-70-19). The noise is loud and distracting and it appears that a complete bearing failure is imminent. Subaru should extend the powertrain warranty for this item to 10 years and or 100,000 miles and cover any owners previous repair costs.

NHTSA complaint #11430687 — an unverified report by a vehicle owner.

POWER TRAIN

Key will not remove from ignition when put in park. Happens about 40-60% of the time and must shift several times in and out of park to get key out of ignition. This is a known faulty part with several models (see Subaru Service Bulletin 16-112-18R) yet Subaru has not issued a recall. Replacement of known faulty part is at customer's expense. Safety issue - unable to exit car upon parking.

NHTSA complaint #11429119 — an unverified report by a vehicle owner.