Subaru Crosstrek transmission problems

POWER TRAIN

Was driving on highway when all of the lights on my dash illuminated. Eventually I got a warning for oil at temp alarm. Was giving code P2757 and P0700. Looks like this a common issue in Subarus but doesn’t look like it covers anything after 2020.

NHTSA complaint #11754078 — an unverified report by a vehicle owner.

POWER TRAIN

While driving, my dashboard warning lights on my 2019 Subaru Crosstrek—AT OIL TEMP, EyeSight, and Lane Assist—illuminated simultaneously with a sudden onset of transmission slippage and erratic shifting, with no prior warning symptoms. The vehicle experienced a sudden mechanical failure of the Continuously Variable Transmission (CVT) torque converter clutch solenoid valve, which was diagnosed and confirmed by an independent service center under diagnostic trouble codes P0971 and C1431. This sudden loss of reliable vehicle propulsion and disabling of active driver-assist safety systems created an immediate collision hazard, severely compromising driver control and vehicle safety in live traffic. Subaru is denying reimbursement for this known CVT defect, expecting consumers to foot the bill after relying on a single mail notification sent 13 months prior. Although the failed component was replaced during this emergency repair using genuine OEM parts supplied directly by an authorized Subaru dealership parts department, all diagnostic logs, itemized parts records, and repair documentation are attached.

NHTSA complaint #11753371 — an unverified report by a vehicle owner.

POWER TRAIN

Viscous Coupling and center differential failing. unable to turn at low speeds. Low mileage vehicle, under 40,000. This is a several 1000$ repair that happens right after warranty

NHTSA complaint #11750393 — an unverified report by a vehicle owner.

POWER TRAIN

I am reporting a possible power train/drivetrain issue with a 2025 Subaru Crosstrek Wilderness. At steady highway speeds, most noticeably around 72–76 mph under light accelerator load, the vehicle produces a persistent high-frequency ringing/whining tone throughout the cabin. The noise stops when I lift off the accelerator and rarely occurs when traveling downhill, which suggests it may be related to drivetrain load rather than ordinary wind, road, or tire noise. The suspected component or system is UNKNOWN, but based on the operating conditions it may involve the CVT, differential, or related drivetrain/power train components. The vehicle is available for inspection upon request. The issue has been reproduced and confirmed by a Subaru dealer. The vehicle was previously inspected by the dealer, and the rear differential was replaced during an attempted repair, but the noise persisted. The vehicle was returned for additional diagnosis, and dealership personnel confirmed the same noise. The manufacturer later stated that the condition was considered a normal characteristic after comparison with another like-model Crosstrek Wilderness, but no specific root cause or technical explanation was provided. My safety concern is that a persistent, load-dependent drivetrain noise at highway speeds could indicate abnormal wear, resonance, or mechanical instability in the CVT, differential, or related power train components. If the condition reflects an unresolved defect, it could potentially lead to premature drivetrain failure or loss of power while driving at highway speeds. There have been no warning lamps or dashboard messages associated with the condition. The issue first appeared while the vehicle was still very new and under factory warranty, and it remains unresolved.

NHTSA complaint #11749212 — an unverified report by a vehicle owner.

POWER TRAIN

On [XXX] ~[XXX] PM, at highway speed on [XXX] eastbound near Frisco, CO (a mountain interstate), returning to Denver from Salt Lake City, my 2021 Subaru Crosstrek suddenly and without warning dropped into reduced-power limp mode and began lurching and shaking while the engine kept running. I lost the ability to accelerate or maintain speed. At the same moment the check engine light came on and multiple active safety systems automatically disabled: EyeSight, pre-collision braking, vehicle dynamics (traction/stability) control, and hill start assist. It took about two minutes to manage the lurching, power-limited vehicle across multiple lanes of traffic to reach the shoulder. My partner was in the vehicle. Had this happened on a bridge, a grade without a shoulder, a tunnel approach, or in heavier traffic, I believe a collision was a realistic outcome. The vehicle was towed to a Subaru dealer and diagnosed with a failed Thermo Control Valve. Sixteen trouble codes were stored, including P26A6, P0606, P060B, P2138, P2135, P2122, P2119, P2004, P2005, and P0191. Mileage was 49,983. There was no prior symptom. The vehicle had a full multi-point inspection at the same dealer only 11 days and ~1,400 miles earlier ([XXX]); nothing was flagged. This failure mode is already known to Subaru, addressed by Technical Service Bulletin 09-119-24 and a warranty extension to 15 years/150,000 miles; the dealer repair order confirms the TSB. I am concerned Subaru handles a safety-relevant failure, one that disables collision-avoidance systems at highway speed, through a quiet warranty extension rather than a recall or owner notification. Owners get no warning and discover it only when it fails dangerously. I request NHTSA open a formal safety defect investigation. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA complaint #11739117 — an unverified report by a vehicle owner.

POWER TRAIN

DEFECT DESCRIPTION My 2020 Subaru Crosstrek has been diagnosed with diagnostic trouble code P2757 (Torque Converter Clutch Pressure Control Solenoid Control Circuit Performance), which my authorized Subaru 802 Subaru retailer in Vermont has confirmed is caused by a defective CVT Control Valve Body. Subaru of America has acknowledged this exact defect in Technical Service Bulletin 16-156-25R (revised 10/28/25), which explicitly covers the 2013–2021MY Crosstrek 2.0L (FB20 engine, TR580 CVT) and prescribes replacement of the CVT Control Valve Body with an updated design incorporating an improved valve sleeve. This bulletin confirms that Subaru is aware of the design flaw in the original valve body and has developed a permanent engineering fix. WARRANTY EXTENSION DISPARITY Subaru of America issued a CVT Warranty Extension on June 30, 2025 (Retailer Bulletin 16-155-25R, revised 07/14/25) extending CVT coverage from the original 5 years/60,000 miles to 10 years/100,000 miles for certain 2019–2020MY vehicles. However, the 2020 Crosstrek equipped with the FB20 engine and TR580 CVT was specifically excluded from this extension, despite: 1. The 2019 Crosstrek (identical FB20/TR580 drivetrain) being included in the extension. 2. The 2020 Impreza (identical FB20/TR580 drivetrain) being included in the extension. 3. TSB 16-156-25R explicitly listing the 2020 Crosstrek as an affected vehicle with the same valve body defect. This exclusion appears arbitrary and inconsistent. Owners of the 2020 Crosstrek are being denied warranty coverage for a documented design defect that Subaru has acknowledged and corrected through a TSB, and for which owners of vehicles with the identical powertrain (same engine, same CVT) are receiving extended warranty protection. SAFETY CONCERN DTC P2757 indicates a failure in the torque converter clutch pressure control circuit. This defect can result in unexpected transmission behavior including hesitation, shuddering, loss of power delivery

NHTSA complaint #11737783 — an unverified report by a vehicle owner.

POWER TRAIN

Wheel bearing failure resulting in replacement of the bearing and the integral hub at a cost of ~$750 (independent service center diagnosed and replaced the failed unit). Vehicle had only 42,000 miles and had developed a "rumble" which was thought to be related to seasonal temperature changes/tire tread. Sudden/catastrophic seizing of a failed wheel bearing can cause a loss of control and accident, thus this report as to the potential severity of the issue. No automated warnings other than a noticeable rumble when vehicle was in motion with increased severity over a few weeks. Manufacturer advised by email of the situation. Vehicle repaired and invoice attached to this report.

NHTSA complaint #11737615 — an unverified report by a vehicle owner.

POWER TRAIN

My 2020 Subaru Crosstrek CVT Valve Body equipment failure and CVT Torque Converter failure. This appears to be a common failure for prior Subaru Crosstrek model - however was not extended for coverage to 2020 and beyond models - appears the issue still persists and additional year models should be covered. My vehicle experience the same failure for CVT Valve Body failure and CVT Torque Converter while driving at highway speeds. Problem occurs for previous Subaru Models example: MC-11021247-0001, Subaru Service Bulletin: 16-155-25R where Subaru extended coverage to 10yrs/100k miles or +1 year from date of notification - and my vehicle is currently at the Subaru Dealership for repairs for both CVT Valve Body and Torque Converter. Warning lights did not appear until issue occored.

NHTSA complaint #11737051 — an unverified report by a vehicle owner.

POWER TRAIN

The vehicle is a 2024 Subaru Crosstrek with ongoing and unresolved safety-related defects. The vehicle has been taken in for multiple repair attempts, including a total of five diagnostic inspections, but the issue remains unresolved. The vehicle experiences sudden hesitation, loss of acceleration, and failure to respond properly while driving. Warning lights appear on the dashboard, and in some instances the vehicle fails to restart properly after coming to a stop. These issues create a serious safety risk, especially when driving in traffic or attempting to merge, as the vehicle does not respond as expected. The condition is unpredictable and has occurred multiple times. Despite repeated repair attempts, the manufacturer has been unable to diagnose or repair the defect. The problem continues to occur and significantly affects the safety and reliability of the vehicle. This issue poses a serious safety hazard to the driver, passengers, and others on the road.

NHTSA complaint #11725723 — an unverified report by a vehicle owner.

POWER TRAIN

The rear differential on my PHEV Crosstrek failed around 31,500 miles. My spouse was driving under 30mph and turning, and heard a clunking/popping/metal-on-metal sound that persisted intermittently for the remainder of the drive home. Since then on 1/8/26, the sound has been aggravated and persistent, every 45 seconds or so while driving, mostly while turning, so we brought it in and were alerted to significant and large metal shavings in the rear differential oil. The current service bulletin (03-95-24) the dealership is relying on to inform the replacement describes sounds much subtler than the sounds my car is making and I remain concerned about other components in my vehicle that may be impacted by this failure. This kind of failure is a safety risk and did occur in traffic in my spouse’s case. The metal-on-metal sounds and drivetrain resistance are alarming. Thankfully my spouse was able to safely get home and alert me to the situation so we could take it in. I have not engaged in any of the vehicle uses that typically relate to rear differential failures; I don’t engage in heavy off-road use or tow heavy trailers with my vehicle, I have only had my tires replaced at Subaru, and the only gear/differential oil was from Subaru. I also did not have any deleterious or obvious gaps in differential/gear oil replacement that could reasonably cause this issue, as confirmed by a dealership mechanic. I have researched extensively about this unusual (and expensive) part failure and have alerted SOA to my concerns. My research is showing it appears to be a trend warranting further investigation.

NHTSA complaint #11720387 — an unverified report by a vehicle owner.

POWER TRAIN

The rear differential had a contained catastrophic failure. The vehicle had been serviced according to the manufacturer schedule and by their own dealers. The car had never been off road. The failure occurred at 106,500 miles and 6.3 years.

NHTSA complaint #11718173 — an unverified report by a vehicle owner.

POWER TRAIN

Vehicle was maintained by dealer and out of the blue, started bucking intermittently while driving resulting in an unsafe driving experience. took it to the dealer to evaluate, told us, "They could change the transmission fluid and filter to see if that fixes the problem." they were not sure that would fix the issue. After researching issue, saw there were numerous complaints about the transmission in the 2018 crosstreks. Call a professional transmission shop and will be making an appointment with them in the near future. They told me (and I found out through my own research) if is was the transmission filter and fluid, it would act up all the time, not just intermittently. And... the dealer wanted to charge me $665 to change the filter/fluid and not sure it would fix the problem, seriously? so now I have to wait and see what the transmission shop says. I have also seen post about the ignition box also gives issues, so who knows, maybe it is the ignition cutting out causing it to "buck" every here and there. Either way, the vehicle is unsafe to drive and could potentially cause a major accident if the transmission locks up or the ignition totally cuts out. Should be a recall either way and Subaru should be responsible for it. This is nothing we have done that could've prevented this issue.

NHTSA complaint #11718031 — an unverified report by a vehicle owner.

POWER TRAIN

The car started shaking and shuddering at 40 mph on a straight road and I had several losses of motive power, with sluggish acceleration of a busy road. All dashboard lights began to turn on. The Oil Temp light was flashing, indicating an powertrain issue. After slowly driving it to a Subaru dealership, I was told that the CVT needed to be replaced. This model year also had a loss of motive power when cylinder 4 short circuited (after full replacement due to a recall). These are two examples of loss of motive power at high speeds on a single vehicle which in my opinion constitute a severe safety issue

NHTSA complaint #11701550 — an unverified report by a vehicle owner.

POWER TRAIN

Premature shift fork failure in 2017 Subaru Crosstrek manual transmission at 62,521 miles requiring complete transmission replacement ($10,000 repair, vehicle worth $11,000). EVIDENCE OF DESIGN DEFECT: - Subaru issued TSB 03-83-20R acknowledging shift fork design flaws in 2018-2020 Crosstreks with identical transmission - TSB states original forks required "thicker nylon inserts" proving inadequate design - My VIN (HG269902) is before production change (LG225906), confirming defective pre-improvement design - Shift fork failure can cause sudden inability to shift gears while driving - significant safety hazard MAINTENANCE: Single owner, meticulously maintained with documented service at 20k, 39k, 52k, 58k miles. Never in accident. No abuse. MANUFACTURER RESPONSE: Subaru offered only $1,800 (18% coverage) and blamed my "driving habits" despite TSB proving design defect. REQUEST: NHTSA investigate shift fork failures in 2015-2017 Crosstreks and evaluate if TSB 03-83-20R should extend to these model years. See attached: Complete complaint documentation and TSB 03-83-20R.

NHTSA complaint #11694927 — an unverified report by a vehicle owner.

POWER TRAIN

. I expect a full recall on this model years and relative MY vehicles with this specific engine due to its obsolescence in the subsequent years. I feel as if I was sold a lemon and defective engine that will eventually become a death trap Dear Bloomington Subaru Service Manager, I want to reiterate that this is not an isolated incident limited to your facility. Over the course of this vehicle’s history, I have visited more than five different Subaru dealerships — including White Bear Luther Subaru, Miller Hill Subaru, Walser Subaru, Morrie’s Minnetonka Subaru, and your own Luther Bloomington Subaru — for recurring ECM and engine-related concerns. Despite multiple ignition coil replacements, repeated ECM flashes/reprogramming, and assurances that the most recent updates would permanently resolve the issue, my Crosstrek continues to suffer from clunking, rattling, difficulties accelerating, rough idling, and even complete stalling when idling or in hot temperatures. At my most recent visit to Bloomington Subaru, the ECM was not loaded with the current software, ECM C1424 and C1422 and Diag Trouble Code P0011 code. There are 5-7 Subaru bulletins about ECM and these codes. I had this b4 2yrs ago yet the dealership won’t assist with repairs or costs associated with this defective oil control valve part as well as the defective design in the ECM / ECU and this specific engine in the 2019 Crosstrek, of which is no longer produced or manufactured. The ECM or Oil control valve has since been “replaced” and swapped with other components in future generations of Subarus this is defective & mechanically related, not from wear and tear or personal useThere is a recall where the camshaft can break and the PCV too leading to complete catastrophic engine failure, which is a safety issue and expired, but despite 5 ECM flashes, 3/4 sets of ignition coils my vehicle still struggles with the same issues today, costing me $750 and months with my car in the shop, recall this engine

NHTSA complaint #11683546 — an unverified report by a vehicle owner.

POWER TRAIN

PCV problems and the dealership saying they fixed and completed this recall and have not done so and now CVT problems saying there’s no parts to fix it and have to re do the whole valve system Starter with thinking it was a wheel bar ring problem To trying to figure out if it was a pcv with the engine or cvt with the transmission These are major safety problem that should not be happening

NHTSA complaint #11678295 — an unverified report by a vehicle owner.

POWER TRAIN

The contact owns a 2022 Subaru Crosstrek. The contact stated that the vehicle was difficult to start and was jumpstarted several times by a dealer’s mobile technician. The vehicle was taken to an unknown dealer, where it was determined that the battery was in good condition, and the failure could be related to the manual transmission. The vehicle was not repaired. Additionally, the contact stated that a AAA technician who assisted in jumpstarting the vehicle confirmed that the alternator and the battery were in good condition. The technician informed the contact that the vehicle was experiencing a parasitic battery drain; however, the cause of the failure could not be determined. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was approximately 34,000.

NHTSA complaint #11675423 — an unverified report by a vehicle owner.

POWER TRAIN

The contact owns a 2019 Subaru Crosstrek. While the contact was attempting to start the vehicle, the vehicle failed to start. There was no warning light illuminated. The contact stated that while the engine was still off, the gear shifter was shifted into reverse(R) and the vehicle accelerated backwards. The contact slammed on the brake pedal to prevent the vehicle from crashing into another parked vehicle. The contact pressed the ignition button with her foot on the brake pedal to start the vehicle. The dealer was notified of the failure and an appointment was scheduled to service the vehicle. The vehicle was not yet repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 15,000.

NHTSA complaint #11666127 — an unverified report by a vehicle owner.

POWER TRAIN

The rear differential on my Subaru Crosstrek Hybrid has failed twice. The first failure occurred around 12,000 miles and the second around 50,000 miles, both while maneuvering slowly in a parking lot. There were no warning lights or messages beforehand. The failure caused grinding and drivetrain resistance while turning. During the second incident, a certified Subaru dealer confirmed the rear differential had failed again. They also discovered that Subaru had issued a revised version of the differential that is no longer compatible with the original axles, requiring additional parts to complete the repair. I was informed the original design has been discontinued, suggesting Subaru was aware of an issue. This kind of drivetrain failure is a significant safety risk, especially if it were to occur at higher speeds or in traffic. The issue has now occurred twice on my vehicle under normal driving conditions, and was verified both times by a 2 Subaru dealerships in Southern California. When I returned to pick up my vehicle, I was told by the service technician that another hybrid Crosstrek had just come in for the exact same failure. Additionally, a local independent Subaru performance shop mentioned they have performed three similar rear differential replacements this year. This clearly appears to be a recurring problem, potentially linked to a design flaw, and I believe it warrants further investigation.

NHTSA complaint #11661551 — an unverified report by a vehicle owner.

POWER TRAIN

The CVT valve body was diagnosed as defective by the Subaru Dealership service department. The car was taken to the dcealership when the A/T OIL EMP, HILL ASSIST, ABS and TRACTION CONTROL, STABILITY CONTROL lights came up. The valve body is still available for inspection. The car was taken to the dealership for a Brake Light Switch recall that has the same simptoms.

NHTSA complaint #11657595 — an unverified report by a vehicle owner.