Subaru WRX loss of power problems

Filed Oct 22, 2026 · Engine · UT

This occurred in a brand new WRX with only 799 miles. I was driving on a very unpopulated road, and I had the high temperature warning display on the dash. The temperature gauge was reading high. I pulled over for a short duration to let the car cool down and then proceeded to limp it home since I was less than two miles away. I parked the car in the driveway, turned it off, exited the car, and noticed coolant leaking from the front of the bumper. I inspected what little amount of radiator that was exposed and could not find anything. I inspected my garage where the vehicle was previously parked and there was no trace of leaking coolant prior to leaving. It was towed to the dealership the next day, and they noted the vehicle was overheating driving it from the lot to the service bay. The dealer claims it failed from an impact. I went and inspected it myself expecting to see a hole in the radiator or obvious damage and couldn't find anything. I had to be assisted by a tech who used phrases like "I think it was in this area" and "near impossible place to be hit by something, but I guess it did." The "diagnostic" video points out an area the size of a tennis ball for where the alleged damage occurred- yet the damage is no where to be seen, especially what you would expect from an "impact". I've had a case open with Subaru of America for nearly three weeks with zero correspondence. There are plenty of posts in social media groups talking about radiator failures in 2022+ WRX's. These types of failures can lead to the engine overheating and locking up causing immediate loss of power and extensive damage- not to mention the level of loss of control one would experience and potential catastrophic end.

Filed Oct 21, 2026 · Transmission · AZ

Safety Complaint Details: The vehicle is a 2023 Subaru WRX experiencing recurring, severe powertrain and engine management failures that present an immediate life-safety hazard on active roadways. The vehicle has a documented history of chronic transmission system component failures, requiring a complete clutch assembly replacement early in its service history at 6,600 miles. Following a subsequent major transmission disassembly by an authorized retailer, the service department failed to perform a mandatory post-repair quality control test drive, releasing an improperly reassembled and dangerous vehicle into commerce. Within 48 hours of retrieval, the vehicle suffered severe high-speed throttle response loss, engine hesitation, and stalling behavior on active highway corridors. On XXX, while navigating mountain grades under absolute medical duress for a critical specialist appointment, a major engine turbocharger/vacuum hose clamp completely disconnected under load due to the dealership's reassembly negligence. This resulted in an emergency roadside breakdown in [XXX], accompanied by visible smoke, a severe burning rubber odor inside the cabin, and intense thermal heat transfer through the firewall directly into the driver’s footwell pedals. The vehicle continues to suffer from a dangerous unmetered air leak, gasping for air, engine power loss while climbing inclines, and physical gear shifter mechanism binding. The manufacturer (Subaru of America Case #XXX) has been formally notified of these structural and mechanical hazards but has failed to safely retrieve the vehicle, which currently remains grounded at my residence. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Oct 2, 2026 · Engine · CO

On June 24, 2026, my stock 2018 Subaru WRX Limited experienced a sudden catastrophic internal engine failure at approximately 67,319 miles while I was driving. I first heard an intermittent ticking/noise under acceleration. Within about two miles, the noise became much louder, followed by a loud pop, sudden loss of power, and smoke from the engine bay. I was able to get the vehicle stopped safely. I do not recall a warning light or message before the failure. The vehicle was towed to an authorized Subaru dealer. A full engine teardown found catastrophic internal damage concentrated in cylinders/rod bearings 2 and 3, including multiple holes in the engine block, while cylinders 1 and 4 were comparatively intact. The service advisor stated that the damage pattern did not appear consistent with generalized lack of oil and that recent over-revving was not indicated by the vehicle data. An independent inspection on September 17, 2026 confirmed catastrophic internal material failure involving cylinders 2 and 3, crankshaft damage, a deeply gouged cylinder wall, and metal debris associated with the failure. The inspector found no modifications, abuse, commercial use, or outside influence. This sudden loss of engine power and smoke while driving created a safety risk because the vehicle could no longer maintain normal power in traffic and there was concern about further mechanical damage or fire. The failed engine and disassembled components remain available for inspection, along with dealer teardown records, photographs, and the independent inspection report. The vehicle was stock and serviced through authorized Subaru dealerships. The exact initiating cause of the failure remains undetermined.

Filed Apr 6, 2026 · OR

Complaint Summary: I am filing a complaint regarding a potentially defective A/C compressor that is producing abnormal noise and may indicate premature failure. Description of Issue: My vehicle’s A/C compressor produces a loud, rhythmic “chugging” or knocking noise at idle when the A/C system is off. The noise is excessive and not consistent with normal operation. When the A/C is turned on, the noise changes but remains abnormally loud. Based on my experience and comparison to other similar vehicles, this is not normal behavior. A comparable 2024 Subaru WRX does not exhibit this issue, and many other 2022 WRX owners have reported similar symptoms. Safety Concern: This is not just a noise concern—it may indicate internal compressor failure or premature wear. The A/C compressor in this vehicle is part of a continuously driven system (no traditional clutch), meaning it is always engaged via the serpentine belt. If the compressor were to fail internally, it could: •Seize or bind, potentially damaging or breaking the serpentine belt •Lead to sudden loss of power steering assist (if belt-driven) •Cause loss of alternator function (battery charging failure) •Result in engine overheating if the water pump is belt-driven •Leave the vehicle stranded unexpectedly This presents a potential safety risk, especially if failure occurs while driving. Additional Context: Subaru has issued a Technical Service Bulletin (TSB) for a similar A/C compressor issue in another model using a comparable design, which includes replacement procedures for certain serial number ranges. Despite this, Subaru has not acknowledged the issue for the WRX, even though there are numerous owner reports of the same symptoms. Conclusion: The abnormal noise suggests a potential defect that could lead to premature failure and safety-related consequences. I am requesting that this issue be investigated for possible defects in design or manufacturing affecting the A/C compressor in the 2022 Subar

Filed Jun 21, 2025 · Engine · TX

In October 2024, my vehicle, a 2021 Subaru WRX STI, was purchased from a Toyota dealership (Fort Bend Sterling McCall Toyota). The dealership sold the vehicle with an oil issue and a modified ECM. This issue caused catastrophic engine failure while driving. The vehicle stalled and could not be started. Subaru dealership technicians confirmed the cause as improper service leading to catastrophic oil starvation. The failure put both myself and others at risk, as the engine lost power mid-operation on a busy road. The vehicle was towed to a certified Subaru dealership, where it has been detained since December 2024. Despite being under warranty, repairs have been delayed for over 6 months due to blame disputes between the dealership, the manufacturer, and the extended warranty provider. There were no prior dashboard warnings or messages before failure, only loss of power and engine noise at the time of the incident. The vehicle has been fully inspected and documented by the Subaru service center, and all evidence has been preserved. I have been without a primary vehicle for over 7 months.

Filed May 14, 2025 · Transmission · NC

Driving kids home from school and while making a left hand turn through a large intersection, when shifting from 2nd to 3rd gear I heard an immediate pop and then it lost all power in third while sounding like a bag of gravel under the car. I could have easily lost power while merging on a highway instead of a lower speed turn and endangered the welfare of my two daughters. Subsequent tear down by Parkway Subaru confirmed that 3rd gear had experienced catastrophic failure with hardly any gear teeth remaining on 3rd gear. I have found the problem reported numerous times online, specifically third gear. The transmission was inspected by a Subaru of America specialist, who then denied that it was a manufacturer issue. No warnings or signs of mechanical failure prior to the incident. Shifting had been normal and routine throughout lifetime of the car (1 year 15k miles). I had to wait 2 weeks to be told they were denying warranty or good will assistance on a year old vehicle purchased new. I have been driving a rental car since the incident while my car has been sitting at the dealership. Dealer has been unable to provide specific reasoning for denial of warranty beyond stating that "they feel it is not a manufacturer or material defect". Feelings aren't empirical evidence of failure last time I checked. I have tried to reach SoA agent assigned to my case for three straight days with no communication until this afternoon (5/15) in which I missed their call and they did not respond when I called back within 5 minutes. Attached below are pictures from other consumers who experienced the same failure, as well as a picture of my own failure and are a report on subaru 2022+ wrx models and issues relating to 3rd gear specifically.

Filed Feb 2, 2025 · Engine, Fuel system · CO

Excessive blow by contaminating MAP sensors & creating lean/rich conditions. This causes loss of power, stalling and will lead to catastrophic engine failure. EGR system is faulty

Filed Mar 27, 2024 · Engine · WA

Engine rod knock at 32,000 miles due to bearing failure causing loss of control of vehicle and sudden loss of power and control. Car was logged to be traveling at 35 mph with normal acceleration at time of failure. Carter Subaru confirmed bearing failure, and fits with the pattern confirmed in 2012-2017 WRX STi engine failure class action settlement, as part in 2018 remains unchanged from 2017 according to mechanics. Head mechanic at dealership confirmed that only car modification (intake) would not cause catastrophic loss of oil leading to bearing failure, and thus it is likely due to engine design that leads to poor oil circulation as a known issue in this EJ25 engine type. Engine components have been inspected by Carter Subaru, and have been made available to Subaru of America, along with images, videos, pictures, receipts, logs, records, computer/ECU data, receipts, tool purchases, and other maintenance and service logs for the car (including prior to ownership). Dealership acknowledges that the car maintenance exceeded the manufacturer recommendation, yet engine still failed even with oil changes done at 3,000 mile intervals... While manual states much higher interval to follow. Engine still failed at increased oil change levels. Problem appeared once engine started knocking, which means the engine has already suffered irreversible engine failure and needs to be replaced, according to Subaru. Subaru of America assigned a customer advocate but has been incommunicado for the duration of the investigation and refuses to answer or even acknowledge that a claim has been opened, as they constantly cite erroneous interactions with the vehicle owner.

Filed Dec 14, 2022 · Engine, Fuel system · AR

The Direct Injection Engine causes valves to become coated in carbon build-up, unlike indirect injections which constantly clean the valves. This issue then results in the sudden loss of power and engine stalls (often when attempting to accelerate from low speeds) which are extremely dangerous when attempting to merge or turn in traffic. Subaru has not addressed the issue but based on online searches it appears to be a major issue for all 2.0l direct injection engines.

Filed Nov 17, 2022 · Engine, Transmission · NV

I first noticed the car engine began making a loud ticking sound and significantly lost power as I exited the freeway heading toward my home after work. After towing the vehicle to the Subaru dealership, they tore apart the engine and found a connecting rod bearing had failed. It had slid out between the rod and crankshaft and shattered in the oil system sending shards of metal into the engine and all components that the oil touches. Every component that oil touches needed to be replaced. Prior to this problem, maintenance and oil changes were performed according to Subaru's specifications. Had the engine completely failed on the freeway during my commute home (during rush hour traffic) I could have caused an accident and possibly hurt myself and others. Subaru inspected and kept the components that were faulty though they never accepted responsibility for the failure of the components. There was absolutely no indication nor warning signal prior to the failure of the connecting rod bearing. Subaru blamed me for the component failure saying the vehicle was not properly maintained though they never asked me for proof of maintenance. I had to pay $7868 to repair the car to it's original mechanical state.