2019 Infiniti QX50 transmission problems

Filed Oct 13, 2026 · Engine, Transmission · GA

On October 11, 2026, while driving my 2019 Infiniti QX50, I experienced a sudden loss of engine power. The check-engine light began flashing, the engine started shaking and making a knocking noise, and the vehicle would not accelerate beyond approximately 20 mph despite pressing the accelerator. This unexpected loss of power created a serious safety concern because I could no longer maintain normal driving speeds. In February 2026, at approximately 170,450 miles, my vehicle underwent an inspection at Infiniti of South Atlanta under the federal safety agency safety recall 25V437, involving defective engine bearings. The dealership informed me that the vehicle passed because insufficient metal debris was found in the oil pan to qualify for engine replacement. Approximately eight months later, on October 12, 2026, the same dealership inspected my vehicle at 197,467 miles. The technician's notes documented failed connecting rod bearings and an injector failure. The dealership recommended replacing the engine long block, turbocharger, and associated components. The vehicle remains at the dealership, unrepaired and available for further inspection by arrangement. I am concerned that the engine experienced a bearing failure after previously passing an inspection under a safety recall involving defective engine bearings. The relationship between this failure and the recall has not yet been determined. I request that the federal safety agency review this incident and investigate whether the failure may be related to recall 25V437 or the effectiveness of the completed recall remedy.

Filed Oct 11, 2026 · Engine, Transmission · NY · crash

While driving my 2019 Infiniti QX50, the engine suddenly lost significant power and entered failsafe (limp) mode due to a diagnosed VCR actuator fault (diagnostic codes P11A8-00 and P11AC-00). The sudden power loss caused a single-vehicle accident. No injuries. The vehicle had recall 25V437 service performed at Infiniti of White Plains on 08/27/2026. The check engine light was documented as ON during that visit. I am requesting that the federal safety agency investigate whether the VCR actuator failure mode can cause sudden power loss creating a crash risk.

Filed Oct 11, 2026 · Engine, Transmission · NY · crash

While driving my 2019 Infiniti QX50, the engine suddenly lost significant power and entered failsafe (limp) mode due to a diagnosed VCR actuator fault (diagnostic codes P11A8-00 and P11AC-00). The sudden power loss caused a single-vehicle accident. No injuries. The vehicle had recall 25V437 service performed at Infiniti of White Plains on 08/27/2026. The check engine light was documented as ON during that visit. I am requesting that the federal safety agency investigate whether the VCR actuator failure mode can cause sudden power loss creating a crash risk.

Filed Oct 6, 2026 · Engine, Transmission · TX

While driving on the highway the vehicle would not accelerate and the oil pressure light came on. After pulling over we noticed a slight burning smell and cut the engine. After a few minutes we tried to start the car again and it would not start. Vehicle was towed to independent repair shop who told us the engine had seized. We then learned of the current recall effecting this make model and year of vehicle. The vehicle experienced the same series of events outlined in a service bulletin for the recall. Vehicle was then towed to local Infiniti dealer and they were told the engine is seized and asked to drop oil pan per recall guidelines to confirm and diagnose. After not hearing from dealer after 2 weeks I follow up to be told the vehicle had not been looked at yet and they would get it in that day and call me no later than next day. Once week goes by and they still had not contacted me. I contact them and am told the only thing wrong with my vehicle was a dead battery and that would cost X amount to replace. At that point my car had been sitting in the summer sun for 3 weeks, of course the battery is dead. I reluctantly agree to the repair. After another week I follow up on the repair and am told after replacing the battery the car still will not start and I asked again about the recall diagnosis. After another week, we contact them and am told the car shows information consistent with bearings recall and they submit to Infiniti to approve. A repair timeline is discussed at this time. 24 hours later we are contacted by dealer for first time and told it now does not fit under recall. Have a case with Nissan consumer affairs. We have asked several times for work order and photos of what they are looking at and have not received. Dealer is now asking for $300 plus dollar diagnostic fee to see what is wrong. They say sludge caused engine failure and not recall issue. It has been 46 days at this point and no resolution. Per recall, sludge can be caused by bearings issue

Filed Jul 24, 2026 · Transmission · WI

My 2019 Infiniti QX50 has the KR20DDET 2.0L VC-Turbo engine involved in the federal safety agency Recall 25V437/Infiniti Campaign R25B2 for potential engine-bearing failure, but my VIN does not currently show an open recall. The vehicle is at Infiniti Milwaukee, [XXX], [XXX]. During inspection, bronze-colored metallic glitter/debris was found in the engine oil. This may indicate internal bearing wear and appears consistent with the metal debris that Recall 25V437 requires dealers to check for in the lower oil pan. The dealership is refusing to acknowledge or report the bronze-colored debris as possible bearing material. It reported only “engine sludge” to Infiniti and is treating the engine repair as customer-pay. Sludge and bronze-colored metallic particles are visibly different conditions. The vehicle and engine are available for inspection at the dealership. I requested preservation of the oil, filter, oil-pan contents, photographs, video and technician findings. Bearing failure could cause engine damage or loss of power while driving, increasing crash risk. Warning lights before inspection: UNKNOWN. The exact composition of the debris is UNKNOWN pending testing. You see metal debris in oil pan of the video of an engine that failed citing sledge while clearing seeing metal debris in the photo provided by the dealership. I request that the federal safety agency investigate whether this vehicle was incorrectly excluded from the recall and whether recall-related metallic debris is being misclassified as sludge. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Jun 22, 2026 · Acceleration, Engine · TX

2019 Infiniti QX50 with engine bearing failure defect matching the federal safety agency Recall #25V‑437. Vehicle was sold to me on 12/24/2025 by a dealer, MORE THAN FIVE MONTHS after the recall was issued on 07/14/2025. The dealer NEVER disclosed the active, unrepaired safety recall. Two months after purchase, the engine developed loss of power and unusual noises - exact symptoms described in the recall. An independent mechanic diagnosed a pre-existing camshaft bearing defect. Despite component replacement, symptoms persist, confirming the defect was present at time of sale. This is a serious safety violation. The dealer knew or should have known about the recall via CARFAX and failed to disclose it, violating federal law 49 U.S.C. § 30120. The vehicle is unsafe to drive with an unrepaired engine bearing failure. Safety Risk: Engine bearing degradation can lead to complete engine failure while driving, resulting in loss of motive power and crash risk. Requested Action: Federal investigation into dealer's failure to disclose active safety recalls.

Filed Apr 28, 2026 · Transmission · 127,377 miles · CO

I am the owner of a 2019 Infiniti QX50, VIN [XXX] , and I am filing this complaint due to repeated, severe mechanical failures that have rendered my vehicle unreliable and unsafe. Since purchasing the vehicle, I have experienced catastrophic failures requiring two complete engine replacements, two turbocharger replacements, and one transmission replacement. My vehicle has spent over one year cumulatively at repair shops, leaving me without transportation and in constant fear for my safety. I am unable to drive this vehicle on the highway or for long distances due to the very real risk of sudden engine stall or failure at speed. I am aware that Nissan has issued Recall 25V‑437 acknowledging manufacturing defects in the VC-Turbo engine bearings on the 2019–2022 Infiniti QX50, and I believe my vehicle's repeated failures are directly related to this defect. Despite multiple repair attempts by authorized Infiniti dealerships, the underlying issues have not been resolved. I am requesting that the federal safety agency investigate this vehicle and pressure Nissan/Infiniti to provide an appropriate remedy, including a full vehicle repurchase or buyback. My family's safety is at risk every time we are forced to drive this vehicle. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Apr 6, 2026 · Engine, Transmission · TX

The car had a power failure so I took it to the dealer to have it checked since it had an open recall, according to what the mechanic tells me is that the fault comes from the mild tree, but he does not tell me what causes that failure and he has not given me the results of the recall either

Filed Feb 24, 2026 · Engine, Transmission · MO

Vehicle: 2019 Infiniti QX50 Mileage at engine replacement: 31,830 miles Date of engine replacement: August 2023 (recall-related repair) The engine in my 2019 Infiniti QX50 was replaced under recall at 31,830 miles in August 2023. Approximately 18,633 miles later, the vehicle began experiencing transmission malfunction symptoms consistent with CVT failure. An independent mechanic diagnosed the CVT transmission as needing replacement. I then took the vehicle to an Infiniti dealership, and they confirmed transmission issues but declined warranty coverage because the powertrain warranty expired February 28, 2025. The transmission is directly integrated with the engine in this vehicle. Following the engine replacement, the transmission began exhibiting unsafe operating behavior, including hesitation, loss of acceleration response, and drivability instability. There are widespread consumer complaints and litigation involving this engine and CVT transmission combination in the 2019 Infiniti QX50. Infiniti extended coverage for the engine but has not extended coverage for the transmission despite known reliability concerns. I am now afraid to operate the vehicle due to concern of sudden transmission failure while driving, which could result in loss of power in traffic and create a safety hazard. I am requesting that the federal safety agency investigate this recurring pattern of CVT transmission failure following engine defects in the 2019 Infiniti QX50.

Filed Jan 5, 2026 · Engine, Transmission · TX

A few months ago, I received an email from CarFax letting me know that my vehicle, a 2019 Infiniti QX50 with 2.0L Turbo Engine had a major recall (the federal safety agency Recall Campaign No. 25V‑437). The letter indicated the recall was due to issues with the engine bearings which could lead to a catastrophic failure. I wasn't sure what this meant, so I took the car to Austin INFINITI. The technicians checked the oil pan to see if there were issues. My understanding is that the oil pan should have been removed, drained of all oil to ensure there were no issues that could lead to the catastrophic failure of the engine. None of this was done. I was given my car back and told all was okay. Unfortunately On the evening of November 10, 2025, my vehicle’s engine suddenly seized while driving at highway speeds. Fortunately, I was able to coast onto the Frontage Road. For my protection, the Police Department arrived quickly to park police vehicles in the front and back of my car with their lights on to avoid a nighttime collision or worse. I had no idea why my engine suddenly lost power while driving down the highway and continued to refuse to start despite repeated attempts to restart the vehicle, the engine would not start. I was scared to death and this situation has exacerbated my current diagnosis of PTSD for which I am currently in treatment. This was a horrifying event that could have cost me my life. I can't eat or sleep and experience nightmares that my car died, then I am hit by a car driving at highway speeds as I tried to exit the vehicle. My wife and I are both terrified of driving the car now. I tried to resolve the issue with my local INFINITI dealership and even contacted NISSA/INFINITI executives. I was met with disregard, disrespect and a $1,700 bill to replace the starter that burned out as we kept trying to start the car. The starter burnout was a secondary cause due to the primary issue of the engine seizure. Infiniti disagreed and insisted on the $1,700 for the starter.