Infiniti QX50 stalling problems

Filed Sep 25, 2026 · Engine · 94,000 miles · TX

The contact owns a 2019 Infiniti QX50. The contact stated that while driving 70 MPH, the vehicle stalled; however, the contact was able to pull off the highway safely to a safe place. There was an abnormal burning odor coming from the vehicle. The oil pressure warning light was illuminated. The vehicle was towed to an independent mechanic and was diagnosed with a seized engine. The vehicle was later towed to dealer to see if the failure was associated with the federal safety agency Campaign Number: 25V437000 (Engine and Engine Cooling). However, the contact was notified that failure was caused by sludge in engine and could not qualify under the recall. The contact stated that the vehicle had exhibited the failure described in the recall, but the manufacturer and dealer refused to repair the vehicle without charge. The manufacturer was contacted by phone and made aware of the failure. The failure mileage was approximately 94,000.

Filed Jun 10, 2026 · Engine, Fuel system · TX

Engine bearing failures, sudden loss of power, stalling, or complete engine failure — creating crash risks.

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 Sep 22, 2025 · Engine · WA

Infiniti has admitted the KR20 VC-Turbo engine is defective and can catastrophically fail while driving, but they are dragging their feet on providing a remedy. By delaying the fix, they are gambling with customer safety — waiting until engines actually break to minimize repair costs. This is reckless and puts my family at risk. I am requesting immediate intervention by regulators to compel Infiniti to release the repair solution without delay, and to hold the manufacturer accountable for stalling tactics.

Filed Sep 15, 2025 · Engine · 67,000 miles · NJ

The contact owns a 2019 Infiniti QX50. The contact stated that while driving approximately 55 MPH, the vehicle was vibrating, and the vehicle stalled. There was no warning light illuminated. The contact attempted to pull over and felt that the vehicle had lost power steering assist functionality. The contact stated that extra effort was needed to steer the vehicle. The vehicle was shifted to park(P), and the check engine and oil warning lights illuminated. The contact attempted to restart the vehicle, but there was an abnormally loud knocking sound coming from the engine. The contact had the vehicle towed to a local dealer, where it was diagnosed but was not yet repaired. The contact was aware of the federal safety agency Campaign Number: 25V437000 (Engine and Engine Cooling). The manufacturer was informed of the failure, and the contact advised the manufacturer that the VIN was included in the recall, and the contact was informed that there was no fix for the issue. The failure mileage was approximately 67,000.

Filed Aug 18, 2025 · Engine · 82,000 miles · FL

The contact owns a 2019 Infiniti QX50. The contact received notification of the federal safety agency Campaign Number: 25V437000 (Engine and Engine Cooling); however, the part to do the recall repair was unavailable. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The contact stated that while driving approximately 45 MPH, the vehicle stalled. The contact was able to coast to the side of the road. There were no warning lights illuminated. The vehicle was towed to a certified mechanic who diagnosed a failure with the engine. The vehicle was not repaired. The vehicle was towed to the dealer and was diagnosed with engine failure. The contact was informed that the engine needed to be replaced. The manufacturer was notified of the failure. The dealer informed the contact that the engine would not be replaced free of charge under the recall and that the engine had to be covered under the MaxCare Warranty Coverage. The vehicle was not repaired. The manufacturer was made aware of the failure and opened a case. The failure mileage was approximately 82,000.

Filed May 13, 2025 · Engine · MA

The engine died on me after having the car for less than 2 years. Driving on the highway car just stalled. Had car towed to the mechanic and they said the engine failed. There are plenty of consumer complaints about this model having engine failure while the vehicle is still new and properly maintained.

Filed Mar 24, 2025 · Engine, Fuel system · NJ

Vehicle is prone to stalling while on the road extremely dangerous starting issues after long trips

Filed Feb 24, 2025 · Engine · SC

My Infiniti started making a slight ticking noise. The next day, the car abruptly stalled out while going down the highway causing the vehicle to loose speed and experience engine failure. Luckily, I was able to steer the vehicle to a more manageable location out of traffic. I had lost engine power and steering. After a certified mechanics diagnosis, the engine was declared blown. The bearings and rods have failed and the engine is no longer in repairable condition. The vehicle was serviced per manufacture regularly and there had been no signs of engine failure to that date.

Filed Nov 24, 2024 · Body, Electrical · GA

Engine shut off while driving 45mph with no prior warning