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What 4 owners told NHTSA about the 2024 Infiniti QX50

These are the actual owner complaints behind this car’s reliability verdict, filed with the federal government, unedited. They’re unverified reports, not confirmed defects: read them as leads for your pre-purchase inspection, not a diagnosis.

All (4)Crash / fire / injury (1)Driver assistance (2)Electrical system (2)Engine (1)Fuel system (1)Lights (1)Seats (1)Transmission & drivetrain (1)

Newest first · 4 complaints

Jun 11, 2026Electrical systemLightsDriver assistance

Vehicle screens repeatedly rebooting over a 2 month period. Auto high beams stopped working. Chassis control error on dash occurred. Smoke smell in cabin occurred after dealer returned the vehicle from a repair attempt. Vehicle had to be towed back up . Dealer reporting they can not recreate errors and want to return it. It’s a safety hazard . Has been at the mechanics for over 20 business days. Dealer being unprofessional and swearing at the customer. Vehicle reported crash detection to emergency services in its own when sitting in a fast food drive through.

NHTSA ODI 11743558

Jun 10, 2026Transmission & drivetrainEngineFuel system

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

NHTSA ODI 11743319

Apr 6, 2026SeatsFire

I was driving from [XXX] to [XXX] on Saturday, March 28th. I started smelling a strong, chemical odor and my eyes started burning and watering, so I pulled off of the highway and found that my back passenger side seat heater had started burning. There was a pillow and a down jacket on the seat that also burned. It really scared me because I was in the middle of nowhere and only had a cup with ice, but luckily there was a mud puddle that I was able to get some water from and pour on the back seat. My granddaughter was riding in that seat in her booster seat the night before. I am thankful she or no one else was in the seat when it burned. There were no warning lights or messages appear - I just smelled the burning. I had to continue to drive the car with the windows down to my son's home in West Virginia, and on Monday, March 30th, we took the car and dropped it off at the nearest Infiniti dealership (Cochran Infiniti in Monroeville, PA). We spoke with the service manager and many employees came to inspect and they all said they had never seen anything like this before. They confirmed there had been no recalls on the vehicle. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ODI 11729452

Aug 26, 2025Electrical systemDriver assistance

The system falsely beeps and displays collision alerts even when no vehicles or objects are present. The system has also initiated braking on the highway with no obstacle present, which is a major safety concern for me and for other drivers. Conversely, when an actual vehicle approached too closely, the system failed to alert or respond at all.

NHTSA ODI 11683175

Working with the data? Download all 4 complaints as CSV · fetched from NHTSA July 12, 2026

How to use these: a complaint is one owner’s report, filed voluntarily and published unverified. Patterns matter more than any single story. If several owners describe the same failure at similar mileage, put that system at the top of your pre-purchase inspection list. Back to the full 2024 Infiniti QX50 verdict →