Infiniti QX50 Complaints

283 consumer complaints on file.

#11680672August 14, 2025
FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING, ENGINE, ELECTRICAL SYSTEM
While driving on the highway and having no visible vehicle in front of me; my car automatically slams on the breaks and the Emergency Braking system light comes up on the dashboard briefly and then disappears. This has occurred multiple times while driving on highway speeds. It is concerning because there has been no evident or visible vehicles in front of my vehicle when my car abruptly slams on the brakes. To me this is a safety concern. I had mentioned this concern to the service advisor at Infiniti, but he said it would cost approximately $200 just to diagnose it. My vehicle is currently at a Infiniti dealership. They found a lot of metal debris inside the oil pan.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11678747August 6, 2025
ENGINE AND ENGINE COOLING
The contact owns a 2019 Infiniti QX50. The contact stated that the vehicle was not driven for 4-days while on vacation however, upon returning, the vehicle failed to start. No warning lights were illuminated. The vehicle was towed to the dealer, who diagnosed a failure with the engine after finding metal shavings inside the oil pan. The vehicle was not repaired. The contact was informed that the failure was not covered under recall. After investigating the failure, the contact related the failure to NHTSA Campaign Number: 25V437000 (Engine and Engine Cooling). The manufacturer was notified of the failure, a case was opened, and the contact was referred to the NHTSA Hotline for assistance. The failure mileage was 92,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11678562August 5, 2025
ENGINE, VEHICLE SPEED CONTROL
The contact owns a 2019 Infiniti QX50. The contact stated that while driving at an undisclosed speed and depressing the accelerator pedal, there was a beeping sound, and the vehicle stopped independently. A dealer was contacted. The vehicle was taken to the dealer to be diagnosed; however, the diagnostic result was unknown. The vehicle was not repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 48,520.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11677355July 30, 2025
SERVICE BRAKES, ELECTRICAL SYSTEM, FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING
3 separate accounts of automatic braking (phantom braking ) has occurred on the last year and electronic emergency brake would not engage 3 times in one day. Worried about rear end collision due to my car braking on its own. Brought to an infinity dealer who tested it with software (unknown type or version)and found no codes.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11677208July 30, 2025
SERVICE BRAKES
The contact owns a 2021 Infiniti QX50. The contact stated that while driving at various speeds, attempting to stop, the rear brakes would make an abnormal sound. No warning lights illuminated. The vehicle was taken to a local dealer where it was repaired for NHTSA Campaign Number: 25V437000 (Engine and Engine Cooling) however, the contact was advised that the rear brake pads, rotors, mount, cabin filter, air filter, transmission flush kit, and the back rear passenger side tire balance required immediate attention for repairs. The vehicle was not repaired under warranty. The manufacturer was made aware of the failure. The failure mileage was approximately 32,059.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11676237July 25, 2025
ENGINE AND ENGINE COOLING
The contact owns a 2021 Infiniti QX50. The contact stated that while driving at an undisclosed speed, there was an abnormal sound coming from the engine compartment, prompting the contact to discontinue driving the vehicle. No warning lights were illuminated. The vehicle was taken to the dealer, who diagnosed a failure with the engine bearings, resulting in damages to the engine. The contact was informed that the engine needed to be replaced. The vehicle was not repaired. After investigating the failure, the contact related the failure to NHTSA Campaign Number: 25V437000 (Engine and Engine Cooling). The VIN was included, but the vehicle was not repaired. The manufacturer was notified of the failure, a case was opened, and the contact was later informed that the manufacturer would not cover the cost to replace the engine because the failure failed to meet the requirements for engine replacement. The failure mileage was 80,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11676029July 24, 2025
ENGINE AND ENGINE COOLING
The contact owns a 2019 Infiniti QX50. The contact received notification of NHTSA Campaign Number: 25V437000 (Engine and Engine Cooling). The vehicle was taken to the dealer for the recall repair and the contact was informed that the engine and turbo charger needed to be replaced; however, the turbo charger was not covered under the recall. The vehicle was not repaired. The manufacturer was notified, a case was opened, and the contact was informed that the manufacturer would not cover the cost of replacing the turbo charger. The contact had not experienced a failure. Parts distribution disconnect.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11675941July 24, 2025
UNKNOWN OR OTHER
Component/system that failed: Panoramic sunroof glass on a 2023 Infiniti QX50. Date of Incident: July 21, 2025 at approximately 8am. Incident description: While my daughter was driving on the interstate at normal speed, the panoramic sunroof suddenly and spontaneously shattered. There was no impact, no visible object, and no warning. The explosion of glass was loud and violent. Safety risk: Thankfully, the sunroof shade was closed at the time of the incident. Had it been open, glass would have rained down inside the cabin, potentially causing serious or even fatal injuries. This was a terrifying failure with high risk to life and safety, particularly at highway speeds. Immediately after the incident I called Infiniti of Memphis where we purchased the vehicle brand new, and it is currently under warranty. I was notified that since there isn’t a current recall anything glass related is not included under warranty and I would need to file a claim under my insurance. We were forced to file a claim through our insurance provider to repair the damage — despite no fault on our part. Warning signs or prior symptoms: There were no warning lights, no abnormal sounds, and no signs of weakness or cracking. The glass failed without warning. Cause: UNKNOWN — but based on public reports, thousands of similar incidents have occurred in other Infiniti and Nissan models. This appears to be part of a known manufacturer defect currently involved in active class-action litigation (Johnson v. Nissan North America) regarding spontaneous sunroof explosions.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11673639July 15, 2025
ENGINE AND ENGINE COOLING
The contact owns a 2019 Infiniti QX50. The contact stated while driving 40 MPH, the vehicle experienced a temporary reduction in engine power. The contact was able to pull over to the side of the road. The contact stated that the check engine warning light was illuminated. The failure became persistent with significant reduction in engine power while attempting to accelerate. The vehicle was taken to the dealer, who diagnosed that the variable compression actuator had failed and needed to be replaced. The vehicle was not repaired. The manufacturer was informed of the failure and offered a partial payment for the repair. The failure mileage was approximately 49,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11672369July 9, 2025
ENGINE, ELECTRICAL SYSTEM, FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING
In November 2024, my 2019 Infiniti QX50 experienced a sudden and severe mechanical failure while driving. The vehicle unexpectedly lurched forward and then came to a complete stop in traffic. At that point, I was unable to shift the car into neutral or any other gear, which resulted in obstructing traffic. The vehicle was towed to a local mechanic, who diagnosed a total engine failure and quoted repair costs between $15,000 and $20,000 related to a VRC component. Recently, I became aware of a recall concerning similar engine issues affecting certain Infiniti QX50 models. However, my vehicle’s VIN is not listed among those affected by the recall. Given the severity of the failure and the potential safety risks, I would like to formally file a complaint regarding the 2019 Infiniti QX50 to ensure this issue receives proper attention. Thank you for your time and consideration.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11671724July 7, 2025
ENGINE
Banister Nissan of Chesapeake Greenbrier and Priority Infinity of Greenbrier in Chesapeake Virginia diagnosed and Confirmed Engine failure , Low Compression to engine Bearing failure to engine . VC-Turbo engine to be exact Date confirmed June 20,2025 Car showed no visible signs prior to no longer starting up , no check engine light , no codes , and after being diagnosed dealer confirmed “your engine has low compression due to your bearings failing “ Bearing failure while driving could have been a serious accident caused and possible injury Mileage :58,000 miles
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11671267July 4, 2025
ENGINE
Engine failed. Metal shavings found in oil pan at Infiniti dealer. Mechanic recommended replacing the engine. It is available for inspection. The engine failure happened on a single lane stretch on mountain highway. by the grace of god I was able to get the car into a center turning lane and we were not hit by other vehicles at highway speeds or ~45mph. no warning lights came on just a noise and then it stopped. 4 days prior the vehicle was inspected at the dealership to ensure it was safe for the trip. All maintenance was confirmed to be in good order. The date on the inspection is the date it was emailed to me however the date of inspection was June 26th.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11666543June 12, 2025
FUEL/PROPULSION SYSTEM, ENGINE, UNKNOWN OR OTHER
Vehicle purchased from dealer 3/5/25 (brand new). Noticed struggle to start/shaking vehicle/weak power, within first week. Malfunction indicator light came on 4/15/25, brought into dealership for testing. Data showed fail/pass misfires upwards of 30 times. Diagnosed as fuel injector pump misfire. Part was replaced and picked up the vehicle 5/8/25. Vehicle misfired again on 5/9/25. Brought into dealership for further testing; service advisor stated that the misfire was "likely due to air in the new pump." Noticeable misfire again on 5/27/25, no malfunction indicator light came on, notified service advisor. 5/30/25 vehicle misfired significantly, malfunction indicator light came on again, brought in for service. 6/11/25 service advisor stated they are doing a "pin fit repair" to refit all the connector pins for the ignition coils. I don't feel safe in this car. It's brand new, and should perform as such. When it misfires, I can barely drive past 30mph. It shakes violently, and I don't know whether it is safe to be driving it. Dealership doesn't seem to understand what the actual problem is.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11664985June 4, 2025
ENGINE
Pulled out into an intersection with limited visibility. Once I got into my lane I observed a car behind me that I had not seen. I tried to accelerate to avoid being hit. My car began making a knocking sound with loss of power. The other car went around me on the shoulder to avoid a collision. Infiniti of Birmingham (Alabama) says that one of the bearings in the engine spun and there is metal shavings in the oil pan. They say I need a new engine with only 68,000 miles. They are “unsure” if Infiniti will warranty the cost of repairs. Absolutely ridiculous! Please help!
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11664372June 2, 2025
ENGINE
Engine made a pop sound while getting onto the freeway. It started to slow down and then I had to pull over and stop. Took to the mechanic and he explained there was metal shavings in engine. I needed to replace the whole engine.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11662553May 22, 2025
ENGINE
Car wouldn't start and been in the dealership for 2 weeks now where purchased due to purchasing a extended warrantee they need to look at it first. after several tech asses the problem they say the timing chain jumped a tooth and engine is shot. car has 66000 miles on it. I purchased with 48K so naturally i bought a extended powertrain warrantee that they say wont cover the cost of replacement due to not having the oil changed every 5K miles. I get it done about 8 or 9K due to using synthetic oils that say they are guaranteed for 15-20K miles. No lights or indication engine issues prior to my wife just trying to start the car one morning.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11660800May 13, 2025
ENGINE
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.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11658820May 4, 2025
ENGINE
My engine blow at 50,000 miles and now my VCR actuator has gone bad as well
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11652643April 3, 2025
ENGINE
Engine lost power in normal course of driving. Loud engine noise. Burning oil smell. Mechanic assessed an internal engine component like a broken rod is the cause. Whole engine needs to br replaced at 103k miles.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11650225March 24, 2025
ENGINE, FUEL/PROPULSION SYSTEM, POWER TRAIN
Vehicle is prone to stalling while on the road extremely dangerous starting issues after long trips
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

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