50 of the
394 complaints filed about the Infiniti QX50
are about the driver-assist systems —
13% of everything owners reported.
The worst model year for it is 2019.
50
Complaints
13%
Share of all complaints
0
Crashes
0
Fires
Driver Assist & Collision Avoidance complaints by model year
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 complaint #11743558 — an unverified report by a vehicle owner.
I purchased my vehicle 4.25. soon after I noticed lights flickering. I was notified shortly after my car was part of the major recall. I brought it in, they said no engine bearings, car is ok, they did not acknowledge the lights because there was no code. I was due for an oil change a few months later and the dealer gave me a 2600.00 estimate for repairs. soon after the FEB light and the lane assist malfunctions. emergency brake malfunctions are DANGEROUS AND UNSAFE .I have made numerous calls to infiniti in the meantime to initiate a buy back. I take the car to Infiniti, now i have. 4376.00 estimate.I have only had this vehicle 13 months. it was a CPO. They assume no responsibility and refuse to buy back. There are numerous complaints with the 2021 qx50 all are the same. This vehicle is not reliable, this company is not reputable. something needs to be done. my car has visited the dealer 3xs and everytime , more money. they know this is a problem- I am now stuck in a vehicle that was sold knowing it was not reliable or safe
NHTSA complaint #11738125 — an unverified report by a vehicle owner.
I purchased my vehicle 4.25. soon after I noticed lights flickering. I was notified shortly after my car was part of the major recall. I brought it in, they said no engine bearings, car is ok, they did not acknowledge the lights because there was no code. I was due for an oil change a few months later and the dealer gave me a 2600.00 estimate for repairs. soon after the FEB light and the lane assist malfunctions. emergency brake malfunctions are DANGEROUS AND UNSAFE .I have made numerous calls to infiniti in the meantime to initiate a buy back. I take the car to Infiniti, now i have. 4376.00 estimate.I have only had this vehicle 13 months. it was a CPO. They assume no responsibility and refuse to buy back. There are numerous complaints with the 2021 qx50 all are the same. This vehicle is not reliable, this company is not reputable. something needs to be done. my car has visited the dealer 3xs and everytime , more money. they know this is a problem- I am now stuck in a vehicle that was sold knowing it was not reliable or safe
NHTSA complaint #11738125 — an unverified report by a vehicle owner.
Good morning, I am writing to formally escalate a serious and unresolved safety concern involving my vehicle and to follow up on my existing case (Case #XXX). On April 22, 2026, while driving on the highway at approximately 55 mph, my vehicle suddenly performed a hard stop as if it detected an imminent collision. At the time, there were no visible obstructions or vehicles directly in front of me that would have warranted automatic emergency braking. This is a repeat issue. A nearly identical incident occurred on August 8, 2025, which was previously reported. Despite that report, the problem remains unresolved and continues to present a significant safety risk. These unexpected braking events create a hazardous driving condition with a clear risk of rear-end collision, particularly at highway speeds. Based on the pattern and circumstances, this strongly suggests a false activation of the automatic emergency braking system or a related safety system malfunction. Given the repeated nature of this issue and the potential safety implications, I am formally requesting: * Immediate escalation of this case to the appropriate engineering or safety review team * A full investigation as a potential safety defect * Identification of any related technical service bulletins, recalls, or known system issues * A clear plan and timeline for diagnosis and resolution at an authorized INFINITI dealership * Confirmation of whether reimbursement or other corrective action will be considered given the ongoing safety risk and repeated service attempts Please confirm receipt of this escalation in writing, along with next steps and assigned case handling details. I expect timely and serious attention to this matter given the safety risk involved. Sincerely, XXX XXX
NHTSA complaint #11733234 — an unverified report by a vehicle owner.
Car experienced sudden braking on roadway upon entering a covered bridge. Red screen on dash and beeping. Foot on gas but not moving forward - Almost causing a crash and immediate risk of injury or death. Bringing vehicle into Infiniti dealer for service to see if there are diagnostics they can run to determine the cause of the event.
NHTSA complaint #11711663 — an unverified report by a vehicle owner.
While driving on the highway and using the hands free feature on iPhone, I said, Hey Siri, and somehow it made the automatic braking on my 2019 Infiniti Qx50 engage unexpectedly. This is not the first time it has engaged unexpectedly and there are also instances when the sensors engage without anything nearby.
NHTSA complaint #11707903 — an unverified report by a vehicle owner.
The contact owns a 2021 Infiniti QX50. The contact stated that while driving 70 MPH, the vehicle experienced phantom braking. There was an unknown message displayed on the instrument panel. The failure had occurred twice. The vehicle was taken to the dealer, who informed the contact that the failure was a known issue; however, there was no repair available. The vehicle was not repaired. The contact stated that the windshield had previously been replaced, but was installed incorrectly, which could have caused the failure. The manufacturer was not made aware of the failure. The failure mileage was approximately 62,000. The VIN was not available.
NHTSA complaint #11706548 — an unverified report by a vehicle owner.
The contact owns a 2019 Infiniti QX50. The contact received notification of NHTSA Campaign Number: 25V437000 (ENGINE AND ENGINE COOLING). However, the part to do the recall repair was not yet available. The contact stated that while driving at an undisclosed speed, there was an abnormal knocking sound coming from the engine. Most recently, while stopped at a traffic light or stop sign, the automatic emergency braking system indicated that the vehicle in front was too close, even though the vehicle was at a safe distance. Several unknown warning lights were illuminated. The local dealer was not contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was not made aware of the issue. The failure mileage was unknown.
NHTSA complaint #11697652 — an unverified report by a vehicle owner.
I received the recall notice approximately 2 weeks ago, the notice state “parts are anticipated to be available beginning in Q4 2025” so I did not schedule for an inspection. This morning, 09/16/2025, I was unable to accelerate after being stopped at a traffic light. I was able to get to a parking lot to have my car towed to an Infiniti Dealership/service center for $260 at their recommended tow provider. After calling the service department to inform them of my vehicle arrival, I requested they run diagnostics for the recall I had received regarding my engine. I received a call shortly after they received my vehicle informing me the diagnostics test would be $250. I agreed and after several calls with no answers I get informed my engine has failed, it is not due to the recall and my cost will be $12,100 for replacement of my engine. I was later informed they had not investigated the recall at all and I would need to sign forms for this. I feel Infiniti of Orlando is not willing to honor the recall repair and looking to take my money for the $12,100 engine replacement.
NHTSA complaint #11687724 — an unverified report by a vehicle owner.
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 complaint #11683175 — an unverified report by a vehicle owner.
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 complaint #11683175 — an unverified report by a vehicle owner.
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.
NHTSA complaint #11680672 — an unverified report by a vehicle owner.
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.
NHTSA complaint #11677355 — an unverified report by a vehicle owner.
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.
NHTSA complaint #11672369 — an unverified report by a vehicle owner.
The contact owns a 2020 Infinity QX50. The contact stated that while driving on the highway at 70 MPH, the vehicle started making an abnormal sound, and the vehicle stopped unintendedly. The contact was grateful that she was not involved in an accident because there was traffic nearby. The contact was able to continue driving the vehicle. No warning lights were illuminated. The vehicle was taken to a local dealer to be diagnosed; however, a cause for the failure was not found. Additionally, the contact stated that the instrument indicated that there was a vehicle nearby erroneously. The contact considered that the failure was caused by a glitch. The manufacturer was not notified of the failure. The approximate failure mileage was 30,000.
NHTSA complaint #11634479 — an unverified report by a vehicle owner.
Multiple electronic and sensor issues with the display screens and infotainment center. Time/time zone change from 12-hour format to military time off and on sometimes multiple times a day. Dash board routinely goes black and not displaying any information. HUD proximity alerts continually go off/flashing when no vehicles are around, tagging the same areas on a specific street that was empty. The sensor system engages the braking system after a faulty proximity alert or a vehicle is outside the normal range. Navigation system map blacking out Inability to disconnect Bluetooth calls using the steering wheel end button and the end button on the screen. The infotainment screen would not respond to menu button for the audio and climate control nor could you access it through the touchscreen menu. The radio would stop working randomly. I had to go to the dealership to get this corrected it would not restart on its own even if it was left overnight. The audio button also would not work. The car would not recognize the profile connected to the key fob routinely. After service, the car took over 8 minutes to lead the infotainment system. The blind spot warning would not function properly continuously. The car was taken into the dealership multiple times, it was assessed by "engineers" 3 times, and it had a total of 3 infotainment systems in this vehicle with 2 replacements since leasing the vehicle. These issues continue to remain and there seems to be nothing that Infiniti can or will do to fix these issues permanently.
NHTSA complaint #11631446 — an unverified report by a vehicle owner.
1. COLLISION WARNING SENSOR ACTIVATED WHILE DRIVING IN THE #1 LANE( CLOSEST TO THE CEMENT HIGHWAY DIVIDERS) AND AGGRESIVELY BRAKED AND SLOWED WHILE DIVING AT 77 MPH. NOT SAFE!! 2. EVEN THOU I PURPOSELY TURN THE RADIO "OFF" WHEN EXITING MY CAR, UPON ENTERING MY CAR AFTER A SHORT DURATION OF TIME, THE RADIO TURNS "ON" WITHOUT ANY ASSISTANCE BY ME....VERY FRUSTRATING!! VEHICLE HAS BEEN INSPECTED BY THE LOCAL INFINITI DEALERSHIP....THEY'RE CLUELESS AND OF NO ASSISTANCE OR HELP.
NHTSA complaint #11602003 — an unverified report by a vehicle owner.
1. COLLISION WARNING SENSOR ACTIVATED WHILE DRIVING IN THE #1 LANE( CLOSEST TO THE CEMENT HIGHWAY DIVIDERS) AND AGGRESIVELY BRAKED AND SLOWED WHILE DIVING AT 77 MPH. NOT SAFE!! 2. EVEN THOU I PURPOSELY TURN THE RADIO "OFF" WHEN EXITING MY CAR, UPON ENTERING MY CAR AFTER A SHORT DURATION OF TIME, THE RADIO TURNS "ON" WITHOUT ANY ASSISTANCE BY ME....VERY FRUSTRATING!! VEHICLE HAS BEEN INSPECTED BY THE LOCAL INFINITI DEALERSHIP....THEY'RE CLUELESS AND OF NO ASSISTANCE OR HELP.
NHTSA complaint #11602003 — an unverified report by a vehicle owner.
FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL
Equipped with ProPILOT Assist and Intelligent Cruise Control inclusive of Lane Keep assist, traffic sign recognition, and Direct Adaptive Steering. Vehicle has just under 60,000 miles and still under warranty When in ProPILOT Assist/Intelligent Cruise Control, when hands leave the steering wheel, car failed to give a dash visual warning, sensory warning, or did not take control of the vehicle to bring it to a safe stop. This of course is a serious safety issue if the driver becomes incapacitated to the point of not being able to respond to the warnings. The car could obviously go through intersections without stopping or possibly get off course resulting in collision with other vehicles, structures or people. This first appeared on interstate highway travel on a trip to Florida in late November and bought in to Smith Infiniti of Hunstville, AL on [XXX] As of this date, [XXX], it has been in service department for nine (9) weeks with no correction of the failure. The dealer and Nissan technical representatives have attempted on numerous occasions and with numerous parts(some replaced 2 times) to fix. Infiniti Consumer Affairs Case # [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
NHTSA complaint #11568151 — an unverified report by a vehicle owner.