Infiniti Q50 Complaints

514 consumer complaints on file.

#11691027October 2, 2025
AIR BAGS
Airbag light turn on, on my dashboard, I checked it with a professional OBD2 scanner and shows a code which indicates a fault in the Occupant Detection System (ODS), which the scanner says it is very common for my vehicle. This puts my passengers at risk due to an airbag system fault. My vehicle has not been in an accident, nor has my passenger seat been messed with. I have spoken to other individuals with the same vehicle, also checked the forums for my specific vehicle and almost all of them have the same issue with the ODS, with no recalls or warranty resolution from the dealership. This is a common issue. It is concerning because there is a pattern of the ODS being faulty by no fault of our own but no resolution or recall.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11689862September 26, 2025
STEERING
Was making a left turn when the steering stopped working and the motor lost power, the adaptive steering quit working after approximately 15 mins. I started the car and it was working. Went a half mile made a right turn and it went out again. Shut off the motor tried to start it and could not. 20 mins later it started and has been working since. Dealer couldn't find the problem and wouldn't fix it, they also said that their were no recalls but I know that is not true. Infiniti had a law suit brought against them for the adaptive steering issue. If they fixed it why doesn't it work right.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11686782September 12, 2025
STEERING
Unknown. Started to make left turn steering made loud banging noise then lost all power. Stepped on gas pedal would not go lost steering control and coasted to a stop. Adaptive steering went out. Almost got hit by on coming traffic.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11686172September 10, 2025
AIR BAGS, ELECTRICAL SYSTEM, SEAT BELTS
* the passenger airbag light came on July 2025. I was not in a accident the light just came on. * 7/29/2025 I took my car in for service at Infinity of Las Vegas (the only Infinity dealership in Las Vegas) I asked to check why the airbag light was on. I was told the occupant sensor unit was abnormal. Sensor and module internally shorted out. Recommend to replace passenger front seat frame assembly (only available as a 1 piece both sensor and module internally shorted seat frame Assy). @ $ 8678.76. Because it’s a different seat from the original seat, I would have to also replace the seat belt. @ 116.87. * It is not recommended to drive a car with the air bag light on. This car is my only source of transportation. * on August 4, 2025 I took my car to Auto Dynamic Services and they suggested initial repair was to replace the Occupant Detection Module. The part was ordered from Nissan, when they received the part it was an updated part design which was slightly larger with more pins than the original part and could not be used on my car. They reordered the part from another Nissan retailer ensuring it matched the original part for my car. Now it’s Aug. 27th, 2025. Auto Dynamic received the correct replacement module. Unfortunately the part was replaced and the airbag light came on again. They also stated the seat would have to be replaced in order for the airbag light to go off. For around the same price. It cost me 1800.00 to find this out. * I do not have money to resolve this issue especially if the driver airbag errors next, I am fearful of the unknown driving around with the airbag light on. If in an accident possibly not being covered because I was driving with a know issue. Or the bags just deploying randomly. * On [XXX] I traded a perfect running car in, I did not receive much on the trade as the airbag light is on. I can drive safely and register the car when required * it looks like there was a recall but the Q50 2.0 turbo was not included. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INF
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11686256September 10, 2025
AIR BAGS, FUEL/PROPULSION SYSTEM, ENGINE
Within one month of purchase, the airbag warning light illuminated and has remained on continuously. A separate dealership later confirmed the airbag system is defective and may not deploy in an accident. This is a serious safety defect that was not disclosed to me at the time of sale. Additional Issues: •On July 14, 2025, I dropped the car off for prolonged starting issues. I was told the vehicle had six faulty fuel pumps/injectors. •I have not had possession of the car since July 14. •On August 30, 2025, I received an email from Nissan of Orange Park stating the car was “completed and ready.” When I called the next day, I was told the car was not at Nissan at all, but at Infiniti, with no clear repair status or timeline. Concern: This is a federal safety defect. I request NHTSA’s review and investigation into Infiniti/Nissan’s handling of defective airbag systems in this vehicle and the misleading communication surrounding repairs.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11685053September 4, 2025
POWER TRAIN
I am the owner of a 2017 INFINITI Q50 purchased in 2019. My vehicle has suffered three separate turbocharger failures in four years: 2021 (~75,000 miles): turbocharger failure; replaced under my extended warranty (~$6,000 authorization). 2023 (~98,000 miles): turbocharger failure; replaced again under extended warranty (~$6,000 authorization). 2025 (143,000 miles): diagnostic confirms another turbocharger failure; quoted $8,900 out of pocket because my extended warranty has expired. These failures follow the classic symptoms of excessive exhaust smoke and MIL illumination that INFINITI has explicitly linked to premature turbocharger bearing wear in the February 2025 “limited emission warranty extension” for 2016–2018 Q50 and 2017–2018 Q60 vehicles. INFINITI’s bulletin states the company “is conducting a warranty extension to Full Useful Life (FUL) of 10 years or 120,000 miles” for select turbo assemblies where white smoke/oil-leak with MIL-on requires turbo replacement, and explains the reason as “possibility that the turbocharger bearing may leak engine oil internally due to premature wear.” INFINITI’s public owner-facing campaign page likewise describes this extension and its terms (10 years/120,000 miles), including reimbursement for qualifying prior repairs. Infiniti Assist While my current mileage exceeds 120,000 miles, my car has required two full turbo replacements before 100,000 miles and now requires a third at 143,000 miles. This pattern evidences a latent defect present well within the extension period and is consistent with the failure mode INFINITI acknowledges. They have offered no help and only assume 50% responsibility when they 100% have manufactured defective and poorly labored parts.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11684079August 30, 2025
POWER TRAIN
Transmission valve body failed while driving which caused shifts to be limited. It could have caused an inability to shift at all, which is a safety issue. This issue has been inspected and confirmed by an independent shop. No warning signs were present before the failure. Furthermore, this issue is well known to Infiniti. It’s caused by breakdown of the transmission fluid overtime, causing a reduction in the cooling capacity of the fluid. But Infiniti says that the fluid should be lifetime. This overheating causes the TCM on the valve body to fail. If it failed while I was going at a highway speed I could have been injured.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11683201August 26, 2025
VEHICLE SPEED CONTROL, ELECTRICAL SYSTEM, POWER TRAIN
The car just slowed down super fast on freeway almost got rear ended. It would not go past 3rd gear. Poor acceleration. Could have caused a huge accident. I got it diagnosed and they said it is valve body/speed sensor/tcm and they said this is a COMMON problem for 2015 Q50. I replaced this part 2 years ago and here we go again. Shop diagnosed and said this tcm (transmission control module which is in the transmission) but they have to change whole transmission. Everything happened all the sudden then check engine light came on.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11682784August 25, 2025
ELECTRICAL SYSTEM
I went into Infiniti of Massapequa for an oil change I was told that my car has a recall for the ecm and by law they’re required to fix the recall in doing that it instantly caused a check engine light and are asking me to pay out of pocket for the oil pump adapter wire harness code P06DA repairs caused by the updated ecm I don’t feel that it is fair that I have to pay for anything due to issues from the dealers update of the ecm
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11682522August 22, 2025
ENGINE
Recently, the turbochargers on my vehicle failed prematurely and had to be replaced. Shortly after this repair, and with the vehicle still under 60,000 miles, the engine exploded and failed while driving. This incident posed a severe safety hazard not only to me but to other drivers and pedestrians as I lost propulsion and had to swerve to the shoulder to avoid oncoming traffic. Fortunately, no one was injured, but the sudden failure could have led to a much worse outcome as not only did it fail but hot oil and coolant both poured out of the hole in the engine creating a hazard. I believe this failure is not only unacceptable for a vehicle with such relatively low mileage, but it may indicate a systemic or design flaw, particularly if turbo and engine failure is a recurring issue among other owners of this make and model. I am aware of Infiniti’s current engine recall for select vehicles for premature engine failure and would like to know should this be extended to Q50 model.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11682053August 21, 2025
ENGINE
While driving, my vehicle suddenly shut off without warning. After restarting, the vehicle would not accelerate over 40 miles per hour. I had the vehicle inspected by the dealership, and they informed me that the engine oil filter contained metal debris. The dealership explained that the presence of metallic particles in the filter could indicate internal engine wear or damage, and they recommended a full engine replacement at a cost of approximately $20,000. At this time, I have not been shown the filter or the debris, but I was advised that this condition may require further diagnosis and possible engine repair or replacement.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11681558August 19, 2025
ELECTRICAL SYSTEM
The contact owns a 2014 Infiniti Q50. The contact stated that while driving at various speeds, the message "No Key Detected" was displayed. The contact waved the key fob around the START/STOP button, and the message ceased. The contact stated that the light around the START/STOP button was orange, but was green before the failure. One day, while driving the vehicle, the engine failed to shut off after shifting into park(P) and pressing the START/STOP button. The contact made several attempts to turn off the vehicle. The message to "Visit the Dealer" was displayed. The vehicle was taken to several independent mechanics before finding a mechanic who was able to turn off the vehicle by removing the starter fuse. The mechanic advised the contact to tow the vehicle to the dealer. The dealer performed a water test and discovered that there was a leak in the sunroof, which had caused the failure. The mechanic discovered that water had leaked through the firewall in the body control module (BCM), causing the failure. The contact was provided with an estimate, and the vehicle was repaired. The contact stated that after the repair, while the vehicle was idling, the vehicle intermittently jerked. There was no warning light illuminated. The manufacturer was not notified of the failure. The failure mileage was approximately 150,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11681634August 19, 2025
VEHICLE SPEED CONTROL, FUEL/PROPULSION SYSTEM, ENGINE
My car wouldnt start and when it did, it would start shaking and every time I accelerate, The speed wasnt going any faster but only the RPMs were
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11681641August 19, 2025
UNKNOWN OR OTHER, ELECTRICAL SYSTEM, VEHICLE SPEED CONTROL
P07200 code came up, transmission is no good because of a cheap sensor that's impossible to fix. seems to be very common and very inconvenient
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11681660August 19, 2025
POWER TRAIN, VEHICLE SPEED CONTROL
i’m reporting issues with the valve body on a 2015 Q50. I have had to replace the valve body already at cost of $1700. Many others have had same issue as this is a common defect with the TMC part. This needs to be addressed as a recall.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11676585July 28, 2025
ENGINE, ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER
The contact owns a 2019 Infiniti Q50. The contact stated that while driving at an undisclosed speed, the check engine warning light illuminated, with an abnormal knocking sound coming from the vehicle. The vehicle was turned off; however, while attempting to restart the vehicle, the abnormal knocking sound persisted. The vehicle was towed to the dealer, where it was diagnosed with engine and turbocharger failure. The contact was informed that the engine and the turbochargers needed to be replaced. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 67,500.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11674949July 21, 2025
STEERING
Adaptive steering clicks and looses control. Steering wheel jerks back when self aligning. There was a recall for this I believe in June 2016. For 2015 infinity Q50’s but my VIN says that it wasn’t recalled but is the exact description of what is happening.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11673542July 14, 2025
POWER TRAIN
I received a check engine light will driving which is now indicated as code P0720 and P0500. The car refused to shift past 3rd gear and began to sputter and would not allow me to go past 25mph disrupting the flow of traffic.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11672651July 11, 2025
UNKNOWN OR OTHER
Both rear doors will not open from inside or outside.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11672262July 9, 2025
POWER TRAIN, ENGINE
The contact owns a 2015 Infiniti Q50. The contact stated while driving 40 MPH, the accelerator was depressed; however, the vehicle failed to shift into gear properly, with the check engine warning light illuminated. The vehicle was able to be restarted. The vehicle was taken to an independent mechanic, where it was diagnosed that the transmission valve body had failed, and the transmission needed to be replaced. The vehicle was not repaired. The dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was made aware of the failure. The approximate failure mileage was 94,150.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

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