2016 Infiniti Q50 Complaints

ENGINE — Filed 06/02/2026

My 2016 Q50 was driving strangely, but no indicator light came on the dashboard. I took the vehicle to the dealer where I purchased it and was told that the engine is dying. No other information was given to me. I called the service advisor asking what in particular was wrong with my car, but he said he wasn't sure. I took issue with the fact that my engine died, and no warning lights what-so-ever showed on the dash. I would only take my car to the dealer for repairs, maintenance and oil changes. I also learned that cars should not go beyond 3,000 miles for an oil change, but for some reason Infiniti oil changes were 10,000 miles in between. I believe this could be a reason the engine died...there was never an oil change indicator light illuminated as well. I feel that Infiniti is responsible for an engine dying on a vehicle with less than 100,000 miles on it.

ELECTRICAL SYSTEM,SERVICE BRAKES,ENGINE — Filed 05/03/2026

Something happened to cause power loss. I checked the recalls and work that was supposed to be performed but didn’t get done like it was supposed to. I need to have it checked now asap! I see 2 engine replacements and also the turbos and 2 of the catalytic converters. The last 2 need replacing as well or it’s not going to be right.

TIRES — Filed 06/05/2026

Had 2 new tires installed on the rear of the car and they both busted at the seam. Shredded the tires and damaged 4 wheels.

VEHICLE SPEED CONTROL — Filed 05/17/2026

OUTPUT SPEED SENSOR on 2016 INFINITI Q50t - Took vehicle in for oil and filter change 2 days ago. I drove the car about 40 miles, without incident. Went back to same place for state inspection yesterday. I drove about 2 miles from the inspection place and park in shopping lot. Went in business to shop for about 30 minutes. Returned to vehicle and drove about 100 yards through the parking lot. The car appeared to lose power and made a jerking movement as if it didn't want to go. I drove out onto a very busy street and we were almost rear ended by other traffic. I pulled up in another parking lot to assess the problem. I could not determine what was causing the car not to pick up speed. I drove to an AutoZone: battery checked out at 90 percent good; no electrical problems noted either. I drove off about 1 block from AutoZone: the CEL came on for the first time. I went back to the AutoZone to get them to check it out. The diagnosis code is P0720: vehicle speed sensor. I went back to the inspection shop the next day and I was told the same code. I took the vehicle to the dealership and I was told that I need to replace the whole transmission. I purchased the vehicle about 8-1/2 years ago; garage kept; only put 60k miles on car since purchase. Car has approx. 108k miles now. This is not only a problem with 2014 -2015. When I purchased the car in 2018, I feel like the dealership should have informed me that this was a problem with Q50s. This is not just an issue with previous years; this is a problem with 2016 as well. This vehicle is very clean/outstanding: no accidents, no body damage, immaculate leather seats, no repairs in 8-1/2 years and all of a sudden this fault code comes up with no previous indication that the transmission was not working properly. There needs to be a RECALL for this vehicle due to this common issue.

ENGINE — Filed 02/19/2026

The vehicle experienced a failure while driving, producing heavy smoke and requiring the car to be stopped immediately. The “Low Oil Pressure – Stop Vehicle” warning light illuminated on 2/19/2026. The vehicle was subsequently taken to an Infiniti dealership for inspection. Upon evaluation, the dealer determined that both turbochargers have failed and are leaking oil. The turbochargers are covered under an existing warranty extension; however, the engine has failed also. The vehicle experienced a catastrophic engine failure at approximately 50,230 miles, after which both the engine and turbochargers were replaced under warranty with the cause listed as undetermined. Both the original and replacement engines have now failed in the same manner, with turbochargers leaking oil and producing visible smoke, indicating a likely recurring defect or unresolved underlying issue. The replacement engine failed after only 40,000 miles, further raising reliability concerns. Infiniti quality actions (P4A05 and P4A06) identify turbocharger oil leakage as a known issue, aligning with the current failure. The dealership has confirmed the turbochargers are leaking oil but will only replace them if a full engine replacement is authorized by me at a cost of $15,556.49.

ELECTRICAL SYSTEM,AIR BAGS,SEAT BELTS — Filed 07/23/2025

* 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 INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

ELECTRICAL SYSTEM — Filed 06/18/2025

I’m reporting a safety issue with my 2016 Infiniti Q50. Last Friday [XXX], my the car wouldn’t crank and there was minimal dashboard power, but the engine wouldn’t start. After receiving a jump, I had the battery replaced assuming it was the issue. However, six days later, while driving, the vehicle suddenly lost all electrical power mid-drive with no warning or dashboard alerts. The engine shut off, the brake pedal became stiff, and I was unable to use any power-operated functions, such as rolling down the windows (98 degree day in Texas) or opening the trunk, which contained my emergency tools. A police officer had to assist and the vehicle was towed. Upon inspection, the issue was traced to corroded battery terminal cables, which were blocking the signal from the new battery and causing the full shutdown. This is a serious safety concern as complete power failure while driving, with no warning, and no manual trunk release for emergencies, could place drivers at significant risk. I’m submitting this for review and potential recall consideration. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

ELECTRICAL SYSTEM — Filed 06/12/2023

Then engine light came on. And the vehicle decline in power. It moves very slow.

ELECTRICAL SYSTEM,ENGINE — Filed 06/12/2023

The engine check light came. I also received a letter from infinti for recall. The power of the vehicle declined.

ENGINE — Filed 12/01/2023

Engine manufactured with porous block causing coolant to mix with oil resulting in bearing failure. Vehicle has less than 60k miles and I have seen numerous reports on Infiniti Q50/Q60 forums with people having the exact same issue. Some vehicles have had multiple engine replacements. Vehicle out of warranty due to age. Have not been able to drive vehicle for over a year and was told I should report issue to the government since Infiniti has not stepped up and done a voluntary recall.

STEERING,ELECTRICAL SYSTEM,FORWARD COLLISION AVOIDANCE — Filed 12/02/2024

Passenger seat light remain on for 4 months the went away. Then the airbag light came on. Took it to Infiniti of Tampa where they supposedly done diagnostics. They cause additional lights to appear on my dashboard to include the steering hard to turn. When I purchased the vehicle in October 2016 I was unaware of any recalls. I found out about a month ago there approximately four recalls for 2016 Infiniti Q50.

STRUCTURE — Filed 11/01/2024

The hood of my vehicle is raised on the upper right side. It was a small opening but now it has gotten bigger. I'm afraid that the entire hood may come off at a high speed. I also have rust spots on the top of my car close to the sunroof. I use Infiniti of the Palm Beaches for all of my services and have reported both concerns and was told it was normal wear and tear. I have owned many cars and never had the problems that I've had with a vehicle.

POWER TRAIN — Filed 09/13/2024

The car has only 50,000 miles and the valve body of the car just burnt out. I’ve done all the mandatory/ recommended maintenance and with the history of the brand I expected better quality of their product. Would greatly appreciate the accountability on this issue and some effort to fix this for the population.

POWER TRAIN,ENGINE — Filed 06/07/2024

The contact owns a 2016 Infiniti Q50. The contact stated upon attempting to drive from a complete stop, the vehicle failed to respond. The contact stated that upon attempting to drive the vehicle 30 minutes later, the vehicle responded as needed. The check engine warning light was illuminated. The vehicle was taken to an independent mechanic, where the vehicle was diagnosed that the valve body had failed. The mechanic determined that the valve body and the entire transmission needed to be replaced. The vehicle was not repaired. An unknown dealer was notified of the failure and charged a fee for the repair. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 77,636. The VIN was not available.

FUEL/PROPULSION SYSTEM — Filed 07/16/2023

My vehicle has been having issues for several months now. I have taken it to Nissan, an auto shop, and Infiniti and no one has been able to find out what’s wrong with it, why it stalls to start on a cold start. Infiniti has had my car for a month now because they believe it’s the fuel pressure sensor and they are waiting on the part, for which they have no estimated time of arrival, but they are not sure is that is what is wrong with the car.

ENGINE — Filed 11/22/2023

Internal engine mechanical issues, infiniti of bridgewater diagnosis. The engine cut off midway while driving on the highway. Vehicle received an engine replacement 1-2 years ago from Infiniti of edison (ray catena) who were shut down after the replacement. There was absolutely no warnings or problems before hand.

POWER TRAIN — Filed 02/13/2023

The contact owns a 2016 Infiniti Q50. The contact stated while driving 35 MPH, the accelerator pedal was depressed, and the vehicle failed to accelerate and stalled. The contact stated that the vehicle was consuming an excessive amount of fuel even when the vehicle was driven a short distance. The contact stated that the rear driver’s and passenger’s side door latches were inoperable and failed to securely lock. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The manufacturer was not made aware of the failure. The failure mileage was approximately 70,000.

ELECTRICAL SYSTEM,SEAT BELTS — Filed 10/24/2023

The contact owns a 2016 Infiniti Q50. The contact stated that the vehicle was taken to the dealer for an oil change. The contact stated while driving to the residence, the RPMs and the speedometer were intermittently dim, and the daytime running lights were intermittently inoperable. Additionally, the contact stated that the front passenger's side seat belt light indicated that the seat belt was not buckled even though the front passenger’s seat was unoccupied. The contact stated that upon buckling the front passenger's side seat belt, the seat belt warning light turned off. The vehicle was taken to the dealer to be diagnosed. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 93,000.

AIR BAGS — Filed 06/12/2023

Airbag sensor light stays on instrument panel due to an issue with passenger airbag sensor under passenger seat.

AIR BAGS — Filed 05/14/2023

The contact owns a 2016 Infiniti Q50. The contact stated that while the vehicle was parked, the air bag warning light illuminated. The contact related the failure to NHTSA Campaign Number: 16V244000 (Air Bags). The vehicle was taken to the dealer, and the contact was informed that the VIN was not included in the recall. The manufacturer was made aware of the failure. The failure mileage was approximately 169,000.

POWER TRAIN,AIR BAGS,LANE DEPARTURE — Filed 04/08/2022

this car is being sold at nice car inc and they have erased codes from car air bags wont deploy if and accident occurs 1 turbo on car doesnt work and the car smokes runs hot the and will shut off or wont Accelerate over 10 miles per hr I was not aware of this until after purchase and i had car checked out that is dangerous and hazardous they also have called using my name pretending to be me and made false insurance claims the car… I could only upload so much but a certified mechanic stated they deleted codes from vehicle and its not listed on carfax they give. They are endangering lives of Americans and scamming insurance companies because the car doesnt have safety features that should work

FUEL SYSTEM, GASOLINE — Filed 03/01/2022

The contact owns the 2016 Infiniti Q50. The contact stated that while driving approximately 40 MPH, the vehicle would shake and decelerate independently. The check engine warning light was illuminated on the instrument panel. The contact diagnosed the failure as a stuck open fuel injector. Additionally, there was a fuel odor present. The vehicle was repaired by the contact. The manufacturer was notified of the failure. The approximate failure mileage was 50,000.

STEERING — Filed 12/11/2021

On 12/11/21 my vehicle had limited turning (left or right) capability. The vehicle has < than 23K miles, was purchased at Bommarito Infiniti, and has been serviced at the same dealership since I purchased it. I bought the vehicle new and drove it over the last 5 years as a back-up vehicle to a Chevy Cruze (w/greater than 180K miles on it and no faulty parts). I did not purchase the extended warranty because it was supposedly a reliable vehicle, based on my prior history/ownership of a 2006 G50. I made timely payments for 5 years, performed all of the required maintenance, and took my car in for all of the Infiniti “recalls.” After the ability to turn failed, I took the vehicle to Bommarito Infiniti for a diagnostic and routine oil change. The steering diagnostic found 3 leaks on the steering rack and pinion., (no oil was visible on the ground). I did not have any warning lights for low steering fluid or service required indicators, but the dealership stated the power steering fluid was low. I contacted Infiniti Consumer Affairs department for review of the faulty part, considering that I had less than 23k miles on the vehicle. Stewart at Infiniti Consumer Affairs stated that the claim for repair assistance was denied due to the vehicle being out of warranty and the "lack of service history" with Bommarito Infiniti. When I questioned him about defining/explaining what he meant by the lack of history, he could not explain his statement. He placed me on hold, and then returned only to reiterate his previous statement. I then informed him and verified with the dealership that I did not deny any required repair or service that was recommended/required. The dealership also stated that the rack and pinion that was installed on my Q50 had to be a faulty part because this is the 1st time that a 2016 Q50 with less than 36k miles has ever needed this part replaced. This is a safety issue and a crash waiting to happen!

BACK OVER PREVENTION — Filed 06/15/2020

The contact owns a 2016 Infiniti Q50. The contact stated that while driving at various speeds, the center display control unit would glitch inadvertently and constantly restart, which led to the rearview camera and GPS failure. The vehicle was taken to the dealer who diagnosed that the display control unit failed and needed to be replaced. The contact stated that the center display control unit had completely failed. The contact referenced NHTSA Campaign Number: 21V599000 (Back Over Prevention). The manufacturer was notified of the failure and advised the contact that they could not assist as the vehicle was out of warranty. The vehicle was not repaired. The approximate failure mileage was 52,000.

UNKNOWN OR OTHER — Filed 09/22/2018

WHILE ACCELERATING, THE DRIVER SWITCHED THE VEHICLE FROM MANUAL SHIFT MODE TO AUTOMATIC. THE DRIVER NOTED A SIGNIFICANT INCREASE IN MEASURED RPM VIA THE TACHOMETER AS IF THE VEHICLE "JUMPED INTO A LOWER GEAR OR FAILED TO FIND A GEAR." THE DRIVER NOTED THAT THE REAR TIRES LOST TRACTION, CAUSING THE CAR TO TURN TOWARDS THE LEFT. SHORTLY AFTER, THE DRIVER LOST CONTROL OF THE VEHICLE AND CRASHED. *DT CONSUMER STATED HE WAS TURNING INTO THE ENTRANCE RAMP WHEN THE VEHICLE FISH TAILED CAUSING IT TO FLIP. *JB