2017 Infiniti Q50: sudden loss of power

Filed Nov 19, 2025 · Engine · GA

My vehicle has been stalling and burning/leaking oil internally for some time now with white smoke coming from the rear. Well Infiniti sent a post card and stated that the emission warranty is extended for 120,000 miles which my vehicle has had the issue for some time and it was already over 120k miles at the time of the loss. The issue Infiniti reported in their postcard is, you may experience issue with the turbocharger, Overtime there is a possibility for the turbocharger thrust bearing to wear and leak oil internally. The most likely conditions you will experience are excessive white smoke from the exhaust, MIL-On an in rare cases reduced engine power or damage to the internal components. My vehicle is experiencing all these issues reported and the company, Infiniti, knows this is an issue and did not issue a recall the extended warranty instead, most people will not qualify for which will require people to thousand of dollars replacing the turbocharger assembly and engine control model. I got a quote and was told 8000 dollars unfortunately I cannot have repairs done. I believe it was January 2025 when the post card came from Infiniti identifying the issue

Filed Feb 23, 2024 · Engine · CA

The engine in this car needs to be replaced. The main bearing is failing, head gasket blew, and coolant has leaked into the engine. About August 30, 2023 I had a sudden coolant loss followed by temperature spike. If the engine had seized while driving, it could have caused a loss of power and locked up the drive train. After sitting while i tried to determine the coolant loss and temp spike, i made arrangements with a local infiniti dealer about jan 9 with a drop off date of jan 22 or 23. The dealer has confirmed the bearing, oil, coolant issue. There were no warning lights or check engine lights before the issue occurred.

Filed Apr 26, 2023 · GA

I have repeated incidents of the car losing power while driving. The first time this happened was in 2018. Under the manufacture warranty both air sensors were replaced. The incident occured again in 2021. I had it towed to a dealership in Jacksonville. They were unable to repeat the failure.In 2022 it occured again. I drove the car to a Nissan dealership in Brunswick Ga. They reset some codes and the car drove ok. Today while driving I lost power again. I pulled into a parking lot and turned the car off. Once I restarted the car it drove ok. This has also occured on other occasions and seem to self correct if the car is turned off and restarted. There is no rhyme or reason to when this problem will present itself and could cause severe harm if driving in heavy traffic on the interstate.

Filed Aug 28, 2020 · Engine · 99,000 miles · LA

Camshaft pos sensor went out during driving. Car lost power and jerked. Had car looked at by independent service station and heard knocking. Brought car to dealership and was determined to have a blown engine. Was specifically told that the turbos were 'eating' the oil and not allowing oil to flow to lower end of motor. Which caused failure to main bearing in cylinder 3. Car needs a new engine. Service department has seen this before with same year make and model of vehicle

Filed Mar 13, 2019 · Acceleration, Brakes · 4,710 miles · OH

I purchased my 2017 infiniti q50 as a certified dealer owned vehicle with 4710 miles on it from airport infiniti on 12/31/2018. Since taking possession of the car, I have had three separate instances where my car lost power during acceleration, in which one of the instances nearly caused me to be hit by a semi-truck when crossing a divided highway. I have provided videos to the manufacture but they have refused to take action because the vehicle does not set any dtc codes. When this condition happens my 3.0t q50 accelerates extremely slow even with 100% throttle. The net result is that when I intend to cross a divided highway, I experience a 1-1.5 second delay from the time I push down the accelerator to when the car begins to move, then the acceleration from 0-15mph can take upwards of 5-6 seconds. The resulting feeling is a car that rolls into a dangerous intersection and exhibits stall like conditions. Only once did the car set dtc codes during this instance. The codes set were b130d, c1a16 and po340. These codes set the first instance, but have not set during the past two occurrences of the same acceleration issue. These instances are completely random which make them extremely dangerous. For instance, the car will be driving completely normal, I will stop and an intersection and then when I go to turn out into the intersection, I go into this stall condition without warning. The dealership has had the car 4 separate times and each time they have refused to fix anything on the car, despite having a video of the occurrence and confirming that the acceleration was entirely abnormal. I have no choice but to drive this car if infiniti refuses to fix it, but feel it is likely that it will cause injury or death to me and my family if I drive it. I have attached a summary of the daily log I have been keeping since I purchases the car on 12/31/2018.

Filed Oct 2, 2017 · Electrical, Fuel system · AZ

Tl* the contact owns a 2017 infiniti q50. The contact stated that the vehicle lost power while stopped at a light. The vehicle restarted after one attempt. The contact took the vehicle to infiniti on camelback (1250 e camelback rd, phoenix, az 85014) where it was serviced per the federal safety agency campaign number: 17v476000 (fuel system, gasoline, electrical system). The remedy failed to repair the vehicle. The contact emailed the manufacturer, but had not received a response. The failure mileage and VIN were unknown.