It will stall out when we try to start the vehicle. The battery is still pretty new and there are no check engine lights on. It will stall 2 or 3 times but then start about 5 to 10 minutes later.

- Covington, GA, USA

While driving the vehicle has displayed an intermittent transmission shudder at low speeds when accelerating from a stopped position. This occurs at speeds between 20-40 mph. The shudder can be felt through the floor into the seat and appears as if the transmission is searching for a proper gear. Under hard acceleration/freeway driving the issue does not present itself. The vehicle has been into both my Nissan and infinity dealer. Both technicians who inspected the vehicle confirmed feeling the shudder. Driveline service was performed at Nissan and the ECM received the most current update. Nissan technician advised that this is a known problem with the Armada and that the shudder is due to the computer trying to find the optimum transmission shift points for the best fuel economy. I brought the vehicle to my infinity dealer after learning that the issue is known to exist in the QX56 & QX80 as well as the Armada as the vehicles all share the same components. My service technician drove the vehicle and also confirmed the shudder occurring intermittently under certain driving conditions. I requested that they search for the most current update which would be the "E" update, unfortunately this update only applies to models prior to 2018. Service tech advised me to continue to drive the vehicle normally as this is not a mechanical issue, but a software issue. He also confirmed that Nissan / infinity are well aware of the issue and have done little to nothing to provide a tsb, computer update, or permanent solution. He further advised that a transmission replacement, rebuild, or major servicing would not resolve the issue as it is software related. It is deemed very common. This is unacceptable in a $65,000 vehicle. Nissan needs to resolve this issue instead of having dealers advising owners this is normal. My concern is a transmission failure while driving.

- Gainesville, VA, USA

Transmission will not shift gears properly, causing vehicle to stall in traffic this is the second time this has happened with this vehicle, 1st time Nissan replaces transmission and now this happens again

- Williamston, SC, USA

On 5 separate occasions 2 on the same trip, whn traveling down interstate vehicle will not pull, like its stuck in a gear and will not shift. Happens around 80 mph. Creating a dangerous situation when vehicle will not speed up and slows down from 80 mph to 65 and will not gain any speed, this has almost caused a wreck 3 times all on the interstate. This vehicle has been to dealer 3 times for same issue, 1st time nothing found per them, second time replaced transmission valve body, 3rd time replaced transmission. Still not repaired

- Williamston, SC, USA

The engine loses power suddenly and unexpectedly (check engine light turns on). With the loss of power, vehicle loses speed and acceleration. This situation has happened on four different occasions. In all cases the loss of power happened while driving, three of the times while driving on a major highway (I-10). The sudden loss of speed creates a hazardous situation for me, my passengers and any drivers around me. In all cases I have taken my vehicle to the dealership that I bought the car from, mossy Nissan in houston (mn). The first time I had this problem I stopped at a shop close-by and the mechanic at the shop reset the engine and fixed the engine momentarily. Details of each visit are: Event #1: 05/14/19 - a mechanic at a shop near to where the problem happened connected a hand-held device to my vehicle.the device issued a code. The easy fix was to reset the engine, which I agreed-to do since the car was undriveable. The following morning, I took my vehicle to mn service. I detailed the problem and the code given by the hand-held device. Mn was not able to address and fix the issue. Mn suggested that if the problem happened again to drive my vehicle to mn without resetting so that they could diagnose. Event #2: 06/12/19 - same problem again (loss of power, speed and acceleration). I drove the car to mn. Per mn, the problem was a harness that was replaced, and this took care of the problem. Event #3: 08/12/19 - same problem again. I drove the car to mn. Per mn, the problem this time was the ECM computer that was replaced, and this took care of the problem. Event #4: 12/2/19 - same problem again. I drove the car to mn. Per mn, the problem this time was a motor relay that was replaced, and this took care of the problem. This is an unreliable car and even driving short distances is stressful as I am afraid of this recurring problem happening again. Thank you

- Houston, TX, USA