Engine made a pop sound while getting onto the freeway. It started to slow down and then I had to pull over and stop. Took to the mechanic and he explained there was metal shavings in engine. I needed to replace the whole engine.
2019 Infiniti QX50 engine complaints
Page 4 of 4: complaints 71 to 90 of 90, newest first, as owners wrote them.
Car wouldn't start and been in the dealership for 2 weeks now where purchased due to purchasing a extended warrantee they need to look at it first. after several tech asses the problem they say the timing chain jumped a tooth and engine is shot. car has 66000 miles on it. I purchased with 48K so naturally i bought a extended powertrain warrantee that they say wont cover the cost of replacement due to not having the oil changed every 5K miles. I get it done about 8 or 9K due to using synthetic oils that say they are guaranteed for 15-20K miles. No lights or indication engine issues prior to my wife just trying to start the car one morning.
The engine died on me after having the car for less than 2 years. Driving on the highway car just stalled. Had car towed to the mechanic and they said the engine failed. There are plenty of consumer complaints about this model having engine failure while the vehicle is still new and properly maintained.
My engine blow at 50,000 miles and now my VCR actuator has gone bad as well
Engine lost power in normal course of driving. Loud engine noise. Burning oil smell. Mechanic assessed an internal engine component like a broken rod is the cause. Whole engine needs to br replaced at 103k miles.
On February 28, 2025, while driving home form work in my 2019 Infiniti QX50, on a 4 lane highway, I slowed to turn across 2 lanes of oncoming traffic to a side county road. I made it across the highway and the vehicle immediately lost all power. I coasted to a stop on the side of the road. I tried to restart the car and it would not start. I called for a tow and had it taken to the nearest repair shop. The vehicle was inspected and I was informed the engine was blown and would need to be replaced. Prior to this happening, there were no sounds, indicators or warnings of any possible issues. I have owned the vehicle since February 2020. It has always been maintained on schedule (records available). In fact, the vehicle was thoroughly inspected by Infiniti in October of 2024, when I had to have the rear lift gate motor replaced. I was told everything looked good, timing belt had no wear, there were no leaks or concerns. The only recommended services at that time were to change the brake fluid and antifreeze. The vehicle is available for any and all requested inspection.
My Infiniti started making a slight ticking noise. The next day, the car abruptly stalled out while going down the highway causing the vehicle to loose speed and experience engine failure. Luckily, I was able to steer the vehicle to a more manageable location out of traffic. I had lost engine power and steering. After a certified mechanics diagnosis, the engine was declared blown. The bearings and rods have failed and the engine is no longer in repairable condition. The vehicle was serviced per manufacture regularly and there had been no signs of engine failure to that date.
Engine destroyed itself upon acceleration on highway. Variable Compression system malfunctioned, metal shavings found in oil, and engine no longer starts. Check engine light flashed after acceleration, and then engine lost all power. Car coasted to a stop as the engine couldn't make power.
Bought the car from Infiniti and drove it a month,got my first oil change and that sam day my engine lock up first I heard the lifters and then the car shut down as I was trying to pull over ,I was 2,000 miles over my warranty
On January 1, 2025 at about 10:30pm, while driving at about 40 miles per hour the engine made some knocking noises and then suddenly lost power, forcing the car to be pulled over to the side of a dangerous road. When I opened the hood of the car there was a small amount of smoke.  There was no advanced warning that there was a problem with the engine, it just stopped running causing a dangerous situation.  I had the car towed to Infiniti of Massapequa and was told the next day that the car needed a new engine. I was told by the dealer that there was metal in the oil and it appears the main bearing broke. The car is only about 6 years old with approximately 26,200 miles and  has been extremely well maintained with the dealer, including scheduled oil changes with full synthetic oil. I am trying to get Infiniti to cover the full engine replacement cost since the warranty expired about two months ago. However, they still want to charge me $7,560 plus tax. The Infiniti service report is still pending the repair.
Turbo, Rear-Coupler, Engine, Actuator Car was squealing and I was told that the serpentine belt needed to be replaced. Replaced this. Car still squealing and took it back. They replaced the belt, again.. Still squealing, now I am told its the tensioner that needs to be replaced but only Infiniti can do this (belt done at Firestone). At Infiniti - they look at the car and the tensioner is fine. But my turbo is blown. How? So, they replace the turbo and then say the rear coupler needs to be replaced. Repairs done and Infiniti said all fluids are good, everything is great. However, I might see slight smoke and a burning smell for 100-150 miles as theres a thin layer of oil on the turbo that will burn off. Oil change isnt due for 5k miles and I checked before my short road trip - all is good. Past the 100-150 miles and the car is SMOKING and SMELLS OF BURNING... Call infiniti, this is normal it will go away. Check fluids again, as no lights on the dashboard and oil is fine. Come back to get my car, check the ground as I always do and no oil/fluid and proceed home. 10 mins from my house the car WREAKS of burning smell, will not accelerate, no dashboard lights. So, I sit there and let it cool down - check again everything looks good. Try again, car will not go. Fluids look fine - oil, no spikes in temp, and no lights. Next day, no fluids under the car. Car accelerates but lunges me then stops going. Car smells bad, smoke.. go to check the fluids and NO OIL in the car out of no where. Infiniti tows it and it sounded like it was going to blow up. Also, a tink tink tink sound started out of no where. This is dangerous as the vehicle could had started on fire. I still dont know what is going on as Inf. has the car right now. This is a major safety hazard as I found a LOT of reports on this happening to others with this specific model and year. I had NO issues like this until Inf replaced the turbo.. NONE!
The engine stopped working. Allowing me to go no faster than 15 miles an hour. The safety issue is you can no longer drive at the speed that you need to drive. especially if you’re on the highway. The problem has been addressed by a dealer. I needed a whole new engine $13,000. The car at 97,000 miles on it. Was well taken care of. No warning signs prior also did not come up on my display Apparently, there are many other 2019 Infiniti QX 50’s that have this issue
While driving I heard a roaring noise from my engine and my car’s A/C stopped cooling. I have no warning messages from car regarding the engine. The noise only stops once the car is fully powered off. I recorded a video of the noise and alert panel that shows no warnings/issues. Will be contacting my local service department.
About five months ago, while driving on the highway, the care would say it's in Drive, but sounded like it couldn't get out of 1st gear and I'd get high RPMs. Thankfully there was stop-and-go traffic and I didn't have to exit pull off the highway or hit high speeds. I exited at the next exit and, as soon as the car stopped, it wasn't possible to get it into gear. Eventually the car started and I was able to get into gear and drive it using Manual drive mode. Once at the dealership we were told it was a bad VCR and they needed to replace that to get it going. That was around 38,000 miles. This most recent incident, I had just gotten onto the highway when I started to hear a low whiney noise when pressing the accelerator. I only had a few miles till my exit and decided to continue, thinking it might just be debris or something. After exiting, I literally rolled into the gas station because the car, despite being in Drive, was not in gear. The car stalled and I couldn't get it started, or I could get it started, but it refused to go to Neutral to allow me to push it out of the way. Eventually, the car started and I was able to put it into Drive. Thinking it was the same issue, I planned to drive it the 2 miles home. I made it to the first traffic light and the car turned off, leaving the me stranded in the middle lane of the road. I called the police and tow trucks to come help me get the car moved (no one knows how to put the car into an emergency Neutral position including the 2 officers, 4 tow truck drivers and an Infiniti mechanic that was driving by). Eventually the tow truck came and I was able to drop it off at the dealership, who have told me there is "a chunk of bearing material in pan with copper particulates." I'm currently around 40,000 miles.
Engine acceleartion issue. Rpm goes high but car struggle to speed up.. At first it happened when car was at stop light, struggle to move forward.. took to Grubbs infiniti.. At first,dealer could not replicate the issue, but luckily I had taken the video of the issue I had. Than the dealer was finally able to experience the issue themselves and replaced the transmission thinking that was the issue. I took the car after repair and within 3-4 days I had the same issue. This time I was driving in a freeway at 60 mph. When I hit the gas pedal to accelerate faster,the engine RPM went high but instead of speeding up, car felt like slowing down. So i exited the freeway to service road. Once the speed went down to 20mph, it didn't go any higher than that.This time there was a check engine light on I took it back to the dealership .They again could not replicate the issue and just did the ECM software update. I took the car home but after driving less than 20 miles,the car had the same issue. I again took it back to delearship. This time they are replacing something called VCR..Still waiting now
I was driving on the highway and the engine started to make a humming sound I would say. Within the next 3 to 4 miles I started losing forward power, and the noise started to get louder. I was afraid my car was going to die on the highway so I stayed in the far right lane so I could coast into the shoulder if I had to. Thankfully, there was an exit and I was able to get off and pull off onto a street at which point it was a louder knocking sound coming from the engine. I drove another block and the check engine light came on and I was getting less power as I pushed the gas pedal. At that point I parked the car and had it towed for repair. This all happened on October 9, 2023. Later that week, I was told by the dealership that I needed a complete new engine that I had thrown a rod in the engine. The car was only four years old and had 75,000 miles on it. Infiniti did help pay part of the bill, but I still had to pay a good portion of the repair and oddly enough the morning after I drove it home, the car would not start. The car was towed back to the dealership. I needed a new starter. That too has since been repaired. I decided to report this after seeing an article this morning regarding an investigation into Nissan for engine failure problems in my model of car.
Car would not drive upon pressure of the gas pedal placing driver in immediate danger. Driver pulled over multiple times, shifted car into park and turned car off, proceeded to attempt to drive again. After fourth time, the transmission/engine responded. This car was returned to autonation infiniti of tustin two days after purchase, the dealership informed they would place the car back on the lot without inspection, this causes great concern for the safety of any future drivers of the car.
While driving, the vehicle will decline in acceleration and you can not increase acceleration. When turning the vehicle off, the car will proceed at a slow pace. Infiniti dealer told me that I needed to let the car warm up for 30 minutes. The engine makes noise as if the vehicle is in neutral. At times, once taking your foot off the brake pedal to switch the gas, the car will take off from under your foot. While driving, the car will come to a complete halt as if it was approaching a collision. All emergency indicators will go off. The car must be turned off to return to driving. Vehicle has been serviced by infiniti, where diagnostics are ran but does not register an issue. Last servicing, the service man told me to just call consumer affairs, but consumer affairs asked for a claim number which I did not have. On april 28th, the vehicle was making a left turn and flipped upside down to the right. Nothing was hit for the cause of this accident. All airbag deployed but the steering wheel and rear airbag. Steering wheel was locked to the left and could not be moved. Vehicle was declared totaled. Due to covid-19, the vehicle has been driven four times since ny declared a shelter-in.*dt*jb*dt *tr
At stop lights the car will idle roughly like it will stall then it will also jump forward.
Vehicle 2019 infiniti qx50 pure 4dr SUV awd (2.0l 4cyl turbo CVT) review we have this car about 3 months now. Have approximately 3500 miles on it. We experiencing a hug defect on this car. In october, I drove the infinity to the gym in the morning 5:20am. It was less than 1 miles away, parked the car outside about 70 minutes. Went home, parked the car in the garage 2 hours. When I got in the car and started, the fan came on. It was so loud that we can hear it inside the car with all windows up. It was on over 40 minutes from my house to work. Got to work, shut off the engine, restarted the car, the fan immediately came back on. This happened 4 times now. We do believe something is not right. Took it back to the dealer, they cannot fix it, said it is per design, not a defect. Bought this as a luxury car, not luxury at all. Now, I am worrying about the safety of myself and my passengers. Not sure when or if the engineer is going to die on the highway. If anyone has the same problem please report it. We are at a loss regarding what to do next. Would not recommend to buy, there is still a lot of problems on this vehicle to work out.
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