2023 Nissan Altima Complaints

While traveling at highway speed, the vehicle suddenly began slowing down. Pressing the accelerator caused the engine RPM to increase, but the vehicle would not accelerate. I was forced to pull onto the shoulder. After restarting the vehicle, it would no longer move in either forward or reverse and had to be towed.

I was driving down the freeway at about 70 miles an hour. When a warning came up, saying engine malfunction power reduced, the car then started the shaking a bit and not getting any power. Smoke started pouring out of the hood. I then pulled over open the hood. It was then on fire(small).I put it out with some water. And then the car was unable to start. I then towed it to my house and i'm waiting here on inspection.

​Reporting a severe hydraulic/mechanical braking defect on a 2023 Nissan Altima with only 26,820 miles. Vehicle experiences persistent 'spongy' brake pedal feel, premature metal-on-metal rotor gouging, and severely darkened/degraded brake fluid, indicating a systemic hydraulic component failure or electronic brake-dragging defect. This is a severe safety hazard causing unpredictable stopping distances. ​Authorized dealer (Coral Springs Nissan) refused warranty coverage prior to the May 21, 2023 expiration date and attempted to extort a signed liability/warranty waiver under duress to release my vehicle, which has been documented in writing on the service order and on video footage. ***Manufacturer is actively concealing this safety defect to avoid a mandatory safety recall. I own an identical second 2023 Altima with no such issues, proving a manufacturing defect on this vehicle. I paid $63k for both cars brand new. The only difference is the color. This issue began 2023 just five...

During a traffic incident on March 26 2026 I was the driver of the 2023 Nissan Altima SL and I suffered unnecessary bodily injury due to the AEB system. I was in a forward collision, the warning indicator did not go off, and the AEB may have went off after the crash unnecessarily causing major damage to my right shoulder tearing one ligament partially, one ligament completely and tearing my rotator cuff and needing reconstruction and two joints anchored. The impact of the AEB jolt went up my wrist and the force through my shoulder to cause that damage is inexplainable since I was at a complete stop and maybe only one car length away from the other car. I hit my face on the steering wheel. Airbags did not deploy. My son in the passenger seat suffered a concussion as did I. The only thing we can find that could cause this amount of damage is if the AEB decelerated after impact unnecessarily and the airbag did not deploy. That means our bodies were already moving through the impact of the...

The engine mounted high pressure fuel pump became loose and unseated because the engine-side mounting threads failed. The pump lifted off its mounting surface, the head of the engine, and oil came out around the top of the engine. This failure caused sudden loss of engine power and created a potential safety hazard because the vehicle could lose power unexpectedly in traffic and there was fluid leakage in the engine compartment near hot engine components. The problem was confirmed by a Nissan dealer. The dealer inspected the vehicle, documented the failed mounting area on the engine head, and submitted a goodwill warranty claim to Nissan, which was denied. Prior to the failure, there were no 18repairs or service in this area from the factory. Symptoms at the time of failure were loss of power and visible oil leakage from the top/right side of the engine. No warning lamps/messages prior to the mechanical failure. Vehicle had 60,845 miles at the time of failure.