*Median odometer reading when the problem happened, where owners gave one. One complaint can name several problem areas.
Engine
In August 2026, while driving, the vehicle suddenly lost acceleration and engine power and would only travel at a very slow speed. The check engine light came on. The driver had to safely stop, turn the engine off, and restart it. After restarting, the vehicle temporarily regained acceleration and normal speed. This problem has occurred more than once and creates a serious safety risk in traffic, especially when merging or crossing intersections. An INFINITI dealer inspected the vehicle and advised that the problem may involve the turbocharger system, with repairs estimated at approximately $4,000. INFINITI Consumer Affairs was contacted about the loss of acceleration but declined financial…
Aug 12, 2026Engine and engine cooling
The contact owns a 2021 Infiniti Q50. The contact stated that while driving approximately 70 - 80 MPH and attempting to accelerate, the vehicle would accelerate but failed to exceed 10 MPH. The accelerator pedal had to be depressed to the floorboard for the vehicle to accelerate; however, the vehicle still failed to exceed 10 MPH. During the failure, the check engine warning light was temporarily illuminated. The contact intended to have the vehicle towed to the dealer, which was called and informed of the issue. The dealer informed the contact that the VIN was not included in NHTSA Campaign Number: 21V234000 (Engine and Engine Cooling). The failure mileage was approximately 82,000.
Sep 5, 2026 · 82,000 milesWheels › Rim
The contact owns a 2021 Infinity Q50. The contact stated that the vehicle was recently purchased from a dealer. When the vehicle was purchased, the tires were replaced. The vehicle was later taken to the dealer for maintenance, and while at the dealer, the contact was informed that there were nails in the tires and that the tires needed to be replaced. The contact checked the sticker on the door panel for the tire information. The contact stated that the sticker indicated that the wheels were 18-inch rims. The vehicle was taken to the dealer to install the new tires, and the contact was informed that the rims on the vehicle were 17-inch rims. The vehicle was purchased at a CarMax dealer,…
Feb 4, 2026 · 44,000 milesAir bags
The contact owns a 2021 Infiniti Q50. The contact stated that while driving at undisclosed speeds, the air bag warning light illuminated. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The contact called an independent mechanic, but no assistance was provided. The manufacturer was not contacted. The failure mileage was approximately 35,000.
Jul 26, 2024 · 35,000 milesStructure › Body
I was driving home on the Veterans Expressway in Tampa traveling about 65 mph when a sound like a gunshot almost caused me to lose control as I swerved out of fear - thankfully no other vehicles were nearby. I pulled over at the next exit in a public place and discovered my sunroof class had a piece of glass missing and it looked like it was pushed upwards. I knew this is not normal and never had I had this happen in any other car I owned with a sunroof. I had very small slivers of glass inside the car which cut my fingers because they were not visible, along with the tempered glass. Since it was going to rain, I drove home and put in garage to avoid water damage. I called the dealership in…
Jan 5, 2024Vehicle speed controlCrash
I purchased a new 2021 Infiniti Q50 from Infiniti of Cool Springs on September 28, 2020. There was an incident on January 13, 2022 due to a manufacturer defect that caused my car to accelerate on itâs own. I was parked at a car wash to vacuum my vehicle. I had my foot on the brake to move the gear shift into park when my car rapidly accelerated which caused me to crash through a metal fence that separated the car wash from the adjacent property. I have an added safety feature on my vehicle to prevent a forward collision with emergency breaking that also didnât implement. There wasnât any warnings, indications or symptoms beforehand. I had my Infiniti for 16 months with only 20,766…
Jan 13, 2022
Owner complaints are submitted to NHTSA by the public and are not verified. Shown as filed (NHTSA removes personal details); long reports are shortened.