What 403 owners told NHTSA about the 2024 Mazda Cx-90-phev

I was parking the car at a low speed (2mph) when it suddenly accelerated with a great speed, jumped the curb in front and moved forward and up a small hill. The car collided with a tree before I was able to stop it. All ADAS features were activated in the car and no alarms sounded prior or during the event, which lasted between 1-2 seconds. The vehicle was inspected by Mazda and deemed safe to continue to operate. The dealer did not find a cause for the malfunction and suggested external influence. The inspection took about 3hrs, which included addressing multiple recalls on the vehicle. At time of incident I have owned the car for about two months and did not experience similar issues, however others did according to my web search. I found reports on popular forums describing sudden acceleration of Mazda CX-90 vehicles.

NHTSA ODI 11614734

The contact owned a 2024 Mazda CX-90. The contact stated that while driving at various speeds, a clunking noise would emit from underneath the engine compartment. The vehicle was taken to a dealer where it was diagnosed that the control arm had failed. The vehicle had been repaired. The contact stated 3 days later while driving approximately 35 -45 MPH, the brake pedal was depressed but failed to respond. In addition, the vehicle was attempted to be veered to the left or right and it failed to drive in either direction. As a result, the vehicle crashed into the rear-ended of the vehicle in front. The air bags deployed. The vehicle was towed and deemed totaled. The contact stated that the other party's vehicle was damaged and towed away. A police report was filed. The contact sustained a left leg, right arm, shoulder, wrist, and neck injuries that required medical attention via hospital. The contact's wife was seated in the passenger seat at the time of the crash and sustained injuries to the right shoulder, wrist, and both the left and right foot's toes that required medical attention via hospital. The contact was unsure of any injuries to the occupants of the other vehicle. A dealer was contacted. The vehicle was not diagnosed or repaired. The contact received notification of NHTSA Campaign Number: 24V349000 (Forward Collision Avoidance) however, the part to do the recall repair was unavailable. The contact stated that the manufacturer exceeded a reasonable amount of time for the recall repair. The manufacturer had been made aware of the failure and opened a case. The failure mileage was 23,209. VIN tool confirms parts not available.

NHTSA ODI 11600530

On 12/09/23, my 2024 Mazda CX-90 PHEV, purchased on 11/11/23, just got out of the driveway to make a left turn around 500 feet from the driveway when there was resistance in turning the steering wheel left, causing vehicle to swerve to the right and hitting the fire hydrant on the side of the road located just around the corner. Both airbags deployed causing extensive damage to the passenger front side of the car. The automatic emergency braking did not engage to avoid collision with the fire hydrant. One of the passengers suffered avascular necrosis of the hip as a result of the accident. The vehicle was towed to a collision center, then towed to the Mazda dealership, but according to the dealership, no inspection report was available in their system as of 03/19/24. The insurance company declared the vehicle a total loss. There were no warning lamps, messages, or other symptoms of the problem prior to the failure.

NHTSA ODI 11578372