2024 MAZDA CX-90 PLUG-IN HYBRID Complaints

I am reporting serious safety concerns with my Mazda CX-90 PHEV (leased, manufactured September 2023). These issues create unacceptable risk to occupants and other road users. Multiple Severe Recalls: My vehicle has had at least four major recalls: • 6323J – Engine & Motor Shutdown: Complete loss of propulsion without warning. • 7024J – ECU Software Failures: Loss of drive power and restart failures. • 24V817000 – EV Mode Power Loss: Sudden propulsion loss in EV mode. • 6724E – Sudden Braking: Automatic braking without cause. These defects could lead to crashes or fatalities. Hybrid System Malfunctions: Two recent “Hybrid System Malfunction” warnings required dealer visits. These failures could cause the car to shut off while driving—even at highway speeds. • First incident: Battery-related issue. • Second incident: Triggered by a loud noise during startup, impacting the AVAS system. A loud noise should never disable a family vehicle, indicating a design flaw. Charging Safety Issues: Charging via a standard outlet caused flickering lights and breaker buzzing in my house. A licensed electrician diagnosed harmonic distortion from the onboard charger. I spent $7,500 on electrical upgrades (dedicated EV line and panel upgrade) to charge safely. Manufacturer Response: I have had an open case with Mazda corporate for nearly two weeks. They refuse to acknowledge overall vehicle safety or provide written documentation confirming safety. Request: I urge NHTSA to investigate whether these defects represent a systemic safety issue in Mazda CX-90 PHEV models and take appropriate regulatory action

premature failure of OEM Falkens on CX-90 PHEV at 20k miles, posing hydroplaning/skidding risk; Mazda denying full goodwil

The steering is inconsistent. Sometimes it requires more or less effort to turn. The steering has been sticking around turns lately. This issue started over a year ago. They applied grease and it made the sticking go away but it has came back after 9 months.

My 2024 Mazda CX-90 continues to have a malfunctioning fuel gauge despite multiple dealer visits and the recall repair (Recall 25V568). The dealer confirmed the issue was fixed, but it is not. The digital fuel gauge does not update in real time. It remains stuck for long distances and only partially recalibrates after restarting the car. For example, on November 5, 2025, I drove more than 60 miles, but the gauge dropped by only about 10 miles. After turning the ignition off and on, the gauge adjusted slightly but still did not reflect the true fuel level. Photos from that day are attached. I have serious safety concerns. The recall notice states: “If the vehicle incorrectly indicates an inaccurate fuel level, there is a chance of unexpectedly running out of fuel while driving. This would result in an engine stall and vehicle being unable to restart, increasing the risk of a crash.” This issue persists even after the recall service was completed, suggesting that the current fix may not fully resolve the defect. This has been an ongoing issue. I visited the dealership again on Nov 5th, 2025.

On occasion (several times in a month) I will drive the car listening to the radio. I then park for a short time and turn the car on and drive away when I notice that the radio isn;t on as it was when I parked. I then have to pull over, park the car, shut off the engine then restart. Now the redio comes on. I am concerned that other safety items are also non functioning when this happens. The dealer has been no help.

While driving 35 mph on a busy street, our vehicle completely lost power. The vehicle started violently shaking until I came to a complete stop. Many warning lights came on. Two primary: "Hybrid Malfunction", "Engine Malfunction" along with a couple others. When I stopped the car completely, it took 5 minutes before I could change the car from park to drive to move the car out of the way of oncoming traffic. Sitting in the middle of a busy road with hazards on is not safe!! Also, Suddenly losing power on a very busy street caused car behind me to slam brakes and honk at us. Very lucky we didnt cause an accident. If this had happened in a different situation such as freeway at 75 mph, major intersection, on a long roadtrip etc... the risk for significant disaster increase significantly! The car is current at Tum Dahle Dealership in Murray, Utah. This is the second time in 4 months we've had to take this car to the dealer for an issue. The first time was just an "Engine Malfunction" light. It sure seems like we bought a lemon. Even if they fix this car, my confidence is extremely low in this car being a safe car that im ok with having my family in.

Humming noise coming out of the powertrain that might be related to gear box or bearing. This mechanical safety issues mught endanger my life and cause a breakdown while driving, thus an accident. Mazada did not find the fix yet and unable to repair. Since September 3rd, my car is in Jim Click repair shop with no solution at sight.

The hybrid battery and hybrid system malfunctioned. The vehicle emitted a strong rotten-egg odor (consistent with hydrogen sulfide gas) inside the cabin from [XXX] to [XXX]. The hybrid system warning light first appeared on [XXX]. On [XXX], the air conditioner did not work while driving, and on other occasions it failed to turn on until the engine was restarted. On August 5, 2025, the vehicle was serviced for a related recall, but the warning light returned shortly afterward. From [XXX] to [XXX], my children (ages [XXX] and [XXX] ), my elderly mother, and I were exposed to fumes inside the cabin. We experienced headaches, nausea, and dizziness. On one occasion, my mother nearly fainted after dinner while visiting, which coincided with her exposure to the odor. The dealership did not warn me that the hybrid warning light could be associated with the odor or that an odor would be hazardous, so I continued driving the vehicle during this period. On September 3, 2025, the dealership confirmed the hybrid system malfunction, deemed the car unsafe to drive, and ordered a replacement battery. The vehicle was out of service until September 15, 2025, when the entire hybrid battery was replaced. The dealership inspected the vehicle multiple times, and Mazda corporate (Customer Experience Center case manager) was notified. The component was replaced under warranty, but the event created a significant safety risk due to exposure to toxic fumes and the potential for hybrid system failure while driving. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Ever since the lease of this vehicle on January 2025 we’ve had problems with the brake/rotors took it in twice for that. As of recent August 2025, we took it in for loss of power going up a hill, hybrid malfunctioning electrical system going out. Dealership gave it back saying everything was fine. We took it on August 29, 2025 to Colorado vehicle failed to perform loss of power going up the mountain almost got hit by a vehicle because I was in a fast lane with my family had to pull over with whatever power I had left in the engine (not the battery). I mean the vehicle just keeps failing to perform as it should as well on the way back. It had the same issues but as severe going to Colorado.Vehicle does not change gears going uphill. When we stopped in Vegas for fuel, fuel door did not open it & malfunctioned. So vehicle does not perform well in cold and hot weather AWD system does not work at all. We feel a jerking, we hear a whistling’s type of noise that the dealership fell to inspect. Per them everything worked fine but when we took it to Colorado this weekend for Labor Day, vehicle underperformed with extreme safety concerns and we contacted Mazda, but they fell to listen to our concerns and say the vehicle is fine but when you drive the vehicle, it does not perform as it should and is a safety hazard to us and anybody around us due to a loss of power and everything I described above.

The backup camera did not beep as I backed into a mailbox. The emergency braking also did not activate. The following day when I used the backup camera it was displaying an image of somewhere I had parked prior (it was not the real time image). The wrong image stayed displayed despite turning the car off and back on multiple times.