2024 Mazda CX-90 Plug-In Hybrid complaints

On July 15, 2024 this vehicle at 50 mph on cruise control suddenly flashed white warning words indicating problems with the cruise control and immediately thereafter started flashing “hybrid malfunction” and to return to service dealer. At the time of the hybrid malfunction warning which was right after the quick cruise control warning, the engine operation, specifically the gas pedal no longer delivered power to vehicle, either electric or gas. Additional warning was to pull off to the side and stop and turn off vehicle. This occurred and vehicle was pulled to the side put into park and turned off. Waited approximately 3 to 5 minutes and restarted the engine which started in gas with no electric although there was electrical charge on the battery. Was able to continue to our final destination approximately 15 minutes later and no more than 10 miles driven. Hybrid malfunction was still visible on the dash to include the warning stating that vehicle needed to go to the service department. Approximately an hour later, vehicle was turned on again with the same warning about the hybrid malfunction, however, engine started in electric. Drove vehicle to dealership and stated what happened. Dealership the next day stated that this was a phantom code known by Mazda, but no problems associated with the code. Vehicle picked up per service advisors request two days later. Mazda dealership stated that headquarters had eyes on this particular vehicle. A day later after the pick up Mazda d

I was driving 65 mph and the hybrid system malfunction warning came up. Car dropped to 25mph - pressing the gas pedal would not increase the speed. Continued to coast with no acceleration until it came to a stop and shut off

4 weeks ago my wife was driving on a busy highway and lost propulsion. Hybrid System malfunction message. She was able to pull over before causing an accident and put the car in gas only mode. She never shut the car off and drove on to her destination. I met her and picked up the car and took it to the dealer. Car is new and has 5000 miles on it. Car has been at dealer for 4 weeks with no answers and several unanswered phone calls to customer service at Mazda Corporate. Been told that is is a software problem with no fix and no time frame of when there will be a fix. I do have a case number with Mazda. Today after threatening calls to invoke "Lemon Law" in my state Mazda has suddenly said that the car has a faulty inverter and that the part is available and will be replaced. My feeling is that they are just throwing parts at a problem. This car is unsafe and NHSTA should put pressure on Mazda to either resolve issue or buy back cars. The majority of the complaints listed here are the same. Please take action!!

My car senses a vehicle in a lane to the left or right of me as a vehicle in my lane and slams on the breaks. There is a recall on this with Mazda, but not for my manufacturing date yet. It's very dangerous. Occurs all of the time

The fix done as part of remedy for NHTSA Recall #: 23V-718 didn’t actually fix the issue. In fact, I feel the frequency of blacked out 360 view monitor is increasing. Below are the details of the recall related to the same issue. Mazda Recall #: 6223J NHTSA Recall #: 23V-718 Recall Date: 10/26/23 Recall Repair Status: Repair Completed

Gas door stuck closed

Blind spot warning system gives false alarms repeatedly when no vehicle or obstruction is present. System is completely unreliable and creates an unsafe driving situation.

When cruise control is active but slower than set speed vehicle will full throttle acceleration to get to set speed creating a situation where loss of control of the vehicle partially occurs. If this happened in wet or winter conditions loss of vehicle control is very possible.

On several occasions vehicle while in EV mode has lost all propulsion at highway speeds creating an unsafe condition.

At highway speeds on a few occasions when traffic I slowing vehicle appears to continue to accelerate for 1-2 seconds after removing foot from accelerator almost causing accident since traffic ahead is slowing.

Car suddenly, unexpectedly, and without warning lost power while driving putting us at risk for serious collision/injury with inability to drive the car and then gave "Hybrid System Malfunction" warning. This occurred AFTER performing the recall which was supposed to address this issue.

On April 3rd, around 5:20 PM, while driving with my daughter on a suburban street, my Mazda hybrid experienced sudden brake failure as I approached a stop sign. Attempts to engage the brakes failed, but they unexpectedly resumed, allowing the car to stop safely. This incident triggered multiple dashboard warnings including "Engine Malfunction," "Hybrid System Malfunction," and "i-Activesense System Malfunction." The hybrid battery’s range indicator also fluctuated erratically between 1 and 4 miles. The primary malfunction involved the vehicle’s braking system, with concurrent issues in the engine and hybrid systems as indicated by the alerts. The vehicle and all related components, along with the computer fault codes, are available for inspection and further testing at the Mazda dealership. The brake failure significantly endangered the safety of both myself and my daughter, as we nearly entered an active intersection uncontrollably, which could have led to a severe collision, posing a grave risk to both occupants and pedestrians. Despite extensive diagnostics and approximately 33 miles of test driving under various conditions, the dealership was unable to replicate the brake failure, raising serious concerns about the braking system’s reliability and predictability. The dealership's technicians, in cooperation with Mazda corporate engineers, have inspected the vehicle and analyzed the diagnostic data and fault codes. As of April 19th, the car remains with the dealership for

Driving up snowy pass on I-90 approaching the top of Snoqualmie Pass. Vehicle stalled and warning lights flashed critical warning and loss of power. The vehicle stopped in the middle of the highway and would not start or go into drive. After a few minutes, because of speeding and adverse conditions, another driver collided with my vehicle from behind. Another following vehicle lost control and ran off the road. Nobody was injured. Mazda has not provided any information to what happened with the vehicle. We added about 12k miles in the 5 months of driving it, so we had lots of testing with it, and never ran into this serious of an issue with this or any other vehicle.

When using adaptive cruise control on multiple lane highways/freeways the vehicle detects other cars/trucks that are in other lanes as being in your lane. (Shows on the dash display as in your lane). This fools the vehicle into believing it needs to make an emergency brake as a vehicle is in your lane and a crash is imminent when no such maneuver is necessary. This could cause a rear end crash or loss of control of the vehicle when it brakes unexpectedly with no real world cause. This has been an issue since vehicle is owned (July 2023) it is also widespread with this specific model [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

While connected to a level 2 charger, overheating caused both the charger and charging port of the vehicle to melt together such that it was very difficult to disconnect, and both were then unusable – needing replacement. (photos attached) We feel that there should be some safeguard in the vehicle to prevent this situation as it is a fire hazard. There were no warning lights, sounds, nor signals from the vehicle to warn of the problem. We were present when this occurred, so we could disconnect before a potential fire may have occurred. When we called for service, we had to wait two weeks for an appointment, and then were told that the car was not safe to drive until repaired. This was not considered a warranty item even though the car had fewer than 2800 miles and only owned by us for fewer than 7 months. We were charged $5000 for the charging port and cable assembly and $800 labor. (Copies of service receipts attached.) We contacted Mazda regarding our concern and were given Case #00182286. We received a reply by phone telling us that Mazda bears no responsibility for this (they feel ii was the fault of the charger) and that it is an insurance matter. In fact, auto insurance does NOT cover this. Our concern is that it very well may be a safety issue as people usually charge in their garages or near other cars and buildings in public. In either situation, a fire could be a serious hazard for many people.

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.

At 3200 miles the vehicle had a major powertrain malfunction causing the vehicle to throw multiple error codes - Hybrid System Malfunction; Charging System Malfunction; Electrical Leakage Detected. Was instructed to pull over to a safe area immediately. Was unclear how long car would continue to be drivable. Once car stopped it became completely immobile. Repeated restart attempts would not let vehicle start ICE engine or shift into gear. Had to be towed via dollies to nearest dealer for diagnosis and repair. Dealer found a failed PTC heater unit as source of problem and replaced it (Mazda part- KMV6-61-FHX). Vehicle is once again drivable, but the dealer has no idea what would cause the unit to fail and how to avoid future problems. Dealer has heard about this with many vehicles and repaired several similarly. We are fortunate to have found a safe place to pull off the road before powertrain shutdown, but if not we would have been stuck on the road with no ability to move the vehicle and occupants to safety. I hope NHTSA can investigate whether a recall of that part or the software that controls it is needed. NHTSA should also look into the failure mode of the vehicle to see if a different approach is safer and more appropriate.

On [XXX], San Diego, CA. (car is new purchase of 1 month 1 week old, 1250 miles, outside temp of 60 degrees, 3/4 battery charge, full tank of gas) Slowed to a stop at a red light in morning rush hour traffic. Engine sputters and multiple warnings appear on dash, including "Hybrid System Malfunction" "I ActiveSense Malfunction" "check engine" etc etc. CAR DIES IN LANE OF TRAFFIC AND LOCKS IN PARK. Attempted to restart 5-6 times, car would start and die immediately with same warnings. 7th restart and engine starts but had to finish drive in sport due to "Hybrid System Malfunction". Per NHTSA and dealer, all previous recalls had been performed/addressed prior to purchase date of [XXX]. Left car with dealer on [XXX] to address and repair issue. Completely unsafe for vehicle to suddenly die in traffic, with no way to move to the side of the road. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

On [XXX], I was driving on [XXX] near Pasadena at normal speed of traffic when suddenly an error message “Hybrid System Malfunction” appeared on the dash board along with check engine light, and the car began to stall slowing down to nearly full stop almost immediately. When I pressed gas pedal, it would not accelerate. Because I was in the far right lane, I had just about enough time to pull over onto the shoulder before the car stopped completely. The car was in EV mode (using all electric power) when this incident occurred with 20 miles of electric range still left. I was lucky that no cars were right behind me as the traffic was moving about 60 mph or my car could have been rear-ended when it came to such an abrupt stop. I put the car in park and turned off the engine, then turned it back on after a couple of minutes. The dashboard was flashing “Hybrid System Malfunction” and “check engine” light was on but I was able to drive it because it had switched to gas power mode. I immediately drove the car to New Century Mazda in Alhambra where I purchased it on [XXX]. The Mazda app on my phone captured two Vehicle Issues Detected at the same time: Hybrid System Malfunction: There is a possibility of restricted power output” and “i-ACTIVSENSE malfunction.” The Hybrid System Malfunction was the most serious and frightening of a series of malfunctions that my car experienced since it was purchased two months ago. On [XXX] (4 days after purchase) the car displayed “Approaching Vehi

LA SUV MAZDA CX90 PHEV HIBRIDA SE COMPRO EN JULIO DE 2023, ES TOTALMENTE NUEVA. QUEREMOS PONER EN EVIDENCIA EL ALTO RIESGO QUE PADECEMOS CON EL VEHICULO, ENTRE [XXX] MI MUJER Y YO IBAMOS EN EL AUTOMOVIL Y DE REPENTE SE FRENO POR COMPLETO EN MEDIO DE UN PUENTE QUE ES MUY TRANSITADO Y CAUSO UNA PREOCUPACION Y MUCHO MIEDO PORQUE NO LO ESPERABAMOS Y AFORTUNADAMENTE NO PASO NADA POR QUE IBAMOS DESPACIO EXACTAMENTE 25 MILLAS POR HORA Y PORQUE EL CARRO QUE VENIA ATRAS DE NOSOTROS GIRO A LA IZQUIERDA JUSTO ANTES DE NOSOTROS PERDER EL CONTROL DEL AUTOMOVIL QUE SE FRENO SOLO SIN JUSTIFICACION ALGUNA NO OBSTANTE ADELANTE DE NOSOTROS NO HABIA NIGUN AUTOMOVIL PARA QUE EL AUTOMOVIL SE DETUVIERA. NOTA: MI MUJER SE ENCUENTRA EN ESTADO DE EMBARAZO Y NO SE SIENTE CONFIADA EN EL AUTOMOVIL, TIENE MUCHO MIEDO A LA HORA DE USARLO. EL PROBLEMA ES AUN MAS GRANDE PORQUE DIAS ANTES DEL INCIDENTE EL CONCESIONARIO REALIZO UN SERVICIO DE CAMBIO DE ACEITE Y SERVICIO POR UN RECALL POR LOS SENSORES DEL VEHICULO, DE LO CUAL SOLO HICIERON CAMBIO DEL ACEITE. ADICIONALMENTE A ESTA INFORMACION EL VEHICULO POSEE VARIOS RECALL QUE NO HAN SIDO SOLUCIONADOS POR EL CONCESIONARIO, TENEMOS PRUEBAS DE LOS VARIOS PROBLEMAS QUE VIENE PRESENTANDO EL VEHICULO. ADICIONALMENTE HEMOS VENIDO PRESENTANDO DIFICULTADES CON EL SERVICIO PRESTADO EN EL CONCESIONARIO DE MAZDA DE LODI NJ CODIGO POSTAL 07644, NO HAN TENIDO VOLUNTAD EN SOLUCIONAR NUESTRO PROBLEMA , HICIMOS LA RESPECTIVA QUEJA ANTE MAZDA MATRIZ Y SOLO NOS DIERON LA OPCION

Hybrid system electrical leakage. Literally makes the car unusable. Dozens of examples on both Reddit and Facebook.

I have a recall open on my CX-90, took the car to the dealership and they informed me that the car was fixed, the recall is 6223J, but it is still happening it happened a day after the reprogramming, it is not fixed and I'm not sure if the fix is good I have a full video about it, I was able to record date and time when it was recorded,I did a gif to be able to upload it to the website

The contact owns a 2024 Mazda CX-90. The contact received notification of NHTSA Campaign Number: 24V022000 (Steering) however, the part to do the recall repair was not yet available. The local dealer was contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was not made aware of the issue. The contact had not experienced a failure. VIN tool confirms parts not available.

While driving CX90 PHEV vehicle, a "HAZARD" error displayed on the dashboard and the vehicle stopped driving/accelerating completely. Displayed error reported a Hybrid System Malfunction and instructed driver to switch from hybrid to normal setting. Vehicle would not accelerate despite switch to normal setting and power remaining. Driver powered off vehicle and error remained on display. Driver again powered off vehicle after short wait and error was no longer displayed. Vehicle could then be driven in normal setting. Dealership and manufacturer have been notified with a request for immediate assistance. Vehicle is new and has only been driven for approx. 6 months. No advance warning signs appeared. Internet search reflects a Mazda owners' forum page [XXX] suggests that error has been known for several months with no resolution or recall. A vehicle that shuts down while driving in traffic is a hazard to us all. Responses are requested from both Mazda and NHTSA. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Vehicle is in normal mode with EV mode engaged, car is going 70mph and suddenly accelerator stops working and decelerates to ~60mph until vehicle suddenly aggressively switches to gas mode and accelerates again.

CX90 PHEV Premium Plus new purchase 12/2023. 1/24/2024: "Hybrid System Malfunction, Have the vehicle Inspected " On a busy freeway with big rigs and other cars during rush hour traffic (5:25pm), going about 70 MPH. Only 1700miles on car so far. 50-60 degrees Fahrenheit outside. 2mi left on charge, full tank of gas. Car completely unable to accelerate all of the sudden on busy highway once this light came on. Was able to pull off to shoulder, albeit challenging as unable to accelerate and navigate through fast cars in right 2 lanes. Was able to restart car, and go at limp speed but unable to get fast enough to merge back. Called tow truck. Car towed to Mazda dealership. Then unable to get off flatbed of the tow truck as would not go into reverse. Tow guy called me and the staff at Mazda called their Service Manager, had to reset that code. (Something glitch kicked in and locked the car from being able to shift gears). Mazda Service was responsive, worked on and got diagnostics the next day. Stated that it was a computer system glitch. So they restarted the whole system. light is gone and car drives during their testing. They can't explain it. So computer and electronic glitch and system misread leads to a MECHANICAL malfunction that stops the car to be able to be accelerated on freeway. I am a mom of 3 young kids, and lucky I am alive.

The car has an "Engine Malfunction" emergency light that goes on. I brought the car into the dealer right away - the car had $1k miles and is brand new, so it's quite scary to get this message. They cleared the error and told me not to worry about it, but were unable to provide a solution. It recurred immediately (within 1-2 days). I reached out to the service department and they told me to ignore it (that there is no fix in progress). My car is unable to change the Mi Drive mode (so it can only stay in Hybrid mode). This is unsafe and goes against the intended use of the car. For example, on a very cold day like today, I wish to warm the car in sport mode (aka not hybrid or electric) and I was unable to change the mode.

What component or system failed or malfunctioned, and is it available for inspection upon request? "Hybrid System Malfunction. Stop Vehicle in a Safe Location." Car completely inoperable. Had to tow to dealership as would not start or go out of park. Hybrid and High Voltage battery issues reported by multiple owners. This happened less than a month into owning the vehicle and with less than 1200 miles. How was your safety or the safety of others put at risk? Car deceleration on highway specific to this error reported by multiple owners. Has the problem been reproduced or confirmed by a dealer or independent service center? Uknown. Currently being serviced by dealer. Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? Currently being inspected by the Mazda dealership I leased the vehicle through. Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? "Yes, just a week into having the vehicle (at 300 miles) a "Hybrid System Malfunction" error message appeared to "Have the Vehicle Inspected." Dealership had it in their Service shop for over 2.5 weeks and said nothing was wrong with it.

Vehicle engine suddenly loses significant power, the car violently shakes and the engine starts knocking. When attempting to bring the car to a safe location, the vehicles brakes wouldn’t work. Then the car displayed a bunch of errors, like “Engine Malfunction” and “Hybrid System Malfunction”. The car has been in service twice for this issue and they haven’t found a fix. This malfunction has happened twice during our commute with our children in the car.

Driving to work the dash lit up with warming signs stating electrical leak detected, Malfunction to hybrid system stop car immediately and contact dealership. Once stopped the car locked up. It would not start would not engage in to gear. There is no neutral gear bypass. We were stranded. Called Mazda roadside assistance and it took 9 hours for a tow truck to arrive. Tow truck had to drag the car up onto flatbed since there was no way to put it into gear. We we're in the city limits not out in the middle of nowhere. The car is currently at the dealership awaiting parts.

Started the vehicle and got the message "Hybrid system Malfunction. Have the vehicle inspected". Vehicle was shaking and would not go above 30 MPH.

I am reporting a safety problem with the adaptive cruise control feature of my 2023 Mazda CX-90. The adaptive cruise control system does not detect the lanes correctly and applies the brakes unnecessarily, even when there are no cars in front of me. This happens especially on curves and when there are trucks on other lanes. This is very dangerous and I have been close to be rear-ended several times. I do not feel safe driving this car with this feature on. I haven't contacted my dealer, but it seems to be a well known issue for many owners. [XXX] [XXX] [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

This vehicle at highway speeds will suddenly brake when intuitive cruise control is engaged. It mainly does this when the hwy is not straight and there is a vehicle ahead in a different lane or if there is a concrete median on either side. It’s not safe to be going 70-78mph and have your vehicle brake and bring speed down to 50-60. I’ve had intuitive cruise control on 3 other vehicles and none of them did this. Vehicles following become upset when vehicle brakes with no vehicle ahead of us. Also, it’s a danger of being rear ended or causing a road range incident when someone behind you thinks you are brake checking them.

Driver side mirror shakes at speeds over 45 mph which makes viability in driver side mirror unsafe and distracting while driving.

The vehicle incorrectly sensed a large truck in the right lane, next to the lane I was in, as being in my lane causing the vehicle to slam on the brakes and caused me to nearly get rear ended by following vehicle. Other vehicle had no notice, as my lane was completely clear. Further testing on my part found that numerous vehicles had incorrect lane placement on the provided graphical display. Dealer says everything checks out normal. This is a major safety issue for me.

While traveling in the left lane on a 2 lane interstate, 79S, the car suddenly braked as I passed a truck in the right lane entering a curve. The "apply brake now" emergency message also flashed on the display. Had a vehicle been closely following behind, it would have crashed into my rear

While passing a truck that is in the right hand lane, adaptive cruise control will pick up a vehicle straight ahead and hit the brakes hard. Issue - there is no vehicle in front of you. Almost got rear ended due to this issue.

Drive on freeway with Mazda Radar Cruise Control engaged. When the road curves slightly, the radar picks up the car in the right lane next to me as a car in front of me and slams the brakes. It’s a dangerous situation when the traffic is moving at least 65 miles per hour.

When radar cruise control is on, the car sometimes brakes hard totally unexpectedly when it’s about to overtake to a slower-moving vehicle in the adjacent right lane, and despite the fact that the CX-90 does not have any vehicle directly in front of it in its lane. This happens quite regularly at highway, when I am guetting within 100-200 ft of a semi located on the adjacent right lane, even when the road is at right. I almost got rear ended at 75mph by another vehicle because of that, as they did not expect my car to brake while overtaking a semi at that speed with no car in front of me. Very dangerous and needs to be fixed by Mazda.

The driver side side view mirror vibrates on speeds more than 60mph hampering visibility and creating safety hazard. The passenger side mirror is fine.

Component: Driver side mirror. Issue: When the vehicle is above 50 mph, the mirror vibrates and obscures driver's view, which could lead to death/serious injury. Passenger side mirror is steady. When: The issue happened since first day of vehicle ownership. But it was not reported to dealership until 3 weeks after delivery (i.e.Sep 12, 2023) Dealership Inspection: The dealership acknowledged the issue but nothing couldn't be done to remediate because manufacture doesn't have a solution.

I was driving on the freeway on the fast lane and the vehicle slowed from 65mph to zero in about 30 seconds and came to a complete stop. It happened so fast I couldn’t change lanes to get to a safe spot. I was left stranded on the fast lane of the freeway with traffic coming right at me. Vehicle displayed a Hybrid system malfunction message.

The driver-side mirror has a lot of vibration when driving on the highway (60+ MPH). This vibration creates a distraction, and reduces visibility of cars/objects in the mirror. The issue has not been brought to attention to the dealer although seems to be a widely occurring issue amongst these cars.

The driver side mirror glass vibrates and shakes inside the mirror housing at high speeds, over 50mph. The vibrating glass makes it hard to see objects behind the vehicle or judge distance on the driver side. The passenger side mirror glass is unaffected, does not vibrate, and I can clearly see objects behind the vehicle on passenger side. Additionally, the mirror housings on both sides of the vehicle seem to be tightly attached to the doors. The vibration is strictly isolated to the glass inside the mirror housing on driver side.

Vehicle was parked in garage overnight in our house. At approximately 630AM, carbon monoxide detector alarmed indicating high CO levels inside the house. Source likely appeared to the vehicle- distinct odor of burned electrical wiring/insulation; vehicle felt warm to the touch. Vehicle was dead and would not start. Mazda app indicated critical warnings for ACTIVESENSE, hydrid battery, hydrid system malfunction, high voltage battery depletion, and charging system malfunction starting abruptly at 0210 hours and terminating at 0340 hours. Vehicle had simply been parked in garage and was not plugged in or charging. Last use of vehicle~930PM the night prior. There have been no prior warnings or indications of problems , vehicle has~1k mileage. Vehicle was purchased 7/5/23 and event occurred 7/30/23. Vehicle was towed and is in dealership currently. Mazada USA has been notified by us. Main concerns: 1. Spontaneous carbon monoxide emission of a brand new hybrid EV vehicle model that was parked in a residential home; not plugged in or charging. House full of adults and children overnight. 2. Possible electrical issue with EV/hybrid system leading to spontaneous incomplete combustion of some electrical/battery component.