What 47 owners told NHTSA about the 2025 Mazda Cx-70 Mhev

While driving at a speed just under 45 mph, my Mazda CX-70 suddenly displayed and chimed “Hybrid System Malfunction. Have Vehicle Inspected.“. This warning startled me because I am familiar with issues since I had briefly owned a CX-90 PHEV the first year this model came out and it had the same exact problem. I discovered that this issue carries serious safety concerns and ended up convincing the dealer to swap the vehicle for a CX-90 inline 6 gas only model after hours of pleading. I ended up signing up for another lease a couple of years later with this current CX-70 PHEV, as I was told that the “bugs” have pretty much been worked out so I would give it another try. This warning continued to stay on as I drove for a few minutes so I immediately took the car straight to the Mazda dealership service department where it was kept 24 hours. The dealer said that the issue resolved itself - something to do with not driving the vehicle interchangeably enough between gas and EV mode. The photo was taken once I slowed down to stop at an intersection since it took me 15 minutes to drive to the dealer.

NHTSA ODI 11740990

On the morning of January 28, 2026 I arrived to work and came to a complete stop in my works parking garage. I used my key card to raise the gate. Once the gate was fully raised I pressed the accelerator to drive up the ramp. Shortly after accelerating, my engine revved really loud and high rate, then my car automatically increased speed. I immediately pressed the brake pedal but it didn’t stop. It continued accelerating at a speed not controlled by me with my brakes not engaging even though I was pressing the brake as hard as could. I estimate I travel about 100’ with no control of the gas or brake. It lasted about 15-20 seconds. If a car were in front of me at that time, I would have crashed into them because I could not stop the car. I immediately called Davis Moore Mazda. I had the vehicle towed there because I didn’t feel safe driving it. Information from my cars computer program was sent to Mazda. Mazda didn’t see any issues and their diagnosis was a foot was likely on the accelerator causing the acceleration. The general manager called me to discuss. He said the only thing that registered was acceleration. I asked does the computer show my attempt to brake (stop) the car. His response was the computer wouldn’t read that because that was a normal driving process that wouldn’t be recorded. I asked why the acceleration would trigger an alert in the computer, since acceleration is also a normal driving process. He then said the computer picked it up because it accelerated quickly. There were no warnings present prior to this issue.

NHTSA ODI 11716014

After starting the vehicle and driving it for a short distance, I forgot to disable the engine start/stop function. When the engine shut down, I pressed the button to disable it as I loathe this feature. The button would not respond, resulting in the engine repeatedly shutting down during coasting events and limiting the functionality of my AC. I tried multiple times during my 45-minute drive to disable it, but was unable to. I shut the vehicle off and restarted it when I was safely stopped. The system worked as intended after this action. I have never had a car with so many technology bugs and electronic safety system issues as this one.

NHTSA ODI 11679575

This has been happening for over 6 months but it's getting worse. When moving at a lower speed, 10-20 mph, the motor or transmission is jerky and sluggish. This makes it very slow to move when pulling out from red lights or when in stop and go traffic on the highway. (Might as well be pulling out from the light in an 18 Wheeler.) I haven't taken to the dealer because from my experience, unless there is a code to look up, it's just money (and time) wasted. No, the vehicle has not been inspected by the manufacturer, police, insurance representatives or others. No warning or messages have been displayed, no other symptoms to report. One more thing, after driving for hours and getting back to the office. With the vehicle in Park, the rear passenger removes their seat belt and the driver removes their seat belt, the seat belt warning message displays. Now I could understand this if the vehicle was placed in Drive or reverse, but in Park? Really? Also note, in the mornings, the vehicle can sit and idle for over an hour and if the rear passenger doesn't have their seat on and you put it into Drive nothing happens, no messages or warnings at all. What if you had a kid in the back seat or something? Make it make sense.

NHTSA ODI 11669537

Involuntary acceleration. Twice now at very low speeds between 1-5 mph the engine revs up and the car lurches forward for a second or two. Was pulling into house garage and was about to push acceleration pedal when the engine revved on its own and jolted the car forward. I slammed on the brakes real quickly when it happened and slid to a stop almost a foot away from crashing into house wall. I don't know for sure but I feel if I hadn't pushed the brakes it would have continued. Has happened one other time to a different driver, same car. Aside from possibly sending me crashing through my house I live next to a school and children and families are walking across the crosswalks all the time. If it were to happen when someone was in front of me I'm scared of what would happen, or even just parking at the grocery store I could easily slam into the car in the next spot. There were no warning /safety lights or any error lights on the dashboard before or when this happened. Not sure what caused it so I checked multiple boxes of what I think it could possibly be. Mazda has a recall out but I checked my vin and so far it's not registering a recall. My technician at the dealership is off today but I will call back tomorrow and talk to him about the incident.

NHTSA ODI 11631266