2020 Mazda CX-30

My 2020 Mazda CX-30 has an intermittent no-start condition caused by a complete electrical failure. This occurs randomly, often overnight and after long or short trips. When it happens: The car does not respond to the key fob or ignition Dashboard warning lights are off Vehicle cannot be started, creating a safety risk if it occurs during travel or in an emergency The defect began during car's full warranty period and has persisted despite multiple service visits and battery replacement. The dealer has been unable to diagnose or correct the issue, and Mazda Corporate is aware of the defect under case Case Number 00398310. After about two years of these intermittement failures, and parasitic draws ruled out, I paid to have the Battery replaced, independently of Mazda and the battery failed yet again. Routine diagnostics have not resolved the defect Issue is intermittent and unpredictable This is a Safety Risk as the Car has failed to start when needed on numerous occasions, and has left me stranded. ALL of these Failures have occured without warning Mazda Corporate is aware and has requested dealership diagnostics. Dealership has not reproduced the problem. Issue remains unresolved as of 1/10/2026 Video documentation exists showing dealer inspection and inability to find failure source. I am submitting this complaint to NHTSA because the defect: Impairs the vehicle’s safe operation Has not been reliably repaired Represents a potential safety risk to the driver and public I request that this complaint be recorded for investigation and included in any potential recall or safety evaluation. Service records available on request Emails with Mazda Corporate als available Video of dealer inspection showing intermittent failure avaialble

The contact owns a 2020 Mazda CX-30. The contact stated that after starting the vehicle, the instrument panel made an abnormal sound. The contact then noticed that the odometer had inadvertently rolled back to 9,999 miles. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The manufacturer was not made aware of the failure. The failure mileage was approximately 49,000.

I bought Mazda CX30 in 2020 and the battery already starts to fail. The engine light and the battery light are on suddenly when I was driving. Then, after a while, when I restart the engine and it starts to work again. However, it happens for two times within a week. I have sent the car to the Auto Zone and the nearby car auto repair company to check the car. However, they said they cannot detect anything as the engine light and the battery light are on again this time. It is so dangerous when the car suddenly stop in the middle of the road when I was driving. I am so lucky that this accident happened during rush hour and there were heavy traffic.

LAST NIGHT, AFTER WE RETURNED HOME, MY WIFE REMOVED A CUP FROM OUR VEHICLE'S CUP HOLDER. SHORTLY THEREAFTER, AN EXTREMELY LOUD SOUND OF STATIC BEGAN TO BE HEARD, EMANATING FROM THE CAR'S SPEAKER SYSTEM. REGARDLESS OF WHAT WE DID THE SOUND WOULD NOT TURN OFF, AND REMAINED ONGOING FOR A PERIOD OF ABOUT AN HOUR. NOTHING HAPPENED WHEN WE TURNED THE SPEAKER VOLUME DOWN, OR TURNED THE CAR ON OR OFF. IT WAS NOT ONLY LOUD, BUT ALSO QUITE SCARY. WE HAD THE CAR TOWED TO THE DEALERSHIP, BUT THEY INDICATED THAT THEY COULD FIND NOTHING WRONG. THEY, HOWEVER, ALSO LET US KNOW THAT WHEN THEY CONTACTED MAZDA MAZDA INDICATED THAT OTHER CARS HAVE BEEN EXPERIENCING SIMILAR PROBLEMS. LUCKILY THIS DID NOT OCCUR WHEN WE WERE DRIVING, BECAUSE IT WOULD HAVE BEEN QUITE DISTRACTING AND COULD HAVE LED TO A CRASH. *TR