EnginePowertrain (other)
Filed Apr 29, 2026
While driving, on approach to a stop signal, at an intersection the car stopped moving. The display said engine malfunction, have inspected. The electronics and engine continued to operate, but the car would not move when gas pedal was depressed. I shut off and restarted my vehicle numerous times, with no effect on the problem, the car still would not move. The vehicle behind me had to brake unexpectedly, and I could have been hit by others in the intersection, there could have been an accident.(I put car in neutral and the driver behind me, pushed my vehicle, manually, out of the intersection) AAA towed vehicle to the dealer I purchased it from, they were unable to reproduce the problem or retrieve codes to identify problem.( AAA did something under the hood before towing and I was able to drive vehicle to nearby parking lot to be towed) No other inspection has been conducted. Over prior week I noted intermittent engine revving while driving for very brief seconds and this occurred just prior to the incident that resulted in the inability to move the vehicle.
- NHTSA ID
- 11734603
- Incident
- Apr 27, 2026
ElectricalEnginePowertrain (other)
Filed Feb 24, 2025
As reported by others, Engine Malfunction light came on. Car running rough. Mazda dealer says corroded wiring harness and $5k to replace. They bypass the conventional repair and splice it in. Within a hour of driving after pick up, same engine malfunction light and rough running returns. This time they said I need a new transmission. Electrical issues and faulty transmission are both dangerous. With as much posted online regarding the transmission, I would hope to find a recall. $10k in repairs for a barely 4 yr old car!
- NHTSA ID
- 11644437
- Incident
- Feb 24, 2025
EnginePowertrain (other)
Filed Dec 5, 2024
Received a "LOW ENGINE OIL LEVEL” warning message before the regular oil change interval of 7,500. Light came on 11/20/24 after purchasing the vehicle from a Mazda dealership 8/10/24 (~3 months). Model and VIN were impacted by the Mazda Valve Stem Seal Settlement. This issue was not disclosed by the dealer.
- NHTSA ID
- 11629133
- Incident
- Nov 20, 2024
Driver assistanceEnginePowertrain (other)
Filed Aug 17, 2024
While I was driving on I-90, I lost control of the acceleration of my vehicle. The vehicle was towed and has been diagnosed with a failed transmission! The car would not accelerate or it would accelerate in bursts or rapidly slow down. I was able to pull over and the car failed to move at all after. My safety and others was put at risk as I lost the ability to control the speed of the vehicle on a road where the speed limit is 65mph in traffic around me. When the problem began no lights illuminated, until ~30 seconds in the yellow engine failure light illuminated and then the yellow transmission failure light illuminated. The car was brought to a dealership for inspection and they diagnosed it as a transmission failure. This is unacceptable for such a young vehicle (2021). It should be noted that the car manufacturer immediately approved the replacement the same day it was diagnosed (dealership said it usually takes 48 hours), but the part is back-ordered for months (probably because they know this is happening and trying to cover it up).
- NHTSA ID
- 11609112
- Incident
- Aug 3, 2024
EnginePowertrain (other)
Filed Jul 7, 2024
My oil changes were affected as well.
- NHTSA ID
- 11599603
- Incident
- Jun 14, 2023
EnginePowertrain (other)
Filed Mar 12, 2024
On multiple occasions, low oil warning lamp illuminates and I have confirmed low oil level. Dealer is unable to confirm and refuses to address Mazda TSB because oil level is no longer low since I topped it up. The failure lies in the valve seal assembly. My safety and that of my passengers is affected because in the event of a low oil incident, my ability to safely drive the speed limit and/or accelerate quickly is compromised. Should a catastrophic failure occur, engine would lose all power. Date of most recent incident marked below.
- NHTSA ID
- 11576891
- Incident
- Feb 4, 2024
ElectricalPowertrain (other)
Filed Dec 7, 2022
The car's battery has failed two times. The second time is after the battery was replaced -- so the problem was with two different batteries. Both times, I had to call & wait for roadside assistance. Dangerous situation. Both times, the car required a jump-start then a full charge. The dealer denies a battery problem or electrical system problem. However, a Mazda Roadside Assistance service provided advised me on 12/3/2022 that the (second) battery was dead and that something in the electrical system is clearly draining the battery. The car is driven every day. *** Several times a week there is a dashboard notice of "low battery risk". *** This has been consistent, starting with the first week of owning the car. It appears that something(s) in the electrical system is draining the battery to the point of failure. The car is 18 months old with @ 16,500 miles driven. It is a 2021 Mazda CX-30 Turbo Premium Plus. It is available for inspection.
- NHTSA ID
- 11496389
- Incident
- Dec 3, 2022
Driver assistanceElectricalPowertrain (other)
Filed Jun 12, 2022
Randomly accelerated on its own; burns oil- low oil levels twice in 6 months; randomly says cruise control is available under 25 mph when car is traveling at highway speeds; the unlock and lock functions randomly fail; lift gate randomly opens; alarm system randomly goes off; TERRIBLE fuel economy (18-21 mpg)
- NHTSA ID
- 11468850
- Incident
- Jun 4, 2022
Higher-selling and older vehicles accumulate more reports. Counts are not failure rates and are not directly comparable between vehicles that sold in very different numbers.