*Median odometer reading when the problem happened, where owners gave one. One complaint can name several problem areas.
Electrical system
Since purchasing the vehicle, the braking system has activated on its own for no reason. Today, Oct 19, 2026, it was cold and it said the system was failing. My camera system fails when it rains. My 2024 Mazda CX-30 has 62,000 miles and is experiencing the exact catastrophic phantom braking and forward camera failures detailed in NHTSA Recall 24V649000 (Mazda Campaign 6824H). My VIN is currently excluded from the recall campaign, but the vehicle is a severe highway safety hazard due to spontaneous unprovoked braking
May 16, 2025Air bagsCrash1 injury
Airbags did not deploy, sensors keep going off, car keeps over heating even before accident did take it in to Mazda to be fixed two months prior.
Jun 2, 2026Power train
The vehicle is experiencing premature transmission failure, since about 9,000 miles. Mazda has been dropping the ball at replacing it under warranty and we found out there are 3 other CX-30s that I know of with similar issues. I believe Mazda has a faulty transmission in these cars based off my findings and other complaints.
May 4, 2026Service brakes
What is happening with my car are the exact symptoms of the known Mazda Recall 6824H - where the Smart Brake Support suddenly engages for no reason and when it does not need to - which has almost caused me to be rear-ended a few times. This has happened at least 7-8 times since I have owned the vehicle. Apparently, my VIN does not fall under the cars that Mazda reports for the Recall, but nonetheless, my car is still malfunctioning as the Recall describes, which is a safety issue for me. The Recall also states: "Due to an improper program setting, affected FSC (cameras) were not updated from production mode to normal mode. As a result, all three systems described (HBC, SBS, LAS) will not…
Jul 22, 2026Electrical system
Reporting Product Defect in Mazda Vehicles I am writing to bring to your attention a recurring design flaw affecting current Mazda vehicles, including models such as CX30, MX30, and potentially the Mazda3 series. Following heavy rain or high humidity conditions, there is a consistent issue with the tire pressure sensor alarming and the smart key being unable to unlock the car doors. I have checked my key fob battery, RF function, car battery - none of these are the root cause. Despite consulting local dealerships and various Mazda forums, no one seems to have a definitive solution to this problem. Therefore, I am reaching out to report the existence of this product defect. This issue…
Jul 28, 2026Service brakes
When I first got my Mazda CX30 2024 New lease ,my Breaks were very weak & didn't perform as new. Only 2 years later w 9K miles on it, Mazda states my breaks need to be replaced. My rotors need to be shave. A whole list of services on a car thats 2 years old. My concern is, break service at 9K confirm my car wasn't new and that Mazda put my Safety at risk w Old Breaks... Mazda is hiding somerhing about my breaks playing games...in the mean time I feel my safety is in jeopardy with defective breaks that maza should fully cover under warranty. Which they won't honor. Putting my safety in jeopardy
Jul 8, 2026Service brakes
What component or system failed or malfunctioned, and is it available for inspection upon request? The automatic braking turned on while I was accelerating. My car is available for inspection. How was your safety or the safety of others put at risk? I could have been rear ended because my car automatically braked at an unpredictable time in rush hour traffic with someone very close behind me. Has the problem been reproduced or confirmed by a dealer or independent service center? It has happened to me maybe 4 times before but the dealer hasn't been able to reproduce it. Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? No. Were…
Jun 16, 2026Fuel/propulsion system
[XXX] fuel door assembly has come loose from body. It looks like the clips that hold it in place have become worn or loose by the weight of the gas nozzle or by the fact that the gas door will not close correctly and car wash machine has made it looser and it appears to not shut all the way, and the body colored panel has fallen off as a result and when you pump gas, the assembly moves may be possibly causing it to leak gasoline if the seal or gasket becomes dislodged because of the loose clips that hold assembly to the body panel. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
Aug 21, 2025
Owner complaints are submitted to NHTSA by the public and are not verified. Shown as filed (NHTSA removes personal details); long reports are shortened.
