Mazda CX-30 Complaints

213 consumer complaints on file.

#11714353January 29, 2026
ELECTRICAL SYSTEM, SEATS, LANE DEPARTURE: BLIND SPOT DETECTION
I have been having repeated issues with the doors not autolocking, liftgate functionality, rear seat sensor, and random (collision?) warnings/sensors - among other settings that keep coming undone (audio options, etc) since the purchase of this car that I have been diligently notating/timestamping- i have close to 200 occurences so far. Just submitting another report to let you know it is STILL happening and IS NOT user error.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11712291January 20, 2026
UNKNOWN OR OTHER
My 2023 Mazda CX-30, which is currently under full manufacturer warranty, was brought to the dealer on October 10, 2025, specifically to address a safety defect involving white chemical particulates blowing through the HVAC vents. The dealership confirmed the failure of the "evaporative coating", which resulted in unidentified chemical byproduct being discharged directly into the passenger cabin.The vehicle remained out of service for 103 days due to this manufacturing defect. Upon receiving the Repair order (RO# 77004584) today, January 20, 2026, I discovered a significant safety concern that violates standard warranty repair protocols: the technician admitted to receiving two separate heater unit boxes that were damaged during shipping and subsequently 'transferred all salvageable items "from one damaged unit to the other to make one complete unit". As a consumer with a vehicle under warranty, I am entitled to a repair using new, undamaged factory parts. I am extremely concerned about the structural and functional integrity of a "reconstructed" HVAC system assembled from damaged components. Furthermore, despite the confirmed chemical emission, no professional decontamination of the interior was performed. The manufactures is now using financial threats of storage and rental car fees to force me to accept this substandard, "cannibalized" repair.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11706193December 19, 2025
WHEELS
Tire psi seems to vary greatly under mild conditions. Drove 10 miles- city. 40mph. 70 degree weather. Increased 3psi.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11706042December 19, 2025
ENGINE
One day after oil and filter change, engine LOW OIL LEVEL light illuminated on dash. Engine oil dipstick displays full oil level; no signs on oil leaks under the vehicle. Appears to be failed oil level sensor. Upon restarting the vehicle, LOW OIL LEVEL light is turned off. Intermittently returns after some time of driving. Have not observed light turning itself off without shutting down the vehicle.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11705780December 18, 2025
WHEELS
On December 13, 2025, my vehicle (2021 Mazda CX-30) was serviced at a Valvoline Instant Oil Change location. During service, the technician stated he was checking tire pressure and asked whether 36 PSI was acceptable. I agreed. When I pulled out of the bay, the tire pressure warning light remained on and showed 29 PSI. I stopped immediately and informed the technician. He then stated he could not inflate the rear-left tire because he could not remove the valve stem cap due to corrosion. This was not disclosed before the vehicle was released. The technician told me I should drive the vehicle anyway and suggested I try removing the cap myself using pliers. No written warning or safety notice was provided. On December 16, 2025, while traveling on Interstate 81, I heard a pop/rattle and the vehicle became progressively louder. A warning displayed: “TPMS Malfunction. Have the vehicle inspected.” I continued driving until I could safely exit. The tire was shredded by the time I pulled over. The incident appears consistent with progressive deflation/underinflation leading to tire failure. The vehicle was released for highway operation despite the technician’s stated inability to service the tire at the valve stem.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11703823December 8, 2025
ELECTRICAL SYSTEM, FUEL/PROPULSION SYSTEM, UNKNOWN OR OTHER
It seems like the computer has defaulted to receive the lowest possible gas mileage- if this is somehow communicating with the fuel system- its definitely affecting how much mileage I could be getting and robbing me of up to 100 miles per tank.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11703502December 7, 2025
FUEL/PROPULSION SYSTEM, UNKNOWN OR OTHER
Car is forecasted to get 290 miles off a full tank after doing nothing but highway driving. 10 miles less than when I first drove it (off the lot and primary highway driving) and 60 miles less than it should according to Mazda statement of 21-30mpg.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11703397December 6, 2025
ELECTRICAL SYSTEM, UNKNOWN OR OTHER
It 1833 the doors did not autolock
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11703396December 6, 2025
ELECTRICAL SYSTEM, UNKNOWN OR OTHER
At 1833 yesterday evening, the doors did not autolock.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11703366December 5, 2025
ELECTRICAL SYSTEM, UNKNOWN OR OTHER
Dash button for lift gate not working. Occasionally the doors dont autolock Both of these things have happened multiple times since I drove the car off the lot .
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11703230December 5, 2025
SERVICE BRAKES, HYDRAULIC, AIR BAGS
The contact rented a 2024 Mazda CX-30. The contact stated that while driving at highway speeds, an "i-ACTIVSENSE Partially Disabled Front Radar Malfunction" warning message appeared on the instrument panel. The contact attempted to exit the highway; however, the vehicle failed to stop upon depression of the brake pedal. The contact continued to pump the brakes and even engaged the emergency brakes, but the vehicle failed to stop. Due to the failure, the contact crashed into the vehicle in front of her as the "Vehicle System Malfunction, Have the Vehicle Inspected" warning message appeared on the instrument panel. The air bags did not deploy upon impact. The contact later sought medical attention for pain in her back; the other driver sustained injuries; however, the injuries are unknown as she did not seek medical attention from the paramedics that arrived at the scene. A police report was filed. The vehicle was towed from the scene to an independent mechanic, where it remained in their possession. Neither the dealer nor the manufacturer had yet been notified of the failure. The vehicle was not repaired. The failure mileage was 38.377.
Crash:
Yes
Fire:
No
Injuries:
1
Deaths:
0
#11703142December 5, 2025
LANE DEPARTURE: BLIND SPOT DETECTION, VISIBILITY/WIPER
Although im confident in my own driving skills, it concerns me that the blind spots are so bad that it is NECESSARY to use the blind spot warning system and reverse/back up camera.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11703141December 5, 2025
ELECTRICAL SYSTEM
Iactive sensor indicated there was a/n (obstruction) or something preventing iactive from working (i dont remember what it said)? I dont remember- but either way- i find it distracting. It could not be turned off and was flashing repeatedly- telling me to drive safely ironically making me feel like I had to read it, in inclement weather, and take my eyes off the road.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11703137December 5, 2025
FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING, FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL, VEHICLE SPEED CONTROL
Warning sensors activate randomly- of oncoming vehicles- in my opinion for no reason. Enough space between cars. Normal speeds, etc. Warning sensor to engage Brakes activate without sufficient reason. More than enough space between cars, normal speeds. Occasionally, it feels as if cruise control has taken over and slows the car down (not braking exactly, but controlling the speed by decreasing it). Acceleration also seems to randomly be controlled in the same manner.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11703136December 5, 2025
ENGINE
I wondered if, after my first service visit on 11-12-25, the dealership put regular leaded gas instead of premium in it, because there was a noticeable difference in gas mileage and the engine started revving pretty high, in my opinion. It also seemed to have less power (which was my main reason foe thinking the wrong gas had been out in). And since then, it hasn't been the same.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11703134December 5, 2025
TIRES:PRESSURE MONITORING AND REGULATING SYSTEMS
At an unspecified service visit I Was told tires were at manufacturers recommended psi YESTERDAY - left the lot at 1530. The next morning - warning system indicated low psi- even as low as 30psi and front passenger so low it did not give a reading??? I have no idea why a service visit was even recommended at 1000 miles. Intake rep said for manufacturer oil change and maintenance?! 1000 miles? Bought 11-8-25?! So, if service visits are directly tied to software communication of the vehicle then, thats being reported too.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11703129December 4, 2025
FUEL/PROPULSION SYSTEM, STEERING, VISIBILITY/WIPER
I have noticed over 30 things wrong with this car. Including but not limited to- the FIRST THINGS I mentioned to the dealership there seems to be apull to the right (suspension/alignment). The car randomly starts driving or feeling 'jerky" as if cruise control has taken over - 'phantom braking' is a term I came across that sounds accurate to me. And now, after having the vehicle for almost 30 days- there is significantly less mpg.received. 300 first tank vs about 250 this current tank.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11699970November 17, 2025
UNKNOWN OR OTHER
Component/System: Automatic transmission (requires full replacement). The vehicle is currently located at Safford Mazda of Fredericksburg, 10653 Patriot Hwy, Fredericksburg, VA, 22408, and is available for inspection upon request. Safety risk: The transmission developed a loud whining and grinding noise while driving, indicating imminent risk of sudden loss of motive power or seizure. This creates a severe crash hazard, especially on highways or during acceleration/merging. Sudden loss of propulsion without warning can leave the driver unable to accelerate, maintain speed, or move out of harm’s way. The problem has been reproduced and confirmed by Safford Mazda (authorized Mazda dealer). On October 16, 2025, they diagnosed the vehicle as requiring a complete transmission replacement (Repair Order/Multi-Point Inspection Video is available). The vehicle has not yet been inspected by the manufacturer, police, or insurance representatives, but remains at the dealership awaiting parts. Starting approximately in late August, a transmission whine started zero warning lights or alerts ever appearing. Noise rapidly worsened. [XXX]: expert friend drove it once, instantly recognized imminent failure, and ordered me to stop driving immediately. At ~20,000 miles, the dealer confirmed the drive unit must be fully replaced, still with no dashboard warning ever triggered. Had I kept driving while trusting the silent system, this critical component could have seized at any moment, causing sudden total loss of propulsion at highway speed or in traffic with my young child on board. The complete absence of any alert during a proven, progressive failure is an urgent, unacceptable safety defect that demands immediate investigation and recall before a family is injured or killed. As of [XXX] , the vehicle has been out of service for 33+ calendar days. The dealer informed me I am #60 in Mazda’s national transmission replacement backlog. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11697636November 5, 2025
ELECTRICAL SYSTEM
The vehicle has a built in wireless phone charger. When the charger is used for for more than > 10 minutes, the phone proceeds to heat up to the point it burns your hand when you take it off the charger. I have spoken to the dealer and the service advisor says this is “normal” and occurs in a variety of car models. Then he blamed my phone, but my phone does not heat when using any other wireless or plug in charger. I am concerned that the excess heat will result in the battery exploding as we have seen with other phone charger and laptop charger devices. Perhaps they honestly do not realize this is an is an issue, but do we have to wait until someone is seriously hurt before it is addressed?
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11693587October 15, 2025
SERVICE BRAKES, AIR BAGS, FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING
While driving normally at highway speed on I-880 South, the braking system failed to decelerate the vehicle. When the brake pedal was pressed firmly, there was no normal slowing—only a sliding sensation, as if the wheels locked and the car moved forward on ice. This led to a collision with a stopped vehicle ahead. The following day, the Mazda App displayed a red alert message: “Brake system malfunction. Braking effectiveness may be decreased.” The vehicle’s airbags deployed very forcefully, causing bruising to both driver and passenger, even though the impact was not severe. Three days before the incident, the vehicle had a scheduled maintenance and recall service at a Mazda dealer, including a brake inspection and air-bag recall repair. The vehicle was declared a total loss by the insurance company and is currently stored at Copart Hayward, CA. The problem has not been inspected by Mazda yet, but a formal safety review is requested. The issue posed serious safety risks due to total loss of braking control and unexpected air-bag deployment.
Crash:
Yes
Fire:
No
Injuries:
2
Deaths:
0

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