MAZDA Complaints

If any liquid or debris material enters the console cover area where many controls for the car are located, the “command switch” (as described by the Mazda dealer) underneath is destroyed. Many items are affected as noted above (some of which I could not check off). They have not responded as to whether some type of shield or even tape could be used to prevent this fault.

Cracked Cylinder Head Verified by Mazda Dealer . Noted it seems to be a very common problem with Mazda cx9 2018 models and has Multiple TSB on issue so I kept very close eye on car and took it in as soon as I smelled burning smell suggesting a leak , before the car had the chance to overheat and put myself and kids in danger. My car is under 40k miles for a 2018 with consistent maintenance - this is known problem since 2021 and needs to result in a recall.

The contact owns a 2021 Mazda CX-30. The contact stated that while the contact's wife was driving at an undisclosed speed, several unknown warning lights illuminated. The contact stated that the vehicle decelerated to 20 MPH. The contact's wife drove the vehicle to a safe location and parked the vehicle. The vehicle was towed to an independent mechanic, but the mechanic was unable to duplicate the failure. The contact stated that the independent mechanic reset the codes and the vehicle operated as intended; however, the failure recurred. The vehicle was taken to the dealer and the contact was informed that the battery needed to be replaced. The battery was replaced but the failure reoccurred. The vehicle was taken back to the dealer where it was diagnosed with a failed MAP sensor. The contact was informed that the MAP sensor needed to be replaced. The vehicle remained with the dealer for nineteen days and the MAP sensor was replaced. The vehicle was repaired; however, the failure reoccurred. The vehicle was taken back to the dealer where it was diagnosed with needing a software update. The vehicle was at the dealer for another 34 days and the software update was completed and the PCM was replaced. The vehicle was repaired but the failure reoccurred. The contact stated that the failure had been persistent. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The manufacturer was made aware of the failure but provided no assistance. The failure mileage was approximately 36,500.

The Mazda 5 was in a minor collision. The vehicle rear-ended another vehicle in stop-and-go traffic. Both vehicles were in motion, approximate speed of the Mazda 5 was 15MPH or less. The front seat airbags deployed. The other vehicle had rear bumper damage but the Mazda 5 immediately had smoke and flames under the hood. Thankfully, all four occupants immediately exited the vehicle to safety. The Mazda 5 quickly burned completely. Police and firefighters came to the scene and everyone agreed that the Mazda 5 fire was not commensurate with the extent of the collision and likely speed of impact. I am concerned there was a major safety defect that caused it to be engulfed in flames.

-cylinder head cracked resulting in leaking and burning oil from rear of cylinder head by exhaust manifold. Car has since been repaired by Mazda, but pictures are available from the incident. -Car was unsafe to drive due to leaking oil all over road (Environmental risks and hazard to others), black smoke and burning smell circulated into cabin via AC (health risks to passengers). Prolonged driving in this condition would have resulted in loss of oil and further damage to the car and others. -Car was towed to independent service center then subsequently towed to Mazda dealership -Mazda dealership inspected and confirmed that it was a manufactured defect that they have seen with other cars. Mazda has a Technical Service Bulletin (TSB) issued as well. -No warning lamps appeared prior to observed smoke and leak, though it was noticed that the car did jerk slightly at times when stopped at a traffic light

Mazda has a known technical service bulletin [XXX] which has numerous engine cylinder heads which leaks coolant causing the engine to overheat without warning. On new cars. Mazda knows it’s an issue and has not pushed this information down to its consumers. [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

My car started leaking coolant around [XXX]. It did not gave me any alert the car was heating up. My eldest brother was the one that notices. I took the car to the dealership and they are telling me I need a new engine. Now I'm googling and I'm seeing a big number of people reporting same issue. The dealership refuses warranty because is up to 60k miles and mine has 72k miles. However many people are having same issue on where the metal in the cylinder head isn't strong enough to support the weight of the turbocharger. I'm seeing complain in the internet since 2016 and Mazda has done nothing to fix this issue. Please go to for reference: [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

The contact owns a 2005 Mazda MPV. The contact stated while driving 45 MPH and depressing the brake pedal, the brake pedal was depressed to the floorboard and the vehicle failed to come to a complete stop. As a result of the failure, the contact crashed into a tree on the passenger side of the vehicle. The driver's side air bag deployed; however, the passenger’s side air bag did not deploy. No warning lights were illuminated. A Police report was filed, but no injuries were reported. The vehicle was not taken to the dealer or an independent mechanic. The vehicle was not repaired. After investigating the failure, the contact related the failure to NHTSA Campaign Number: 19V781000 (Air Bags). The contact stated that the VIN was included; however, the vehicle had previously been repaired by the dealer. The manufacturer was notified of the failure, and a case was opened. The failure mileage was 251,000.

Cracked cylinder head, August 2023. I'm not sure if it's a safety hazard, but it seems that oil being sprayed around a hot engine could be a fire hazard. Also, since the oil light comes on with no warning, it could cause people to have to pull over on a busy interstate because you shouldn't drive with the oil light on. I had almost 14,000 miles on my 2022 Mazda CX-5 when the low engine oil light came on. I had recently had an oil change done, so the oil should not have been low. I put oil in it and drove it to the dealership. They discovered oil sprayed everywhere in the engine compartment, and discovered the cracked cylinder head. It is a known problem. The car was still under warranty so they replaced the cylinder head. There have been no changes or improvements to the cylinder head, so theoretically the replacement cylinder head could also eventually crack.

During cruise control engagement when passing a larger vehicle the system sometimes will execute aggressive braking potentially causing an accident with a vehicle following behind. Have to be ready to disengage cruise control during all situations with other vehicles in proximity. It will always perform the aggressive braking maneuver when passing a semi-truck on a curved highway.