This happens often. On a trip to Florida of 1200 miles, it happened 12 times each way. After being slowed in the right lane by a car in front driving slower tan my set cruise speed, I signal and move to an empty (in front of me) left lane. Instead of accelerating to resume my set cruise speed, the car decelerates abruptly by as much as 10 mph. If a car is following me and most logically is expecting me to accelerate after moving to the left lane, that car's driver is surprised and risks rear ending me. I took the car in to service this issue. Mazda has a Service Alert (SA-007/24. The conclusion of the SA is basically it is what it is. I think that this is a serious safety issue. I have a 2016 Subaru Outback with adaptive cruise control and it never does this. Maxda's system is deficient. The NHTSB should analyze and compare adaptive cruise control systems.

Source: NHTSA complaint ODI #11746021 · view all complaints for this vehicle at nhtsa.gov

Vehicle Information I am reporting multiple persistent safety-related defects in my 2025 Mazda CX-70 that began immediately after purchase and continue despite repeated service visits, software updates (including MSP66 on July 9, 2026), and good-faith repair attempts. These defects substantially impair the vehicle’s safety, drivability, reliability, and security. • Warning Lights & Phantom Braking: Brake messages and related warnings on the cluster appeared on the drive home from the dealership shortly after purchase, even with no obstacles present. Intermittent false warnings have continued. • Shifter / Transmission Behavior & Hard Shifting: Intermittently fails to engage Drive after Neutral (especially after car washes). The shifter moves to D but the vehicle remains in Neutral. Notable hard shifting and intermittent poor power acceleration have also been observed. Video evidence provided to dealer. • Door Lock & Latch Failures: Doors intermittently fail to lock or unlock via key fob or interior switches. Doors sometimes do not open when pulling handles. Auto-lock does not always engage. I have observed the vehicle automatically lock (audible sound and folding mirrors) only for it to be found unlocked the next morning. Passengers have been trapped inside on multiple occasions. These issues raise serious entrapment, safety, and theft concerns. • Hybrid System / i-Stop Malfunctions: Repeated MyMazda app alerts for “Hybrid system malfunction. Vehicle would not restart from I-Stop shut down causing me to have to put it back into park and restart the vehicle. • i-Active system failures: The i-Active system occasionally disengages even during clear weather. Dealership states this can sometimes happen due to direct sunlight and sensors? • During a previous discussion with Mazda Customer Care, they stated that they notes a previous power train failure on their end which I was unaware of.

Source: NHTSA complaint ODI #11752344 · view all complaints for this vehicle at nhtsa.gov

The vehicle has engaged the automatic braking feature multiple times while in a parking garage and when in the middle of a four-way stop despite there being no cross traffic or moving vehicles around my vehicle. In two instances, there was a vehicle behind mine that the breaking could have led to me being rear-ended and in the case of the four-way stop, there were other vehicles waiting to cross that could have hit me from behind or on the side. The vehicle was taken to the local Mazda dealership who had the vehicle for approximately 3 weeks trying to identify a fix and was subsequently told to pick up the vehicle without a fix being performed. I was informed after that time that Mazda was aware of this being an issue for multiple owners but did not have a solution to resolve it. I was told to wait to be contracted at some point in the future about an identified repair or recall. This is a serious safety issue that could lead to a collision and Mazda has stated that they do not have a solution to the problem.

Source: NHTSA complaint ODI #11736754 · view all complaints for this vehicle at nhtsa.gov

Multiple instances while driving on the highway with cruise control and lane keep assist on - on a bend slight turn the car veered into the other lane across the lane lines - even with other cars present. Additionally, it does not auto steer away from a blind spot collision - had I not noticed the car there would have been an accident.

Source: NHTSA complaint ODI #11749876 · view all complaints for this vehicle at nhtsa.gov

Incident details: While driving under winter road conditions, the vehicle experienced a brief slide. During this slide, the vehicle lightly scrapped a curb, leaving a minor mark on the wheel. Despite this, the airbags deployed unexpectedly. There was no collision, no rollover, and no other object was struck, and there is no visible exterior damage to the vehicle. ________________________________________ What component or system failed or malfunctioned, and is it available for inspection upon request? The suspected malfunction involves the airbag system, potentially including the airbag control module (ACM), crash sensors, or the electronic stability control (ESC) system. The airbags deployed without a qualifying collision or impact. The vehicle is being preserved and has not been repaired, and it is available for inspection upon request, with event data recorder (EDR) data preserved and available for retrieval.________________________________________ ________________________________________ Has the problem been reproduced or confirmed by a dealer or independent service center? No. A Mazda-authorized dealer (Mazda of Salem, Oregon) declined to accept the vehicle, stating that they do not perform post–airbag deployment investigations. As a result, the issue has not yet been reproduced or confirmed by a dealer or independent service center. I contacted Mazda of Hillsboro (Oregon), and the service center manager contacted the Mazda Experience Center on my behalf under case number 00404588. I was informed that the Mazda Experience Center advised them that the case would be closed with no further investigation. I was advised to take the vehicle to a body shop and to file an insurance claim. ________________________________________ Has the vehicle or component been inspected by the manufacturer, police, insurance representatives, or others? Mazda Corporate has been notified of the incident. The vehicle has not yet been inspected by the manufacturer, a dealer, law enforcem

Source: NHTSA complaint ODI #11711011 · view all complaints for this vehicle at nhtsa.gov

I had my car only for 4 months, but the windshield glass is broken when the car was parked on my driveway couple days ago I usually only drive my cars during weekends so the windshield glass broke without any forcing. I was asked to bring to Mazda dealer, the 495 Mazdas at Lowell MA. The technician couldn’t find any cause leading to broken windshield. I took the car to safelite shop. The inspection report is same and believe it is most likely due to quality issue. However Mazda service was not willing to repair. Very poor and disappointing customer support!

Source: NHTSA complaint ODI #11708501 · view all complaints for this vehicle at nhtsa.gov

Within 100 days of purchasing the CX70 new ,we noticed that the collision avoidance system was malfunctioning . It would alert when no car was near us . It did not alert every time a car was actually in our right blind spot or moving through our right blind spot . The malfunctions were random and happened in a variation of conditions and driving situations . We began to mistrust the system and continually disregarded many of its alerts . The old boy who cried Wolf sinerio.We took the car into a Mazda dealer in [XXX] ,FINDLAY MAZDA they told us that the system is malfunctioning but the software fix is not yet available from the manufacturer Mazda. We were told to wait for contact from Mazda to get the update . About two moths later we backed into a mailbox at slow speed and received no alert . This collision caused $600 damage to the right tail light . This incident prompted me to call Mazda customer experience to get our software update expedited. They resisted and continued with the unavailable narrative .I insisted and demanded a fix as this was a safety feature that is now an unsafe condition and also it is a very expensive feature on this car that we paid for and have not had the use of for several month to that point . A service appointment was arranged at Alan Webb Mazda in [XXX] . By the time of the appointment there were two other service recalls that needed to be accomplished on the vehicle so I approved that works also but the repair of the collision avoidance system was my primary concern and also Mazda had agreed to replace the tail light if in fact the system had malfunctioned . The next day the vehicle was ready for pickup (July30, 2026). When the vehicle was picked up at the service dept. I was told that there were no problems with the collision avoidance system . As of Aug 1,2026 the system is still malfunctioning in the same way as the two previous complaints . I believe they are hiding the truth about vehicle safety features. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Source: NHTSA complaint ODI #11760122 · view all complaints for this vehicle at nhtsa.gov