Something malfunctioned with the brake system of the car. The car was in park and off. I exited the car, reached back into the car for an item, and shut the door. I then walked up the driveway and to the front door. At that point, the car began to roll down the driveway. Someone coming down the road in front of the driveway hit it on the front passenger side. The car then continued to roll across the street and part way up the driveway across the street, coming back across the street and then ran into the same car that hit it. I was then able to open the car door and get inside. It was still off and in park. I depressed the brake pedal, started the car, put it into drive, and moved it to the side of the street. After the incident, I tried multiple times to replicate the incident with my car. I tried leaving it in reverse, even though I know it was off and parked. I also tried leaving it in neutral and turning it off, even though I know it was off and in park. Each time, the car began to roll immediately. There was no way that I could have done what I did that day, which was to step out, reach back in to get a bag, shut the door, and then walk away. The car was definitely off and parked when it happened. The vehicle is currently at a Mazda authorized repair shop, and I am awaiting the final word on whether or not they can detect what exactly caused the brakes to malfunction. There were no warning lamps or messages prior to the issue; however, I did notice that something seemed to be going on with the screen of the car prior to the incident. though the clock was set to the correct time, the screens auto-sensor for day and night mode was not functioning correctly. (When it got dark, the screen was still staying lit up brightly. I confirmed that it was on "auto" mode, and it should have dimmed since it was after 9:30pm and dark out, but it didn't. I had to manually switch it to "night" each time it was dark.)

- Virginia Bch, VA, USA

The most recent incident: Driving 35 MPH on a 4 lane divided boulevard, vehicle 5-6 car lengths in front of me indicates intention to turn right. No traffic in lane to my left should I need to change lanes. I continue to coast. At approximately 2-3 car lengths, the vehicle in front has nearly completed the right turn - there is no risk of collision - but my car BRAKES HARD. This is the 4th time my car has activated emegency braking in a situation it is not warranted. I have been dirving for 36 years with no accident. I do not need nor want this technology as it is more prone to causing accidents than preventing them. Additionally, the car throttle response is slow to recover in these situations, so while I mashed the acclerator to the floor to avoid being rear-ended - the car did not accelerate for 1-2 seconds (RPM went up, but the engine did not engage for several seconds). In situations where AEB might have been marginally helpful, detecting cross traffic running red lights, the car has NEVER detected this - and thankfully I'm an experienced driver so AEB was not needed. This technology, IMO, is not safe and will lead to over-reliance causing more accidents in the future.

- Littleton, CO, USA

I had coplained about a long, soft brake pedal on 10 February 2024 to Hiley Fort Worth Motorcars and got a report on 13 February 2024 stated that after inspection, they could not duplicate my complaint, so they did a visual inspection and washed the car!!!! Today, 29 May 2024, I had to make an emergency stop and pressed the brake pedal to the floor! The ABS came on, but the brake pedal should never reach the floor. The other car had stopped and I swerved out of the way. No warning lights came on nor sounds. Additional information; if the brakes are applied by the adaptive cruise control, and you step on the brake pedal after the brakes have been applied automatically, the brake pedal is nice and firm, like it should be. But if there is no intervention with the car, the brake pedal is very long and soft.

- Fort Worth, TX, USA

I have a 2024 Mazda CX-5 but this is in any model and year that has the Adaptive Radar Cruise Control. When you set the distance you want to follow the vehicle in front of you, you will go the speed you are going until you come to the space you have set for the vehicle in front of you. Your vehicle will slow to match that vehicles speed. If that vehicle slows down, you will slow down. What it doesn't do it turn on your brake lights so the vehicle behind you knows that your vehicle is slowing down. Sometimes if the vehicle in front of you slows down fast, so does your vehicle. You have no control how fast it does that, it just does it. Now if the vehicle behind you doesn't realize that your vehicle has done this, well it has been very close two times so far. I do not want my new car rear ended. I did not know it did this with the brake lights and Mazda doesn't tell you that you have no brake lights when this happens. Why would they have a setup like this. It is like brake checking the vehicle behind you. I do not use my cruise control for that reason. It would be nice to be able to use it on a new car but I do not want to get hurt or get someone else hurt by doing so. I did contact Mazda and they know it does that. This is what they told me "Case Number [XXX] ? Hello. My name is Dominique. I am sorry that you have had some very close calls while slowing down while vehicles were behind you. As for the question you had asked about cruise control activating the brakes when your vehicle starts to slow down, it does not activate the brake lights. It is just like when you are driving without cruise control and you go to take your foot off of the gas pedal instead of using the brake to slow down, it would not activate brake lights either unless you actually mash the brakes, the same with cruise control.?Thank you for being a part of the Mazda family.?" Isn't that great. I am now a safely hazard or at least my vehicle is, and they are all like that. Who knew. Not me. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFOR

- Colorado Springs, CO, USA