2023 MAZDA MAZDA3 Unknown Or Other Problems

My 2023 Mazda 3 started to have a more terrible and annoying rattle after 3000 miles. The engine will resonate and knock when it reaches a certain speed. The slow speed light throttle acceleration rattles. The most annoying thing is the multiple rattles inside, dash, door panels, and roof. It is like a can in the summer. What’s more terrible is that in the winter, its internal door panels, windows, and dash make a knocking sound like a screw is loose. I went to multiple Mazda dealers and it was obvious that they could not find and fix the issue. They either said they didn’t hear it or said it was a "normal noise". This is disappointing and unacceptable.

The contact's daughter had rented a 2023 Mazda Mazda 3. The contact stated that while his daughter was driving at approximately 70 MPH, the vehicle veered off to the left side of the highway and side-swiped a cable system; the vehicle then crashed into the end cap of a guardrail. The vehicle then hydroplaned and hit a bridge pillar. The vehicle flipped as the contact's daughter was ejected from the vehicle and the vehicle landed on the roof in the grass next to the guardrail. The cause of the crash was unknown. The vehicle caught fire and was incinerated by the time authorities arrived on the scene. The contact's daughter was pronounced dead at the scene. The fire department extinguished the fire and a police report was filed. The guardrail, cable system, and a wooden road post were damaged due to the accident. Due to the extent of the fire,...

It is the infotainment system but please, hear me out. The manual states that one is able to change channels by using the controls on the steering wheel. That is not the case. It actually is another feature NOT described in the manual. So now in order to change the channel, one must take their hand off the wheel and fidget with a selector and look at a screen (and also hope they are in the right menu section). This is not how most cars with this capability act. This is something that even the manual doesn't describe. This is a hazard, albeit not spontaneous because it leads to distracted driving. I've been to the dealership twice about the issue. I've contacted Mazda corporate. There are anecdotes of others having the same complaint and how this is a hazard. My complaint to Mazda Corporate and the dealership requests to Mazda...