I agree that the number of cameras, and the same thing being the problem every time, if it is a full blown product failure, then it is the first time in about a decade i have seen that to this degree.
I do also think this will be more and more a problem with newer cars, both EV and traditional vehicles with some excuses crammed in like stop / go and maybe hybrids.
I am dreading getting a new car, cuz my next car will probably be a EV, fortunately it will be 2 - 4 years before that happen.
When it come to product challenges then i have seen them all ( knocking on the bottom side of my computer table ) and that have also been a roller coaster ride.
There have been people with really strange things going on and several people have tried for 4 pages on this forum to help the person,,,,, only to finally learn that he/ she was plugged into some in car USB port that was not strong enough to power the system.
There are " so many" little things in regard to system problems, and even old guys like myself often forget some of them, even if many i have posted the same answer maybe 50 times since day #1 on this forum.
Once i only used Kingston memory cards and had like 6 of them, but ! one of them was fishy it would not work in one dashcam no matter what, but another memory card identical to it worked just fine, and the problem card it also worked just fine in other cameras. just not that particular dashcam, Thats just one of the WTH moments i have had over the years.
My last memory card ( A Adata endurance ) when i tried it first it did not work, so i tested it, and found out the speeds it was giving was only 1/3 of what it was rated for, i then formatted it using SDformatter and that brought back the speeds, but the card still fail sporadic in the cameras i have tested it in since then,,,,, aside for my Dji Osmo action camera, where i hit it with 4K/60 FPS footage at much higher data rates than any dashcam i have can produce.
So that strange card now live in my action camera, even if 256GB in it is wayyyyy overkill for the little i use that camera.
Erratic dashcam behavior is mostly to blame on the memory card or the power source, thats my experience in short. and some of the most premium cards i have ever gotten was years ago and 64GB U3 cards priced where you could get the same in 256 - 512 GB today, and those damn cards i barely got to fill 1 time before they died on me.
For a moment turning me off premium memory cards even if RMA on both was effortless and fast.
