Who really had trouble with the electronics of his car?

Hello dear car friends, am New here and not completely unselfish I would like to ask a question here? Did someone have trouble with his on-board electronics, so that it was safety dangerous or hilarious ? With my wife e.g. the car went out completely sporadic. And in some cases it was great luck that nothing happened. (If so by overtaking on the country road that goes out everything ….. my god !) She has been tens of times in different workshops and they have almost all the El ektronik renewed. That was quite expensive and finally she sold it because the error occurred again and again. So I drove the car about 5000 km without any problems until it caught me on a country road. And then nothing went on. he didn’t let himself start and you had to start so about 30 minutes, then he let himself start. but also this time was spontaneous. So my wife had to wait already several hours. Now to a question. For a documentary I am looking for those who are affected and, if possible, in the Berlin area. Who has the desire and courage to tell his story briefly, just a private message to me, I will get in touch immediately. Thank you and good ride!