About the ignition failure.
Always check your car battery, even if it says 100%, click on it and check if it has power in it. For me it always says they have 0%remaining but the health of battery is 100%. And after i replace them the ignition failure is gone.
Idk if thats a bug or intentional but even if i set the car condition to very high all cars have depleted batteries and in consequence get ignition failure on all of them.
If you cant find a good battery use necroforge to spawn one for yourself.