I think most of them are probably caused by deferred maintenance, which may either be the result of the owner making poor decisions, or a circumstance forced on them by poverty. In cases where the car is defective as manufactured, I have no sympathy for the company that made it. If that happens, I want the car company to pay for it. Which I believe generally happens. Car airbags blow up in your face because of a detective design? The car company has to pay to fix that. So your question has a false premise; we don't ignore deaths caused by faulty manufacturing. Usually anyway, some car companies seem to get away with more than others..