> But I also don’t think there should be any requirement that they are forced to do additional work. That seems just as immoral.

I think that if you want to sell to the public, it is entirely moral to force manufacturers to do additional work. The trivial example is that we already force restaurants to do additional work to follow food safety and hygiene regulations. That is additional work they don't really have to do. If that's not amoral in the food industry, why would it be immoral for cars?