Ok, guys, be nice

You have to understand something; this is the "Suggestions Forum". You didn't suggest anything, and indeed gave nothing but a description of a law. What are you suggesting? Did you try using the search function for this?
The lemon law would be mostly related to the factory part of the game, if it were to be implemented in some form. After all, you are not designing your own crappy parts, but perhaps having a crappy factory build them! So, were you to cheap out on your factory assets, perhaps such a thing could happen. However, as with almost all of these suggestions (nothing against you guys suggesting, just something to think about), this will add little gameplay value. Should there be penalties for going too cheap on the labor part? Yes! Should it be in this form? Probably not. The lemon law, after all, hardly impacts companies; nowhere near as much as recalls do. Thus, there could potentially be a recall-based penalty system for such a thing.