In the US, a vehicle with an outstanding recall technically isn't roadworthy, though consumer level enforcement of this is non-existent in practice. It's mostly enforced on dealers, who can't sell a vehicle with active recalls. The only way I can imagine it mattering to a consumer is if they sold it.
Doesn't being legally non roadworthy only apply to NHTSA safety recalls while there are other types of recalls for non compliance or manufacturer voluntary recalls?
I can imagine car insurance refusing to pay out in the case of an accident