It's asking whether a replacement on his specific car is worth it, given mileage and type. It seems a bit opinion-based to me, and the current answer is just a "yes, it's worth it; your car can last quite a while longer." On the one hand, that seems very subjective -- what's a while longer? On the other hand, it would be possible to make a good "no, it's not worth it" case, should there be one, where the argument was that it would cost (significantly) more to keep it than to get a different car. That would seem to be objective.