From a purely ethical standpoint, the dilemma presented by the self-driving car scenario is a classic example of the Trolley Problem, highlighting the tension between utilitarianism and deontological ethics. Utilitarianism, which prioritizes the greatest good for the greatest number, would suggest that the car should swerve to save the five pedestrians, as this action results in fewer overall deaths. In contrast, a deontological perspective, emphasizing the moral absolutism of not actively causing harm, would argue against swerving, as it would directly cause the death of one passenger.

While utilitarianism provides a compelling case for minimizing harm, deontological ethics underscores the moral imperative against actively causing death. However, the scenario forces a choice, leaving inaction equivalent to allowing five deaths. Considering societal implications and the potential programming of autonomous vehicles, a utilitarian approach often prevails in maximizing overall well-being.

Thus, the ethical decision, leaning towards utilitarian principles, would be for the car to swerve, sacrificing one to save five, though acknowledging the deep moral complexity and disagreement such a decision entails.