Not necessarily. Although it’s true that a car battery only lasts three to five years before needing to be replaced, the occasional dead battery doesn’t necessarily signify the battery is failing. If you accidentally left the headlights or an interior light on, the battery may drain overnight, but it doesn’t mean you need a new one. However, if you’ve had the battery a few years and it needs to be jump-started more than once in the span of a few days (without any obvious reason why it’s draining), it’s time to replace it.