Why do cars use fuses instead of circuit breakers like homes use?

Cars use fuses instead of circuit breakers primarily due to space constraints and the need for lightweight components. Fuses are smaller, lighter, and less complex than circuit breakers, making them more suitable for the compact design of automotive electrical systems. Additionally, fuses provide a simple and cost-effective solution for protecting sensitive electronic components from overloads, as they can be easily replaced when blown. In contrast, circuit breakers are bulkier and may not withstand the vibrations and environmental conditions present in vehicles.