A broken-down car refers to a vehicle that is unable to operate due to mechanical failure or other issues. Common reasons for a car breaking down include engine problems, flat tires, or a dead battery. When a car breaks down, it may be stranded on the road, requiring assistance for repairs or towing. Drivers often rely on services like roadside assistance to help with a broken-down car. These services can provide help such as jump-starting a battery, changing a tire, or towing the vehicle to a repair shop. Proper maintenance can help prevent breakdowns and ensure a car remains in good working condition.