Which fluid, when low in the car, is known to cause accidents?

Brake fluid is critical to the operation of a vehicle's braking system. When the brake fluid is low, it can significantly impair the vehicle's ability to stop effectively. This can lead to increased stopping distances and, in emergency situations, may result in brake failure altogether. A lack of brake fluid compromises the hydraulic pressure needed for the brakes to function properly, posing a serious safety risk to the driver, passengers, and others on the road.

While other fluids like engine oil and transmission fluid are important for vehicle health and performance, they do not have the immediate impact on safety that brake fluid does. Low windshield washer fluid may hinder visibility in inclement weather but is not a direct cause of accidents. In contrast, insufficient brake fluid can have dire consequences, making it essential for safe driving.