What is likely to happen when brake fluid levels drop significantly?

When brake fluid levels drop significantly, the primary consequence is that the brakes may become less effective or fail. Brake fluid is essential for transmitting force from the brake pedal to the brake components. It allows the hydraulic system to function properly. When there is insufficient brake fluid, air can enter the brake lines, leading to a spongy or unresponsive brake pedal. This can result in a reduced ability to generate the necessary hydraulic pressure to effectively engage the brake pads against the rotors, ultimately compromising the braking performance and potentially causing total brake failure in severe cases. Maintaining appropriate brake fluid levels is crucial for safe vehicle operation, ensuring the braking system can function as intended.