How does the presence of brake fluid on brake pads affect the performance and safety of a vehicle's braking system?

The presence of brake fluid on brake pads can reduce friction between the pads and the rotors, leading to decreased braking performance and potentially compromising the safety of the vehicle. Brake fluid on the pads can also cause the brakes to feel spongy or less responsive, making it harder to stop the vehicle quickly in emergency situations. Regular maintenance and inspection of the braking system is important to ensure optimal performance and safety.