What could indicate that a vehicle has a problem with its braking system during inspection?

The indication of a problem with a vehicle's braking system can be effectively identified through the presence of squeaking or grinding noises while braking. These sounds typically suggest that the brake pads may be worn down or that there may be an issue with the rotors. Squeaking can signal that the brake pads have reached a wear threshold, while grinding often indicates severe wear or damage that could impair the braking system’s performance.

Although other signs like the illumination of dashboard lights can also indicate possible brake issues, the sounds emitted during braking are directly linked to the mechanical and functional health of the braking system itself. Unchanged driving habits do not provide any indication of brake performance; they rather reflect a driver's behavior, which doesn't offer insights into potential mechanical failures. Therefore, the primary indication relevant in this context is the audible signs that arise when applying the brakes.