Audi A6 Quattro noise from brakes possibly related to rotor issue on Audi A6 Quattro

Some Audi A6 Quattro owners report experiencing brake noise issues, often linked to rotor problems that may require attention. These owners have noted that rotor concerns can lead to grinding noises, particularly when surface rust from debris like sand and rocks accumulates, causing grooves in the rotors. Additionally, unusual brake noises or behaviors are warning signs that should not be overlooked, as they may indicate malfunctioning systems that could result in costly repairs if neglected. Some drivers have also experienced vibrations or pulsating sensations while braking, which could suggest warped rotors, while a spongy brake pedal may indicate air in the brake lines. Furthermore, brake noise can arise from worn or contaminated brake pads and misaligned calipers, leading to squealing sounds. To resolve grinding noises stemming from worn pads and metal-to-metal contact with the rotor, replacing both the pads and rotors is typically necessary.