Three problems related to brake disc pads have been reported for the 2000 Audi A4. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2000 Audi A4 based on all problems reported for the 2000 A4.
Passenger front brake pad sepatated from the metal backing plate while within service specification (0. 25 in of pad) and resulted in long braking distances and greatly reduced pedal pressure. Pedal pressure could not be recovered under repetitive brake actuations. The car became unsafe to operate at any speed. There was no warning before the failure. Audi of America refuses to replace the defective part under Audi assured warranty stating that this is not related to a manufacturers defect.
During highway driving in the rain, water develops on the brake pads/rotors, causing the delay in braking. Water buildup seems to occur after about 2 minutes of driving in moderate or heavy rain. Braking delay is about 1. 5 seconds. When brakes grab, they sometimes grap unevenly, pulling the car to one side or the other, until all 4 corners have cleared the excess water. . . Then normal braking response resumes. I have worked as a professional driver, driving different vehicles over long distances. . . This is not normal!!! I know from on-line forums that Audi has not diagnosed the problem, and as such, does not have a fix out yet. I tried replacing brake pads, this did not help.
While traveling consumer heard a noise. The next day, a technician serviced the vehicle and found a part of the brake pads broke off.