The rear pads and rotors will typically wear out faster than the front brakes on a VW Jetta A5 and many other VW of the 2000s. The Volkswagens of this generation have electronic brake distribution, and under normal stopping conditions, the system will use the rear brakes more than the front. This prevents nosedive and makes for a more pleasant braking event. There is no cure for this. According to the repair information, Volkswagen has not released an updated calibration for the system. The front pads have electronic wear sensors, but the rear pads do not on most models.