How do you renew polo rear brake discs?

To renew the rear brake discs on a Volkswagen Polo, first, safely lift the vehicle and remove the rear wheels. Next, detach the brake caliper by unbolting it, and then remove the old brake pads and brake disc. Replace the old disc with a new one, ensuring it is properly aligned, and reassemble the brake caliper and pads. Finally, reattach the wheels, lower the vehicle, and pump the brake pedal to ensure proper function before driving.