Two more stage wins on the 50 kilometres of Nambucca and the shorter Valla test brought the Volkswagen driver's advantage up to 27 seconds over Mikko Hirvonen.
Citroen's Finn continued to do his utmost to keep in touch with Ogier, although a mistake near the end of Nambucca cost Hirvonen several seconds.
Thierry Neuville remains third for M-Sport, holding an eight-second cushion over Hirvonen's team-mate Kris Meeke.
Jari-Matti Latvala closed on Meeke's fourth place with a quick time on Nambucca, only to clip a bank and pick up a puncture on Valla.
That dropped Latvala behind Mads Ostberg into sixth, just ahead of his VW team-mate Andreas Mikkelsen.