Australia captain Michael Hooper says his side must beat New Zealand on Saturday to show they are progressing.
The Wallabies have endured a mixed campaign and have already lost the annual Bledisloe Cup between the Trans-Tasman rivals following a crushing win in Sydney for the All Blacks and a spirited yet ultimately disappointing showing in Dunedin.
The third game between the two of the 2017 series takes place on Saturday at Brisbane's Suncorp Stadium and Michael Cheika's men head into the game in decent form, having finished behind the Kiwis in the Rugby Championship courtesy of their final-round win in Argentina.
Hooper will again lead the team into battle and says the steps they have taken in recent weeks shows him they can score a first win over the All Blacks since 2015.
"I think we have got a greater belief in our game and what we can do and we have also seen a lot of players step through and step up within that time as well," Hooper told the Australian Rugby Union's official website.
"I'm a big believer in what this team can do and it come downs to Saturday. It'd be great to beat the No.1 team in the world.
"That would do a lot of things for a lot of people and maybe change their perception but we're very positive of how things have been working in and around the team and the guys' commitment to the detail and to getting better. Tomorrow night's just going to be a reflection of that."