Australia had no trouble in disposing of Japan, winning 63-30 in a 12-try encounter in Yokohama on Saturday.
Two of Japan's tries were consolation scores in the final 12 minutes - when the Wallabies had clearly taken their collective feet off the gas.
Australia's nine tries include a hat-trick from centre Tevita Kuridrani and a brace by fellow midfielder Samu Kerevi.
Utility back Reece Hodge a perfect nine from nine with the boot.
The victory follows wins against world champions New Zealand and the Barbarians.
It was a clinical display against the 2019 World Cup hosts, Japan.
Kerevi's second provided the game's highlight, the bulldozing centre collecting a no-look pass from Kurtley Beale to cap a stunning move started by Henry Speight deep in Australia's own half.
Japan lost 27-47 to a world select side last week in a butter-fingered display, but ill-discipline cost the Brave Blossoms against the Australians, who scored further tries through Speight, Tatafu Polota-Nau, Nick Phipps and Rob Simmons.
Trailing 3-35 at half-time, Japan improved after the break with Wimpie van der Walt and Amanaki Mafi grabbing tries before Kazuki Himeno bundled over after the final buzzer to help Japan hit the 30-point mark.
But despite missing key players, Australia never looked threatened in what proved to be a gentle workout for this month's tests away to Wales, England and Scotland this month.
Tries: Van der Walt, Mafi, Himeno
Cons: Matsuda, Tamura 2
Pens: Matsuda 3
Tries: Kerevi 2, Speight, Polota-Nau, Kuridrani 3, Simmons, Phipps 61'
Cons: Hodge 9
Japan: 15 Kotaro Matsushima, 14 Lomano Lava Lemeki, 13 Timothy Lafaele, 12 Rikichi Tachikawa, 11 Ryuji Noguchi, 10 Rikiya Matsuda, 9 Shiro Tanaka, 8 Amanaki Mafi, 7 Kousaku Shinsuke, 6 Michael Leitch (captain), 5 Hell Uve, 4 Kazuki Himeno, 3 Takuma Asahara, 2 Shota Horie, 1 Keita Inagaki.
Replacements: 16 Atsushi Sakate, 17 Koki Yamamoto, 18 Asaeli Ai Valu, 19 Wimpie Van Der Walt, 20 Fetuani Lautaimi, 21 Yutaka Nagare, 22 Yu Tamura, 23 Sione Teaupa.
Wallabies: 15 Kurtley Beale, 14 Henry Speight, 13 Tevita Kuridrani, 12 Samu Kerevi, 11 Marika Koroibete, 10 Reece Hodge, 9 Nic Phipps, 8 Sean McMahon, 7 Michael Hooper (captain), 6 Ned Hanigan, 5 Adam Coleman, 4 Rob Simmons, 3 Sekope Kepu, 2 Tatafu Polota-Nau, 1 Scott Sio.
Replacements: 16 Stephen Moore, 17 Tom Robertson, 18 Allan Alaalatoa, 19 Matt Philip, 20 Ben McCalman, 21 Lopeti Timani, 22 Joe Powell, 23 Curtis Rona.
Referee: Nick Briant (New Zealand)
Assistant referees: Mike Fraser (New Zealand), Tim Baker (Hong Kong)
TMO: Ben Skeen (New Zealand)