Australia will face their sternest test to date when they continue their autumn tour against a "world-class" Scotland team at Murrayfield on Sunday.

That is the view of forward Will Skelton, who believes the Wallabies' victories in England and Wales have brought a new energy and confidence to their camp.

Having crashed out in the pool stage at last year's World Cup in France before finishing last in the Rugby Championship, Australia have looked a team reborn in recent weeks.

A first victory at Twickenham since 2015 and a 52-20 rout of Wales – their biggest-ever away win in matches between the teams – have made it an excellent tour to date for Joe Schmidt's side.

But La Rochelle lock Skelton feels their toughest assignment is to come this week, saying: "We've won two games, we're very aware of that.

"The Test against Scotland is going to be the hardest one yet. We're excited about this weekend and we're looking forward to ripping into it.

"Physically they're up there with the top five in the world. I think set-piece wise they're really strong.

"You've got a guy like Finn Russell who's a maestro at the back there. I think it's going be a close one and we'll be up for it.

"There's some class players in the Scottish team and, when they're at it they're world-class, so we're going to have to be on top of our game."