Posh have found life difficult back in the second tier and are yet to win in the league this term but Ferguson maintains the view that a winning run will be enough to push them into contention.
He said: "There will be a lot of draws in the Championship this season so any team that can string a few wins together will climb the table quickly.
"We have shown in the past we are a team capable of doing just that. Once we get our first win I am sure we will be and up running.
"It might seem a little strange right now to talk about challenging at the top but we have a history of getting better as a season progresses.
"The lads have been flying in training this week. They look fresh and lively and I'm confident of a good performance at QPR especially as we now have a fully fit squad."