Rosberg says some secrecy has to remain in F1 title battle

Mercedes motorsport boss Toto Wolff suggested after the Austrian Grand Prix that the team risked its overall form suffering because its drivers were withholding information or disguising theirtrue pace in practice.

But Rosberg, who bounced back from being knocked off the front row by Williams to win at the Red Bull Ring, reckons that there is little to worry about in what is happening between him and Hamilton.

"It is all open," said the German, who leads the drivers' championship by 29 points from Hamilton.

"The data, everything, is open. It is just sometimes you are not going to put it on the table and say: 'look, here is what I have done.'

"If I find a little bit of an advantage somewhere then I am not going to tell everybody about it, I will keep it to myself. There are little bits and pieces."

Despite some flashpoints off track this year especially at the Spanish and Monaco Grands Prix, Rosberg and Hamilton's rivalry has not boiled over in to an on-track clash yet.

And Rosberg is adamant that the pair have a good enough understanding of what the team wants from them for matters not to get out of control.

"In the background we are racing for the Silver Arrows and everything is free, because as a team we need to be strong," he said.

"We are strongest when we work together and we do work together. And it will continue to be like that.

"But at the same time we are fighting each other so when we can get a bit of an advantage over the other we will take it."