Nico Rosberg says Mercedes has used the time since the Canadian Grand Prix to try and make its car "bullet-proof".

Both Rosberg and team-mate Lewis Hamilton ran in to trouble at the same time of the race in Montreal when they lost drive from their MGU-K and Hamilton soon had to retire with overheating rear brakes. Rosberg admitted he was pleased to finish second and extend his championship lead but says Mercedes has been working hard to avoid a repeat of the reliability issues.

"Although it was a really, really tough day, I'm pleased with the result in Montreal," Rosberg said. "The car was strong throughout the weekend, so to have the problems we experienced in the race was not what we expected. It just goes to show that you can never be too well prepared and our priority has been to make sure the car is bullet-proof for the rest of the season.

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"When you take everything into account, finishing second in that race was quite an achievement for everyone in the team. But we know we cannot afford to slip up, as our rivals are always there to take advantage."

And Rosberg is looking forward to the challenge of learning the Austrian track next weekend in an F1 car having only previously raced there in junior formulae.

"I'm looking forward to the next race in Austria and a chance to get back to our winning form once again. Although I've driven the circuit before, that was more than ten years ago in F3: back when it was still called the A1 Ring!

"Of course, it will be very different in a Turbocharged, V6 Hybrid Formula One car, so it's basically like starting from scratch for everyone on the grid. Personally, I love that kind of challenge, so I'm excited to get back in the car and go for another top result."