Nico Rosberg insists Mercedes could be behind Ferrari despite its impressive pace in pre-season testing.
Mercedes completed the most mileage throughout the eight days of testing by some distance but was only fastest on one day while Ferrari set the pace on five occasions. However, Rosberg's pace-setting time came on the soft tyre and was just 0.3s slower than the best Ferrari lap which was set on ultrasofts.
Despite not showing Mercedes' comparable pace on the faster tyre, Rosberg says the informations Mercedes has suggests it could actually be slower than Ferrari come Melbourne.
“No they’ve been very quick, for sure," Rosberg said. "And all the teams have their strategists so we know what fuel all the others are running and they know our fuel so we know more or less where we are compared to Ferrari. That's why I say it’s close, but we‘re not sure if we are ahead or behind.”
And Rosberg says he is not concerned Mercedes has no data on the supersoft and ultrasoft tyres, with the new compound not set to debut until Monaco.
“Well there is a potential small downside but at the same time is it really representative? Because here you have 20 degrees which is completely unrepresentative, the track is not a track where you are going to be running those soft tyres because this track is not made for that so it’s limited.
"I'm sure they really thought about the tyre choice they made for testing and this was the way to go.”
ANALYSIS: The two F1 pre-season tests in numbers
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