Mercedes driver finished behind both Scuderia cars in P2
Friday 5 June 2015 22:49, UK
Nico Rosberg admits "Ferrari looked pretty close" to Mercedes during Friday practice ahead of the Canadian Grand Prix.
The German finished a rain-curtailed Practice Two in fourth place, behind both Sebastian Vettel and Kimi Raikkonen who spilt the Mercedes cars.
Ferrari have introduced an upgraded power unit this weekend and Rosberg says their pace looked impressive in Montreal, but wants to dig further into the detail.
"Ferrari looked pretty close so we need to look into that," Rosberg told Sky Sports F1.
"I haven't spoken to the engineers yet to know what their real pace is relative to us because we always know what their fuel amount, how much they were turning up their engine, we can see all that. So that means much more than the actual times."
Vettel finished the day in second, three tenths off the pace set by Lewis Hamilton, but the German is hoping there is more to come from Ferrari.
"They [Mercedes] are quick, we know that and anything else would be a surprise," he said.
"Of course we will take it, but I think we have to wait. It was a rushed programme for everyone and then it is not so clear what everyone is doing in terms of fuel load. So we have to be cautious, but I think we can still improve and then we will see what happens on Sunday."
The Scuderia spent three engine tokens on their new power unit for this weekend and Vettel was impressed with how it performed out of the box.
"There was no easing in, we went flat out straight away," he added. "Obviously time is very valuable so we tried to get as much information as soon as possible and everything seemed to be working as expected."
Some drivers seemingly struggled to get their tyres into the correct operating window in the cool conditions in Montreal, but Raikkonen feels it will be better than the previous race.
"Obviously there is still work to be done on that side, but it is easier here than in Monaco," the Finn said.
Canada has proved a difficult venue for Ferrari in recent seasons, with their last victory in Montreal coming back in 2004.
