But Rosberg still doubt over the Mercedes race pace, last two races the German start from the Pole, but he can’t achieve podium following rear tyre degradation problem. Tomorrow his team-mate Lewis Hamilton will share the front row, now Mercedes get a chance to achieve top podium for this season.
"I'm just very happy starting first. In Barcelona we were still struggling a lot in the race, I was 70 seconds behind the race winner by the end of the race. We're improving, it's difficult to understand the tyres and get the most out of it.” Rosberg said.
“We're improving step-by-step but there are still a lot of question marks remaining. Here I'm sure we've made a step forward but it's still going to be difficult for us tomorrow, definitely. It's still our weakness, but we can make the best of it and who knows you can always have a few surprises."
"It could have been a lot easier out there today, the conditions were all over the place," he added.
"As soon as it started drizzling again the lap times became a lot slower on the inters so it was really difficult and changing so much. So you really have to be out there at the right time on the right tyres, especially in Q2 changing over to slicks, but I'm really happy.
"Everything went to plan and the last lap was OK so it's great to be on pole again, especially in Monaco. If it's at any track then it's this track where it makes a difference."
