The Milton Keynes-based team have dominated in the teams’ standings for the last four seasons, but over the opening nine races of the year have scored just over half the points total of the Silver Arrows. And Vettel, 95 points behind leader Rosberg.
Even as his new team-mate Daniel Ricciardo is third in the standings but Vettel feels that the team still have plenty of work to do in the second half of the season.
“Right now the gap is very big and we haven’t really closed the gap since race one,” Vettel, who has scored podiums in Malaysia and Canada, told Sky Sports News, at the just-concluded Silverstone test.
“It has been up and down this year. Obviously we have tried lots of stuff to improve, but they (Mercedes) are doing the same thing.
“We are waiting for bigger steps to happen to close the gap even more which I think at the end of the season we can judge a lot better – then we know what we can do over the winter.”
“Obviously we hope for a smooth weekend without any problems, and to try and get the best out of myself and the car,” he said.
“It would be very special to finish on the podium there,” he added.