Wolff believes Mercedes have solved their issues and can fight in Barcelona

It had been a tough start to the year for the German team. There were no podium finishes until Russell's third place in Canada, and seven-time World Champion Hamilton had not finished inside the top five before his P4 last time out. However, thanks to some upgrades, they were able to turn their dismal start around, and Toto Wolff says his team has worked extremely hard to work these issues and can challenge at the Spanish Grand Prix this weekend.

Wolff hopes Mercedes have found what was 'missing in the jigsaw'

"There is there's no such thing as the 'silver bullet' in Formula 1," said the Austrian after the Canadian Grand Prix. "It was a constant work of understanding what was wrong, and I know that everybody got tired by this answer, but you can't reverse engineer the performance of the car and say, ‘We're looking at Red Bull and this is what we want our car to look like.’ You really need to work your way through the problems."

That work seems to have been done by the engineers and designers at Mercedes who have brought some pace to what was a car languishing behind Red Bull, Ferrari and McLaren. With these new updates, a repeat of the double podium that was achieved at the Circuit de Barcelona-Catalunya last year will be something Wolff and his team will be searching for, and he believes that they can challenge at the front thanks to the updates withdrawing the inconsistency from the W15.

"It didn't seem to correlate between the tunnel and the track, and the track and the car were difficult to drive right over. It was not good. We had the bouncing or bottoming coming back. Then we had a clear indication of what we were missing in the jigsaw, and we put the piece in and I think now it's gone," Wolff concluded.