Ferrari defeat not down to Marchionne's management style - Wolff

Marchionne was outspoken about Ferrari at times during its ultimately unsuccessful 2017 F1 title battle with Mercedes, including criticising the team during its reliability troubles and calling Kimi Raikkonen a "laggard".

Asked if he felt Mercedes benefited from the Ferrari president's bluntness towards his employees, Wolff acknowledged the differences in team management styles but played down their effect.

"Pressure can make a diamond, but pressure can also make a pipe burst," Wolff told Motorsport.com.

"Sergio Marchionne is one of the most successful businessmen that I have ever met, and somebody that has one of the sharpest minds I have ever seen operating.

"So far it [Ferrari's style] works for him and I don't think you can reduce Ferrari's 2017 season, or the end of the 2017 season campaign, to pressure that was applied. I think this is oversimplification."

But Wolff acknowledged that Mercedes made strenuous efforts to avoid a blame culture in its team.

"We encourage everybody in the organisation to speak up," he said.

"We have a motto that is 'see it, say it, fix it' which means that you have to create a safe environment for everybody to speak up. You need to be able to improve as a part of the team.

"What we try to do from the very senior leadership is to blame the problem and not the individual.

"It is easy to say 'well, that is what we do'. As a matter of fact, it is in human nature to try to identify a guilty person, it is easy because it is a pressure release - his fault.

"We're working really hard on not doing that because the moment you do that people close up like a shell and you won't see any innovation, you won't see any risk-taking.

"This is what we want - we are in a risk-taking business, an innovation business."