Sauber should have achieved more - Kaltenborn

Sauber team principal Monisha Kaltenborn feels that the Swiss team did not fulfill its potential in 2015 and expects the Hinwill outfit to do better next season.

Sauber's season, and Kaltenborn's own campaign, got off to a bitter-sweet start in Australia as the pair's focus was pried away from racing and over to legal considerations when it was forced to deal with Dutch driver Giedo van der Garde's claims to a race seat with the team.

Felipe Nasr's fifth place finish at Melbourne was a good result however, but that was also as good as it got for Sauber in 2015.

When its rivals appeared to evolve over the course of the season, Sauber stagnated and championship points were actually few and far in between with a total tally of 36 points and eighth place in the Constructor's Championship.

Not surprisingly, Kaltenborn considers Sauber could have done better.

"In principle, I would say I am happy because in many ways we come back to where we usually are in the standings," she told Motorpsort.com.

"But, I think there is more potential there which we have to utilise next year. So I’m not totally happy."

In addition to Sauber's lack of development pace and efficiency, Kaltenborn also deplored mistakes by the team, urging it to look back and learn from the lessons it endured.

"I think that we have to be particularly self-critical; to say that here and there we could have done things differently.

"I know the people work very hard, and so this is not any criticism towards the team that is doing the work, because they have severe limitations.

"It is just that the overall outcome sometimes, wherever the mistake is made, shouldn’t happen, because that really ruins the chance that you have."

Three F1 seasons in one - Pirelli boss offers radical scheduling plan to save F1

Exclusive pictures of the Mercedes power unit