Sauber will come back stronger next year following a difficult 2013, team principal Monisha Kaltenborn has promised.

The Swiss-based outfit struggled on and off track in the first part of the season, but secured its immediate future back in July after the announcement of a new partnership with a group of Russian investors. On track, the squad also turned its fortunes around, with Nico Hulkenberg doing particularly well in Korea and Italy, when he finished fourth and fifth respectively. Kaltenborn is now feeling upbeat about the future.

"A consolidating end to the season, which has been very difficult for the team," she remarked after seeing Hulkenberg and Esteban Gutierrez finish eighth and twelfth respectively in Sunday's season-ending Brazilian Grand Prix.

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"The team has shown its morale in this difficult situation and together we will come back stronger. The foundation for a successful second half of the season was a strong performance from everyone in Hinwil and the race team, which translated into success at the track.

"The race at Interlagos was typical of the season: despite a difficult starting point we were able to score four points and, therefore, have a satisfying end to the season."

Tom McCullough, Sauber's head of track engineering, meanwhile echoed those thoughts in his own post-race comments.

"After a difficult start to the season, we have improved our results in the second half. This was a team effort from everyone at the track as well as everyone back at the factory in Hinwil. They have all been working very hard to improve our competitiveness. A big thank you to everyone involved in that. We start a new era in F1, and that is now our immediate focus," he concluded.