Sauber team boss Monisha Kaltenborn admitted she was disappointed after the Swiss squad saw its recent run of points finishes come to an end in India.

The team had picked up points in four straight races going into the Indian event but saw its hopes of adding to that tally ended by problems for both of its drivers.

Nico Hulkenberg had looked set to bring his car home inside the top ten with a solid run that saw him running in eighth place with less than ten laps to go.

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However, when he developed a braking issue, the team was left with no option but to bring the German into the pits to retire.

"Today I would have passed the finish line in eighth place," he said. "We don't know yet what happened. When I was braking into the last turn something clicked and all of a sudden my brakes were gone. Something must have been broken on the car. Following that I pitted and went out again, but something wasn't right. It is very disappointing."

Team-mate Esteban Gutierrez meanwhile had already seen his chances of scoring ended when he was penalised for jumping the start.

"This wasn't a great weekend, yet I gained valuable experience during the race today," he said. "Unfortunately, I made a mistake at the start and I paid for that with a drive through. We had a good pace today and I had good fights with Fernando and Roman. I enjoyed that. The car had a very good balance. At the end I struggled a bit on the options, but still I think if I avoid mistakes and we are able to qualify better we can for sure finish in the top ten again."

With no points on the board, team principal Kaltenborn said there were still positives to take away from the race.

"We are very disappointed, because Nico was clearly in the points before a technical problem forced him to retire," she said. "Even if this was a set back today, it is important for us to know that our competitiveness is still there. We are able to score points and still have a chance to improve."