United States GP: Sauber Sunday quotes

Kamui Kobayashi - 14th: "For the entire weekend here I had warm up problems and didn't get the tyres to work. We have to find out why this was. The grip level only increased in the last laps of the race at the end of a very long stint with the hard tyres. This was crazy and I do hope very much we are stronger in Sao Paulo to finish the season on a high."

Monisha Kaltenborn, Team Principal: "For our team it was a weekend with ups and downs, which was also reflected in the race. Sergio made a very good start and was 11th after lap one, with a chance to fight for points, but later he reported a brake problem and, as a result, lost positions. Kamui was never able to recover from his grid position. We have not given up the fight for P5 in the constructors' championship, but we will have a lot of pressure in Interlagos. However, we are taking this as an extra motivation. Congratulations to the people responsible at the COTA for building a great track and organising a great event for the many fans who were present today."

Giampaolo Dall'Ara, Head of Track Engineering: "This was a fairly difficult weekend for us. For some reason we were not able to exploit the potential which was there. Our main problem was to get the tyres to work, which was reflected in our qualifying performance. With Kamui we opted for an early pit stop, but we didn't benefit from that. Sergio had a very good first lap and therefore we went for a more standard strategy, but then he reported a long brake pedal. We spotted a problem, but we were confident on the safety side, because the travel soon stabilised. However, on the performance side we had to pay the price, particularly around the pit stop where we lost two positions to the Williams. We couldn't regain these positions."