Nico Hulkenberg believes Force India has the potential to beat Williams in constructors' championship this year, and has not ruled out overhauling Sauber, either.
Although Force India had a slow start to the season, the team has made good progress with its VJM05 car since then, with both Hulkenberg and team-mate Paul di Resta showing strong potential at numerous races.
Force India is only seven points behind Williams in the team standings and Hulkenberg thinks that further development progress can help lift it past its rivals.
"We already showed last year that our development speed is very competitive and I do not see a reason why we shouldn't be able to repeat that again," he told F1.com. "We're only seven points shy of Williams and I think we can catch them. I don't know whether it's possible to catch Sauber. It will be difficult, but the whole team will try their very best, that's for sure."
Sauber is currently sixth in the constructors' championship with 80 points, ahead of Williams at 53 and Force India with 46. Hulkenberg thinks that his team has punched above its weight in qualifying this year, but its form in races is more indicative of its real pace so far.
"Pace-wise we are still behind Sauber, Williams and all the front-runners," he said. "This means, that we have the chance to beat Williams, Sauber or Mercedes when our weekend goes completely smoothly and they struggle. In qualifying this happens more often, but in the race they have 50, 60, 70 laps to get their faster cars in front of ours. So our race pace actually shows us where we really are."