Nico Hulkenberg is not sure whether he has done enough to secure his Formula 1 future with Force India for another season. read more »

McLaren's managing director Jonathan Neale says that the team doesn't know how effective Red Bull's engine map is after admitting the FIA's reaction in... read more »

Pirelli motorsport director Paul Hembery admits that he is not certain of how the Pirelli tyres will react in Hungary... read more »

Mercedes team principal Ross Brawn is unsure whether or not Michael Schumacher will be able to fight for a podium finish despite the German starting his home grand prix from... read more »

Sahara Force India made the most of damp weather conditions in Hockenheim as Nico Hulkenberg, Paul Di Resta and Jules Bianchi got the team’s preparations for Sunday’s German... read more »

Lewis Hamilton said the updated McLaren was "definitely a step forward" but that a lack of dry running prevented him from knowing how significant the improvement is read more »

Red Bull team principal Christian Horner cannot be certain that his team will set the pace in this weekend's German Grand Prix despite encouraging performances in the last... read more »

Mercedes-Benz motorsport boss Norbert Haug has labelled the uncertain situation surrounding Formula 1's young driver test as 'ridiculous' - with a number of... read more »

Renault says it is unsure what caused the overheating issue that led to the alternators failing on the cars of Sebastian Vettel and Romain Grosjean in Valencia read more »

Renault has confirmed that an overheating alternator caused Sebastian Vettel and Romain Grosjean's retirements from the European Grand Prix but it doesn't know what... read more »

Red Bull team principal Christian Horner said the team was unsure what caused Sebastian Vettel's retirement in the European Grand Prix read more »

Sebastian Vettel admits that he doesn't know if Red Bull will be competitive in Canada due to a lack of straight-line speed so far this season read more »

Sauber are still investigating the cause behind Sergio Perez's Monaco accident during the first stage of qualifying. The Mexican looked to have made an error at first... read more »

Ferrari technical supremo Pat Fry is confident that his team has made big strides towards catching Formula 1's pacesetters, but is unsure if and when it will get on level... read more »

Jenson Button, 1st: “The most important job today was to try and get a decent high-fuel long-run on the Supersoft tyre – which I don’t think... read more »

Already unsure whether the New Jersey race will take place next year as planned, Pitpass' business editor Christian Sylt now hears further evidence that all is not well... read more »

Kimi Raikkonen is upbeat that Lotus will be able to deliver a race-winning weekend this season, but he is unsure if it can do that as soon as the Monaco Grand Prix read more »

Both Sebastian Vettel and Mark Webber were unsure why they had problems with their front wings during the Spanish Grand Prix as the pair had to pit for new noses during the race read more »

Jenson Button is unsure where the speed he showed in Friday practice has gone after failing to reach the last segment of qualifying at Barcelona. read more »

Even though the teams are now all at Barcelona, Toro Rosso continued its test programme they started at Mugello, targeting aerodynamic evaluation. Overall, there is still quite... read more »

Force India is unsure if a new update package will be enough to lift its performance much at this weekend's Spanish Grand Prix. read more »

Vitaly Petrov questions the suitability of Mugello for modern F1 machinery despite admitting he enjoyed the challenge of driving the circuit read more »

Ross Brawn thinks it is too early to say whether Mercedes can deliver more victories this season, despite the nature of Nico Rosberg's dominant performance in the Chinese... read more »

Jaime Alguersuari has admitted he is not sure if he will be able to return to formula one in 2013. After his ousting at Toro Rosso, the young Spaniard is keeping up... read more »

Kimi Raikkonen has admitted he travelled to Australia recently unsure if he would be immediately back up to speed in Formula One. The 2007 world champion spent the last two... read more »