Romain Grosjean is unsure what caused his off that led to the morning session of Formula 1 testing at Barcelona on Thursday being red-flagged just before lunch read more »

Haas boss Guenther Steiner is unsure whether the team's issues during winter testing are related to a wider problem with Ferrari's engine. Haas completed just 23 laps... read more »

Ferrari chairman Sergio Marchionne says the team is not sure it can accept the recent tweaks to Formula One's qualifying system. Last week F1 teams approved a plan to... read more »

Kimi Raikkonen says he is still unsure if Ferrari has the potential to beat Mercedes consistently after finishing day four of testing on top read more »

Felipe Massa is unsure as to whether the changes to the qualifying rules will make for a better show or just create chaos... read more »

Stoffel Vandoorne enjoys his two days in the McLaren MP4-30, but admits he doesn't know when he will next be driving an F1 car. read more »

Nico Rosberg says he does not know how he turned the tables on team-mate Lewis Hamilton to end the season with a run of success. read more »

Dietrich Mateschitz is losing patience with Red Bull's engine troubles, admitting he cannot say for sure that Red Bull and Toro Rosso will remain in F1... read more »

Sebastian Vettel is unsure as to why German fans stopped attending their country's Formula 1 grands prix... read more »

Daniel Ricciardo remains to be convinced that there is any point in running the uprated version of Renault's F1 V6 at this weekend's US Grand Prix in Austin. read more »

Renault will bring an upgraded engine to the Circuit of the Americas this weekend after using eleven of its twelve available tokens, but is unsure whether Red Bull or Toro... read more »

Pascal Wehrlein is still unsure where his 2016 future lies despite being linked with a move into F1, while Toto Wolff has revealed talks with F1 teams have happened. View the... read more »

Red Bull boss Christian Horner admits he is "a little bit in the dark" over when Renault's engine upgrade will arrive. read more »

Formula 1 drivers believe changes to improve drainage at Suzuka have made little difference after a day of wet practice for the Japanese Grand Prix read more »

Jenson Button has called Mercedes downfall "exactly what the sport needs" after the Brackley based team could only manage fifth and sixth in qualifying.... read more »

New Manor Marussia recruit Alex Rossi is hoping to use his five-race deal to show he is deserving of a full-time place in F1, although is unsure whether his chance of a 2016... read more »

Nico Rosberg will use his fourth power unit of the season at this weekend's Singapore Grand Prix, putting him in a dangerous position which could see him take a grid... read more »

Mercedes spent the remainder of its seven development tokens on its power unit ahead of the Italian Grand Prix, debuting its upgraded engine in the back of race winner Lewis... read more »

Felipe Massa says he s unsure why Williams suffered with poor race pace at the Hungaroring but is confident it can be limited to a one-off read more »

Force India is still unsure of the cause of the suspension problem that led to Sergio Perez's crash during Formula 1 practice at the Hungaroring, as the investigation... read more »

Nico Rosberg overcame hydraulic woes to set the F1 pace on day one of the British Grand Prix, but refused to rest on his laurels after an unusually hot day at Silverstone. read more »

Formula 1 world championship leader Lewis Hamilton is unsure which of Ferrari and Williams will offer Mercedes the biggest challenge at the British Grand Prix this weekend read more »

Ferrari driver Sebastian Vettel is unsure whether Formula 1 is making the correct decision with its planned Super Licence changes for 2016. Under the new… read more »

McLaren are to consider swapping Fernando Alonso and Stoffel Vandoorne's test days following the Spaniard's opening lap crash during the Austrian Grand Prix. The... read more »

Kimi Raikkonen admitted he was unsure on the reasons for his first lap crash with Fernando Alonso at the Red Bull Ring on Sunday. View the original post at Kimi Raikkonen:... read more »