Charles Leclerc stunned favourites McLaren by seizing pole position at the Hungarian Grand Prix on Saturday as Ferrari teammate Lewis Hamilton described himself as useless and suggested he should be replaced.
The two teams said they had been reassured by Formula One's approach under chairman Chase Carey and his new management team, who had "brought a new culture of transparency to the sport".
Kubica won the race in his fifth attempt, his first three in the second tier LMP2 category, to become Poland's first overall winner since Le Mans was first staged in 1923.
Unlike the Australian GP, where the majority of drivers carried out only one pit-stop, of Sunday's second race of the season, at Sepang, Malaysia, will see at least two, says Raja Sen.
German carmaker BMW, which last week announced its exit from Formula One, has rejected an offer from team founder Peter Sauber to take over the team, Sauber said on Thursday. But BMW said they are still in talks to reach a deal with Sauber as well as other interested parties about the sale of BMW's 80 percent stake in the Formula One team.
Russell fastest in first Austrian GP practice as Dunne shines
Sauber are to follow Ferrari and champions Red Bull out of the Formula One teams' association FOTA in a broadening rupture over cost-cutting measures in the sport.
Seven-times World champion Lewis Hamilton appeared in Ferrari red for the first time outside of Italy as Formula One put on an unprecedented and spectacular 10-team season launch in front of 15,000 fans on Tuesday.
An Australian court has found in favour of Dutch driver Giedo van der Garde in his bid to force the Sauber Formula One team to let him drive for them this season.
McLaren's Oscar Piastri beat teammate and title rival Lando Norris in a rain-delayed Belgian Grand Prix to stretch his Formula One lead to 16 points.
Mexican Esteban Gutierrez will race for Sauber next season alongside Germany's Nico Hulkenberg, the Formula One team said on Friday.
Mexican test driver Esteban Gutierrez will replace sick compatriot Sergio Perez in first practice at the Indian Grand Prix on Friday, the Sauber Formula One team said.
Red Bull's reigning champion Max Verstappen will join the Australian on the front row.
Mexican Esteban Gutierrez will race with Swiss-based Sauber for a second season next year with Russian teenager Sergey Sirotkin signed as test driver, the Formula One team announced on Saturday.
Rwandan President Paul Kagame joined Max Verstappen on stage when the Red Bull driver collected the F1 champion's trophy for the fourth year in a row.
McLaren's Lando Norris edged out championship-leading teammate and Formula One title rival Oscar Piastri to take pole position for what could be a wet and chaotic Belgian Grand Prix on Sunday.
Team by team analysis of Sunday's Russian Grand Prix (listed in championship order):
Heidfeld, 30, and Kubica, 22, have scored 71 points between them this season with BMW now 38 points clear of fourth placed Renault in the constructors' championship.
Sauber's cars will sport the blue logo of Champions League finalists Chelsea from next week's Spanish Grand Prix as part of a deal between the Swiss-based Formula One team and the English Premier League club.
Swiss-based Sauber will take departed Toyota's place as Formula One's 13th team next season, the governing International Automobile Federation (FIA) said in a statement on Thursday.
George Russell took Mercedes' first win of the Formula One season in Canada on Sunday while McLaren's Oscar Piastri went 22 points clear in the championship after teammate Lando Norris smashed into him and retired.
The 23-year-old British driver has tested for McLaren and currently drives for Mercedes in the German DTM touring car championship.
The Canadian wants to return to Formula One after quitting BAR just before the Japan Grand Prix in 2003.
German Adrian Sutil will drive for Sauber next season, the Formula One team said on Friday, replacing Nico Hulkenberg who moved in the opposite direction to Force India last week.
Red Bull's Max Verstappen won the Qatar Grand Prix on Sunday with the battle for the constructor's title going down to next weekend's Abu Dhabi season-ender
Germany's Nico Hulkenberg has promised to do his best to help Force India beat Sauber in the Formula One constructors' championship even if it costs his future team millions of dollars.
The Formula One team confirmed that the Canadian will line up alongside Nick Heidfeld for the BMW Sauber F1 team in 2006.
Verstappen is third overall in the standings, 61 points behind Piastri who leads Norris by 15, and chasing his third win of the campaign to make up for retirement in Austria last weekend.
Sauber drivers Sergio Perez and Kamui Kobayashi were disqualified from the Australian Grand Prix on Sunday for technical infringements, after finishing seventh and eighth, International Automobile Federation (FIA) stewards said in a statement.
Sauber's newly-appointed Indian-origin Team Principal Monisha Kaltenborn, the first woman to reach this position in Formula One, says she is well aware of the competition her outfit faces from Sahara Force India.
BMW-Sauber will have to wait until the end of the 2010 Formula One season to change their name, a spokesman for the Swiss-based team said on Thursday. The governing International Automobile Federation (FIA)'s Formula One commission had agreed at a meeting this week that they could change their name at the end of the championship, the spokesman added.
Vasseur and his compatriot Nicolas Todt, son of Jean and manager of Ferrari's Monegasque driver Charles Leclerc, are close and founded the junior series ART racing team together.
Dutch Formula One driver Giedo van der Garde dropped his legal action against Sauber, allowing the team to race in this weekend's season-opening Australian Grand Prix without him.
Former champion Jacques Villeneuve will have his first test for Sauber in Spain this month after a seat fitting at the Formula One team's Swiss factory on Thursday.
Lando Norris celebrated his first Monaco Grand Prix win from pole position on Sunday.
F1 leader Oscar Piastri seized pole position from teammate and title rival Lando Norris by a hefty margin as dominant McLaren locked out the front row in Spanish Grand Prix.
Dutch driver Giedo Van der Garde recognised his hopes of racing in Formula One are over on Wednesday after Sauber paid "significant compensation" to end a contract dispute.
Lewis Hamilton will bring down the curtain on his Mercedes career in Abu Dhabi on Sunday as his past and future Formula One teams, McLaren and Ferrari, fight for a constructors' title to end years of waiting.
The win from fourth on the grid was Australian Oscar Piastri's third in a row, after Bahrain and Saudi Arabia, and fourth of the season. McLaren have so far been beaten only once.
After weeks of speculation, it was confirmed on Wednesday that Nico Hulkenberg will leave Indian Formula One side Sahara Force India and join closest rival Sauber for the 2013 season. The Swiss team announced that it has signed Hulkenberg for the next season.