Formula one

World championship leader unwilling to fuel speculation but is unconcerned by uncertainty over future.

Silver Arrows have introduced major upgrade package as they look to rediscover edge over Ferrari.

Bottas won his maiden F1 race at the Russian Grand Prix on 30 May.

Two-time world champion says he will be 'more than happy to talk to anyone' in pursuit of wins.

Red Bull Racing have promised major upgrades to their car at the Spanish Grand Prix.

Three-time Indy 500 winner expects Alonso to improve further ahead of race on 28 May.

Three-time world champion lacked pace in Russia and team says there will be no quick fix.

Bottas won his maiden F1 race at the Russian Grand Prix on 30 April.

Carey was appointed CEO of F1 after Liberty Media's takeover in January.

Spaniard completes hour of running to qualify for practice ahead of race on 28 May.

Valtteri Bottas secured his maiden Grand Prix win in Russia while Lewis Hamilton finished fourth.

Hamilton endures problems throughout Sochi race and trails Vettel by 13 points in the title race.

Kimi Räikkönen joins four-time world champion in first qualifying one-two for nine years.

Valtteri Bottas was asked to move aside to allow Lewis Hamilton to pass on two occasions in Bahrain.

Spaniard praised for taking on Indy 500 while F1 rivals criticise the decision.

A genuine Formula One engine and four electric motors will give the £2m car more power than a LaFerrari.

Toto Wolff indicates Silver Arrows may react to Ferrari's success in opening three races.

Mercedes driver insists he does not 'exist' to finish second as Sebastian Vettel claims second race win.

Four-time world champion leads Mercedes rival by seven points following success in Sakhir.

0.023 seconds the difference between Mercedes teammates in top-10 shootout at Sakhir's International Circuit.

Retired Briton is expected to deputise for former teammate, who will race in May's Indy 500.

Shanghai Grand Prix winner says there is "amazing sportsmanship" between championship rivals.

Martin Brundle expects the new season to deliver one of the tightest championship battles for years.

Experienced Finn finished fifth in Shanghai amid frustrations regarding the team's pit strategy.

Mercedes boss claims three-time world champion is "in a different league" after latest Shanghai triumph.

Vettel and Hamilton are tied at the top with 44 points.

Exclusive: Ricciardo told IBTimes UK of Red Bull's chances of closing the gap on Mercedes and Ferrari.

Ferrari protege steps into the breach for the second consecutive race after impressive debut in Melbourne.

Ferrari chairman Sergio Marchionne says company 'needs' to be involved with Formula E.

Sebastian Vettel's victory in Melbourne blamed on pit-stop error by Silver Arrows' chief strategist.