12:15 PM Will Power's IndyCar title defence starts at this weekend's St Petersburg Grand Prix with the Australian admitting his breakthrough after years of near misses has made him hungry for more success.
Daniel Johnson 10:42 AM Fernando Alonso had barely passed the medical exams which allow his return to Formula One before he was hurling grenades towards his McLaren team with an explosive testimony of the accident which threatened his career.
10:07 PM Williams Formula One driver Valtteri Bottas has been passed fit to drive in this weekend's Malaysian Grand Prix after undergoing medical checks by the world governing body FIA.
9:21 PM Every year Will Power spends in the United States racing the IndyCar series the American twang in his Australian accent strengthens.
Relations between Formula One team Red Bull and engine supplier Renault have taken a turn for the worse ahead of the Malaysian Grand Prix.
Renault's Formula One boss says Daniel Ricciardo isn't likely to get a race-winning engine this season.
Two-time Formula One world champion Fernando Alonso is set to return to the track for the second Grand Prix of the season in Malaysia, his McLaren-Honda team has confirmed.
Mark Fogarty Frustrated former V8 Supercars champion Marcos Ambrose has fled to the outback to consider his future after aborting his comeback.
Alan Baldwin Germany will have no Formula One grand prix this year for the first time since 1960 after the sport's governing body issued a revised calendar on Friday without the July 19 round.
Germany appears to be without a Formula One race for the first time in 55 years as neither of the country's two circuits has been able to get series promoter Bernie Ecclestone to reduce his fee.
Oliver Brown It is one of the mysteries of our time that a sickly-sweet energy drink, with enough caffeine to keep the average mammal awake for a week, should morph into a cultural phenomenon worth more than $5 billion. But in the sporting sphere at least, Red Bull have reached a moment of reckoning.
A 2015 German Formula One grand prix has become even more unlikely after Hockenheimring boss Georg Sailer was quoted as saying he has given up all hope.
Will Power's IndyCar title defence has started in the best possible fashion, the Australian fastest overall at a two-day pre-season test.
McLaren driver Fernando Alonso will drive a simulator this week in his bid to return to racing.
Daniel Johnson Lewis Hamilton has poured scorn on suggestions by Bernie Ecclestone, the chief executive of Formula One, and others that an urgent rewrite of the rules is needed to stop him and -Mercedes dominating the sport, claiming that he would beat any driver in the same car.
Two-time V8 Supercars champion Marcos Ambrose has surprisingly asked for a break from driving as he reassesses his much hyped comeback.
Torrential rain has denied young Australian Jack Miller a final day of testing on his new bike, less than a fortnight out from his MotoGP debut.
Daniel Johnson The chequered flag had barely fallen in yesterday's (Sunday's) Australian Grand Prix before Mercedes were involved in a bitter row with their rivals who were demanding an urgent shake-up of the rules to prevent a two-horse race this Formula One season.