FRIDAY, 7 MARCH
McLaren boss Ron Dennis says Mercedes driver Lewis Hamilton could re-sign for the Woking-based team once they "return to the level of competiveness we have enjoyed in the past".
Red Bull boss Christian Horner is adamant his team can perform in this year's championship, despite posting a series of disappointing results during pre-season testing.
McLaren have confirmed they will start the new Formula 1 season without a title sponsor, but boss Ron Dennis expects to have one confirmed soon.
Long Beach City Council have failed to reach agreement over whether to bring its Californian street race back to Formula 1 when a deal with IndyCar expires in 2015.
Former HRT, Renault and Williams driver Bruno Senna believes Mercedes will triumph in this year's championship, with Ferrari to follow behind in second.
TUESDAY, 4 MARCH
Mercedes' former world champion Lewis Hamilton is favourite for this year's Formula 1 title, according to fellow Briton and retired F1 driver David Coulthard.
NASCAR team owner Gene Haas says he will find out in the next two weeks whether he can enter a team into Formula 1 for 2015.
World champion Sebastian Vettel admits Red Bull are trailing their rivals when it comes to pace but reckons there are "bigger problems" with the car that need sorting out.
Rob White, deputy managing director of Renault, admits the engine supplier faces an "anxious" weekend when the season starts in Australia after problems for its partner teams in testing.
SATURDAY, 1 MARCH
Renault says it needs to focus on the drivability of its power unit before it can say it is truly getting 100% out of its new V6 turbo and energy recovery system.
Jenson Button says McLaren is "further behind than expected" as Formula 1 heads towards the conclusion of pre-season testing in Bahrain.
Sergio Perez says he has "no idea" whether Force India are up there with Mercedes after topping the timesheets on successive days.
TUESDAY, 25 FEBRUARY
Former F1 world champion Jacques Villeneuve is to return to Indy 500 with Schmidt Peterson Motorsports.
Marussia suffered a setback on the first day of the Bahrain test because of a computer virus which meant the team completed the fewest number of laps during the four-day outing at the Sakhir circuit.
Ferrari driver Kimi Raikkonen is still unsure how competitive his team are after eight days of pre-season testing.