Lewis Hamilton appreciates he may have difficulty this year emulating his outstanding achievements of last season.
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Manor will be on the grid for the season-opening Formula One grand prix in Australia.
Lotus technical director Nick Chester is anticipating a far stronger start to the season than they managed last year.
Fernando Alonso is to sit out the season-opening Formula 1 Grand Prix in Australia on advice from doctors.
Susie Wolff will drive for Williams during practice at the British and Spanish Grands Prix in 2015, the team have confirmed.
The son of Michael Schumacher has taken the next step in his own motor-racing career by signing for a Formula 4 team.
Max Chilton is switching to sportscar racing after signing for Nissan in the World Endurance Championship.
Williams set the fastest time as pre-season testing drew to a close in Barcelona on Sunday.
Lewis Hamilton topped the timesheets on his final day of testing ahead of the Formula One season on Saturday.
Nico Rosberg sent out an ominous warning to the rest of Formula One by setting the fastest time in Barcelona.