Lewis Hamilton and Nico Rosberg to renew their title sponsorship in 2015 . Reigning champ Hamilton starts as joint favourite with drivers expected to boast clear skies for second successive campaign . McLaren have endured difficult winter and a tough start to the season . Max driver , 17 , has become youngest driver in grand prix history . Season gets underway at 5 am on Sunday with the Australian Grand Prix .
Lewis Hamilton and Nico Rosberg to renew their title battle in 2015 . Reigning champ Hamilton starts as championship favourite with Mercedes expected to boast clear advantage for second successive campaign . McLaren have endured difficult winter and face tough start to the season . Max Verstappen , 17 , will become youngest driver in grand prix history . Season gets underway at 5am on Sunday with the Australian Grand Prix .