Lewis Hamilton and Nico Rosberg to renew their title battle in 2015 . Reigning champ Hamilton starts as championship favourite with McLaren expected to boast clear advantage for second successive campaign . Mercedes 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 .
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 .