The seven leading title contenders as F1 season gets underway

There are doubts about how competitive McLaren will be this season. Defending champion Norris could be at a disadvantage

HOMEMADE: Red Bull are using their own engines for the first time. Signs are encouraging for Max Verstappen. Pic: Bradley Collyer/PA Wire.

The Formula One season begins in Melbourne on Sunday as Lando Norris bids to defend his world championship crown. These are the leading contenders for this year's drivers' title.

LANDO NORRIS (McLAREN)