The first Formula 1 race was in 1947, but the first World Championship season was in 1950.
Mike Hawthorn is the first British formula 1 world champion.
Kimi Raikkonen was the 2007 Formula One world champion.
The current F1 world champion is Sebastian Vettel from Germany. He is the youngest ever world champion.
Sebastian Vettel (GER) - champion in 2010 and 2011.
Sebastian Vettel of Germany
The current youngest formula 1 champion is Sebastian Vettel
Probably Sebastian Vettel
Sebastian Vettel is the youngest driver to win the formula 1 drivers champion. He was 23 years and 134 days old.
Kimi Räikkönen
Jochen Rindt
James Hunt. He was world champion in 1976 whilst Nigel Mansell was world champion in 1992. They raced in different eras.
By definition, Kimi Raikkonnen at the moment as reigning World Champion. But it's not that simple!!!