Fernando Alonso drove for Renault when he won the 2005 Formula One World Championship.
Alonso secured the title driving the Renault R25, ending Ferrari and Michael Schumacher’s run of dominance. He won seven of the season’s 19 Grands Prix and clinched the championship at the Brazilian Grand Prix on 25 September, finishing third with two races still remaining.
Renault’s success was significant for the team as well as the driver: it won the Constructors’ Championship for the first time under the Renault name. Alonso’s title also made him the youngest World Champion at the time, aged 24 years and 59 days; Lewis Hamilton broke that age record in 2008.
The main mix-up is with Alonso’s later career. He subsequently drove for McLaren and Ferrari, but neither team was his championship-winning employer. His second title, in 2006, also came with Renault.