Kimi Antonelli Wins Title Nine Years After Joining Mercedes

Kimi Antonelli joined the Mercedes junior programme at 11 years old.

On November 1, 2026, at 20 years and 68 days, he finished third at the Mexico City Grand Prix and became the youngest world champion in Formula 1 history. He needed to finish ninth or higher to clinch the title outright.

He'd entered the race on 365 points with nine wins in the 2026 season, and he did it while he was battling illness and exhaustion.

The record he broke had stood for 16 years. Sebastian Vettel won his first title in 2010 at 23 years old. Antonelli is also the first Italian champion since Alberto Ascari won in 1953, a gap of 73 years that Formula 1's own reporting recorded on November 2, 2026. He's the fourth driver to win the title in his second season, after Juan Manuel Fangio, Jacques Villeneuve and Lewis Hamilton. None of that was available to buy in one winter. It was built across nine years in one system.

Mercedes describes the same point in plainer terms. Antonelli progressed through karting and the junior categories, he stepped up to Formula 1 with the team in 2025, and he's the first driver developed through its junior programme to win the world championship with the works team. Toto Wolff said the team has known him since he was a child and supported him through the programme, into Formula 1 and now to a championship. Antonelli said he's still trying to understand standing there as champion, and that he joined Mercedes when he was very young.

The road inside those nine years wasn't clean. A long profile published on November 2, 2026, reports that Ferrari's academy considered him and told his camp he was too small to be assessed, and that Mercedes took him at 11 or 12. The same profile reports a violent karting crash at Portimão in 2020 that led to surgery and a long layoff, and a return to fitness by January 2021. In the summer of 2025, at Spa, he was in tears after a qualifying session during a run of nine races without a point. A year later at the same circuit, he dominated the race.

The cost is part of the record, and it's been put in figures. The November 2, 2026, profile reports Wolff putting the investment at more than ten million euros over nine years, covering development, engineering work and the commitment of Antonelli's parents. Mercedes didn't loan him to a smaller team for an apprenticeship. In 2024, the team promoted him straight from Formula 2 to replace Hamilton, and he made his debut in 2025 at 18 years old. That's the bet, and Mexico City is where it paid out.

The team side closed a week later. Antonelli finished fifth at the São Paulo Grand Prix on November 8, 2026, and George Russell finished fourth, and those results sealed the constructors' title for Mercedes. On November 11, 2026, the team celebrated its ninth constructors' championship and Antonelli's first drivers' championship at Brackley and Brixworth. The academy didn't produce a fast teenager for one season. It produced a champion at 20, in his second season, with his name already in the programme's own history.