The 2015 Formula 1 World Championship was the 69th season of FIA Formula One motor racing. It featured the return of the Mexican Grand Prix, and was dominated by Mercedes, with Lewis Hamilton winning his third World Drivers' Championship and Mercedes securing the Constructors' Championship.
Lewis Hamilton started the season by taking pole position and winning the Australian Grand Prix, with his teammate Nico Rosberg finishing second to secure a Mercedes 1-2.
Sebastian Vettel claimed his first victory for Scuderia Ferrari at the Malaysian Grand Prix, interrupting the early dominance of Mercedes and marking Ferrari's first win since 2013.
Lewis Hamilton lost the lead of the Monaco Grand Prix after a late safety car period prompted a disastrous pit stop strategy by Mercedes, dropping him from first to third place behind Daniel Ricciardo and Sebastian Vettel.
Mercedes secured the Constructors' Championship at the Russian Grand Prix with a 1-2 finish by Lewis Hamilton and Nico Rosberg, marking their second consecutive constructors' title.
Lewis Hamilton won the United States Grand Prix to clinch his third World Drivers' Championship, successfully defending his 2014 title and becoming the first British driver to win back-to-back titles.
Nico Rosberg won the Abu Dhabi Grand Prix, capping off a season where he won the final three races, though Lewis Hamilton had already secured the championship.
