2009 Formula One World Championship joined Brawn as a test driver. Force India joined Brawn GP in using the Mercedes engines by signing a five-year deal until 2013, having ended their previous supply contract from Ferrari. The retirement of Red Bull Racing driver David Coulthard led to the appointment of Sebastian Vettel as his replacement, who left the Scuderia Toro Rosso team after a successful previous season including winning the Italian Grand Prix. Toro Rosso, a team designed to develop new Formula One drivers, saw co-owner Gerhard Berger sell his half-stake back to Red Bull, claiming that the new regulations would "leave no room for
Sebastian Vettel the podium in Malaysia, Canada, Singapore and Japan. On 4 October 2014, Red Bull Racing announced that Vettel would be leaving the team at the end of the 2014 season, one year before his contract was due to expire. After the , he had been outqualified by a teammate over a season for the first time in his Formula One career. In addition to suffering reliability problems, throughout 2014 Vettel struggled to get to grips with the Red Bull RB10, and Pirelli's 2014 tyres. Vettel signed off the 2014 season, by becoming the first defending champion to fail to win