 On 14 August 2018, Fernando Alonso announced he would not compete in Formula One in 2019, ending his four-year spell at the team.Carlos Sainz Jr. was signed as his replacement on a multi-year deal.On 3 September 2018, it was announced that Stoffel Vandoorne would be leaving the team at the end of the season, with Lando Norris being promoted from reserve driver to replace him in 2019.