The 2018 FIA Formula One World Championship was the motor racing championship for Formula One cars and the 69th running of the Formula One World Championship. Formula One is recognised by the governing body of international motorsport, the Fédération Internationale de l'Automobile (FIA), as the highest class of competition for open-wheel racing cars. Drivers and teams competed in twenty-one Grands Prix for the World Drivers' and World Constructors' championship titles.
For the second consecutive year, the season featured a title battle between Mercedes and Ferrari. The 2018 season saw two four-time World Champions, Lewis Hamilton and Sebastian Vettel, as the main Championship challengers. It was the first time in Formula One history, two quadruple world champions would be competing for a fifth title, and the season was billed as the "Fight for Five" by journalists and fans.[1][2][3] The championship lead ebbed and flowed between the two title contenders, the points lead swapping hands five times throughout the year. At the halfway point after the British Grand Prix, Vettel led the title battle by eight points. Hamilton clinched his fifth World Drivers' Championship title at the 2018 Mexican Grand Prix, with the team securing its fifth consecutive World Constructors' Championship title at the following race.[4][5][6] Ferrari driver Sebastian Vettel finished runner-up, 88 points behind Hamilton, with his teammate Kimi Räikkönen finishing third. In the Constructors' Championship, Mercedes finished 84 points ahead of Ferrari, with Red Bull Racing-TAG Heuer in third, 152 points behind Ferrari.[7]
In 2018, the championship saw the introduction of a new cockpit protection device, known as the "halo". The introduction of the halo was the first stage of a planned rollout that would see the device adopted in all FIA-sanctioned open wheel series by 2020.