1986 Formula One World Championship

Alain Prost (pictured in 1985) won his second consecutive Drivers' Championship, driving for McLaren.
Nigel Mansell, driving for Williams, finished runner-up to Prost by two points after dramatically retiring from the final race.
Mansell's Williams teammate Nelson Piquet (pictured in 1990) finished third, three points behind Prost.
McLaren-TAG finished runner-up in the Constructors' Championship with the McLaren MP4/2.
Lotus-Renault finished third in the Constructors' Championship with the Lotus 98T.

The 1986 FIA Formula One World Championship was the 40th season of FIA Formula One motor racing. It featured the 1986 Formula One World Championship for Drivers and the 1986 Formula One World Championship for Manufacturers, both of which commenced on 23 March and ended on 26 October after sixteen races. The Drivers' Championship was won by Alain Prost, Prost was the first driver to win back-to-back Drivers' Championships since Jack Brabham in 1959 and 1960. Together with Prost, Nigel Mansell, Nelson Piquet and Ayrton Senna dominated throughout the season and formed what was dubbed as the "Gang of Four". The 1986 season also marked the final Formula One season of 1982 Drivers' Champion Keke Rosberg who retired from the sport at the end of season following a difficult season with McLaren.

After 1986, Renault left the sport as an engine supplier due to company restructuring, only to return in 1989. The Constructors' Championship was won by Williams-Honda. Honda became the first Japanese engine supplier to win a Constructors' Championship.