The 1986 Hungarian Grand Prix was a Formula One motor race held at the newly constructed Hungaroring on 10 August 1986.

[4] The race was notable for the battle between fierce Brazilian rivals Nelson Piquet in his Williams-Honda and Ayrton Senna in his Lotus-Renault.

Piquet, after an unsuccessful attempt on the previous lap, managed to pass the Lotus driver around the outside as they went into the first corner, on opposite lock.

He also came in for some criticism following the race, especially in the British press, as he had allegedly neglected to tell his team-mate Nigel Mansell about the benefits of a new differential which provided better grip on the slippery, dusty surface (however, it later came to light that Mansell had in fact tried the new diff in practice but had preferred the older one).

Defending World Champion Alain Prost qualified 3rd in his McLaren-TAG, an accident on lap 23 saw him as a non-finisher in what was his 100th Grand Prix start.