1st Hungarian Grand Prix
The World Championship headed behind the Iron Curtain for the first time to the new Hungaroring, outside Budapest, and there was an enthusiastic welcome for the Formula 1 circus. The track was rather twisty and overtaking would be difficult. Traffic was a problem in qualifying but as usual Ayrton Senna was on pole in his Lotus-Renault with Nelson Piquet second in the Williams-Honda ahead of Alain Prost (McLaren-TAG), World Championship leader Nigel Mansell (Williams-Honda) and Keke Rosberg in the second McLaren. The top 10 was completed by Patrick Tambay in the Lola-Ford, Stefan Johansson's Ferrari, Johnny Dumfries in the second Lotus, René Arnoux's Ligier and Alan Jones's Lola.
There was a vast crowd, estimated to be more than 200,000 , on race day and at the start Senna went into the lead while Mansell blasted ahead of Prost and Piquet to grab second place. Piquet soon showed that he was very competitive by passing Mansell for second. Tambay had started well and overtook Prost on the first lap but he was soon repassed by the McLaren and by his team mate Jones.
On lap 11 Prost moved ahead of Mansell and a lap later Piquet took the lead from Senna, who fell back towards Prost's McLaren. Alain soon pitted with an electrical problem and this upset Rosberg's race as he pitted for tyres at the same time and had to be waved through. McLaren ceased to be a force. This meant that Mansell was third with Dumfries fourth and Berger fifth.
In the middle of the race Piquet pitted for tyres while Senna stayed out and charged hard and so that when he pitted he was able to rejoin in the lead. The gap came quickly down and Piquet went ahead again and the two cars then ran close together all the way to the finish but Piquet stayed ahead with Senna settling for second and Mansell third. Johansson claimed fourth with Dumfries fifth and Martin Brundle sixth in his Tyrrell. The result meant that there were four men covered by 11 points in the World Championship race: Mansell, Senna, Piquet and Prost.