Race report At the start there was an overly long delay between the red and green lights, which caused the drivers to be a little more agitated than usual, resulting in an accident between Prost and Berger at the Mirabeau corner. The track was blocked and the race had to be stopped. At the second start everything went to plan and Senna led from Prost, Alesi, Berger, Patrese and Boutsen, with Pirro being the first retirement when his engine blew on the opening lap. Eighth-placed Nigel Mansell was the centre of action in the early stages, quickly passing Martini before setting off after Boutsen, but his overtaking attempt on the Belgian was unsuccessful as he touched the back of the Williams at the seafront chicane and had to limp back to the pits for a new front wing. At the front Senna led comfortably, even more so after Prost retired on lap 30 with battery problems. On lap 35, Piquet spun approaching Loewes Hairpin and stalled his engine; he received a push start from the marshals and was disqualified as a result. While Senna maintained his lead, there was action further back where Mansell was charging through the field. First he disposed of
Derek Warwick and then managed to successfully pass Boutsen for fourth, as Alesi and Berger fought over second place. In the late stages Senna started to slow, which allowed Alesi and Berger to close up on him, but Senna's McLaren survived to the finish for his third career win at Monaco. Alesi was second, followed by Berger, Boutsen,
Alex Caffi and the only other survivor,
Éric Bernard, who had taken sixth place in the late stages after he had forced himself past
Gregor Foitek's
Onyx by pushing him into the wall. In doing so, Bernard earned his first point in Formula One. Despite not finishing the race, Foitek was classified seventh, his best F1 result.
Race classification ==Championship standings after the race==