The car retired only four times in the season - with Prost retiring at Silverstone during a very wet British Grand Prix (handling), and at Monza for the Italian Grand Prix (engine, the only in race engine failure McLaren suffered all season), along with Senna's infamous accidents at Monaco (where he totally dominated qualifying and by lap 66 of the race had built a 50-second lead over Prost who had been stuck for 54 laps behind Berger, only to throw it away by crashing into the barriers at Portier. As he lived in Monaco, Senna went back to his home and did not contact the team until that night when he finally returned to the pits as the team was packing up, such was his disappointment), and Monza. Monaco was another example of McLaren's domination, Senna qualified 1.4 seconds faster than acknowledged Monaco master Prost, who himself was 1.2 seconds faster than third-placed Gerhard Berger in his Ferrari.