The 1990 Mexican Grand Prix was a Formula One motor race held at Autodromo Hermanos Rodriguez on 24 June 1990. It was sixth race of the 1990 Formula One World Championship, the 14th Mexican Grand Prix and the fifth since the Mexico City circuit returned to the Formula One calendar in 1986. It was held over 69 laps of the 4.4 kilometre circuit for a race distance of 305 kilometres. The race was won by reigning world champion, French driver Alain Prost driving a Ferrari 641. Prost, the 1988 race winner, became the second multiple-winner in Mexican Grand Prix history, joining British driver Jim Clark who won the race in 1962 (non-championship), 1963 and 1967. It was Prost's second win of the year after the Brazilian Grand Prix. Prost won the race by 26 seconds over his British teammate Nigel Mansell. Third was Austrian driver Gerhard Berger driving a McLaren MP4/5B. Ayrton Senna stopped with a puncture late in the race, allowing both Prost and Berger to close to eight points behind him in the Driver's Championship. Qualifying Pre-qualifying report During the Friday morning pre-qualifying session, Olivier Grouillard was fastest for the first time this season, in the Osella. The Larrousse-Lolas of Éric Bernard and Aguri Suzuki were second and fourth, with the EuroBrun of Roberto Moreno between them in third place. For the third Grand Prix in succession, the AGS cars missed out in fifth and sixth positions, with Yannick Dalmas faster than Gabriele Tarquini this time. AGS technical director Hugues de Chaunac left the team prior to this event, frustrated at the team's lack of progress. Seventh again was Bertrand Gachot in the Coloni, although he was much closer to the pace on this occasion, just three tenths of a second behind Tarquini. Claudio Langes was a distant eighth again after only completing the minimum three laps required by the regulations, as the team concentrated on Moreno. Bottom of the time sheets as usual was Bruno Giacomelli in the Life, only managing an out-lap before his engine failed. Team manager Sergio Barbasio confirmed that his engineers were working on converting the L190 chassis to run with the Judd CV engines he now claimed to have bought from Lotus. Pre-qualifying classification Qualifying report There were no driver changes as the F1 show moved to Mexico City. The weather was changeable during the weekend, catching some drivers out, with both