The 1991 Spanish Grand Prix (formally the XXXIII Gran Premio Tío Pepe de España) was a Formula One motor race held on 29 September 1991 at the Circuit de Catalunya. It was the fourteenth race of the 1991 Formula One World Championship, and the first Spanish Grand Prix to be held at Catalunya. The 65-lap race was won by British driver Nigel Mansell, driving a Williams-Renault, after he started from second position. Frenchman Alain Prost finished second in a Ferrari, with Mansell's Italian teammate Riccardo Patrese third. Mansell's Drivers' Championship rival, Brazilian Ayrton Senna, finished fifth in his McLaren-Honda, meaning that he led Mansell by 16 points with two races remaining. Pre-race There was a lot of action in the backrooms in the week separating the Portuguese and Spanish Grands Prix with the big news being that Max Mosley was elected president of the FISA, replacing Jean-Marie Balestre. There were also changes in the driver line-ups as Michael Bartels returned to Lotus replacing Johnny Herbert who had obligations in the Japanese Formula 3000. Jordan had replaced Roberto Moreno with young Italian rookie Alessandro Zanardi, and Fondmetal had sacked Olivier Grouillard and replaced him with Gabriele Tarquini of AGS, Grouillard promptly taking Tarquini's old seat. Championship challenger Nigel Mansell was limping all weekend, the Williams driver having injured his ankle in a football match. Qualifying Pre-qualifying report The pre-qualifying pool in Spain was reduced to seven entrants when Coloni driver Pedro Chaves refused to drive the car, frustrated at the lack of testing and the non-payment of his retainer. The team were unable to find another driver to attempt to pre-qualify the C4, so it stayed in the garage. Chaves had failed to pre-qualify on all 13 of his attempts this season, and did not drive for the team again. Brabham secured their fifth consecutive 1–2 in the pre-qualifying session, with Martin Brundle a couple of tenths of a second faster than Mark Blundell. The third placed pre-qualifier, Michele Alboreto in the Footwork, was over two seconds behind Blundell. On his first outing for Fondmetal after the sacking of Olivier Grouillard, Gabriele Tarquini took the last pre-qualifying spot in the Fomet-1, 0.25 seconds behind Alboreto. Alex Caffi missed out again in fifth place in the other Footwork, just 0.062 seconds slower than Tarquini. It was his fifth failure to pre-qualify in six attempts. Sixth was Fabrizio Barbazza in the AGS, just