The FW14 made its debut at the 1991 United States Grand Prix. The car was the most technically advanced car in competition, but various difficulties during the season stymied the team's early progress. Nigel Mansell and Riccardo Patrese recorded 7 victories between them but the Drivers' Championship was wrapped up by Ayrton Senna in the &lt;a href="McLaren%20MP4/6"&gt;McLaren MP4/6&lt;/a&gt;, which had better reliability.