 However, both the team not being able to work out why the car could not heat its tyres properly in the early stages of the season and the overall unreliability of the MP4-20 cost a number of race victories when Räikkönen had been leading or in contention to win and also costing him grid positions in some qualifying sessions, which allowed Renault and their driver Fernando Alonso to capitalise and win both titles.In , the team failed to build on the previous year's good form as the superior reliability and speed of the Ferraris and Renaults prevented the team from gaining any victories for the first time in a decade.Montoya parted company acrimoniously with the team to race in NASCAR after the United States Grand Prix, where he crashed into Räikkönen at the start; test driver Pedro de la Rosa deputised for the remainder of the season.