 In 2004 Martínez migrated to Europe and produced five top-five results in the Formula Renault V6 Eurocup Series.The 25-year-old missed the first race of the year in the 2005 Champ Car Atlantic Championship but still managed to claim fifth in his rookie season.He finished third in his first race in Monterrey, Mexico, captured his first career pole and scored a total of four podiums and seven top-five finishes.