It was his stints with the Tricolor during the 1982 and 1986 World Cups in which he stood out. In the 1982 semi-final against West Germany, he hit the crossbar in the 89th minute, and in the penalty shoot-out he converted his kick before France were eventually eliminated.
In the 1984 European Championships held in France, Amoros showed an egregious side of him when, during the opening game against Denmark, he was sent off for head-butting the Danish midfielder Jesper Olsen. He was banned for three games. However, in the final against Spain, national coach Michel Hidalgo used him as a substitute in a game that Les Bleus won by 2–0 at the Parc des Princes.
At the 1986 World Cup, the 24-year-old Amoros was voted best right-back in the tournament by the international press.
In June 2010, Amoros was appointed national team manager for the Comoros Islands,  which coached to September 2010. In January 2012, he was named new coach of Benin, replacing Edme Codjo, who had been in charge since August 2011.