At the 1963 Belgian Grand Prix, Amon was partnered by Lucien Bianchi and started ahead of him from 15th position. After nine laps, however, an oil fire ended his race. He continued to experience mechanical problems at the Dutch, Mexican and German Grands Prix; and after an accident in practice for the Italian Grand Prix left him hanging out of his car's cockpit with three broken ribs, he missed both the Italian and United States rounds.