Kammala wannan jumla: An sake sabunta RE30 zuwa "C" bayani dalla-dalla don farkon kakar 1983, kafin sabon RE40 ya kasance. Prost da sabon abokin aikinsa Eddie Cheever duka sun tuka RE30C a farkon kakar wasa a Brazil, tare da Cheever sannan ya sake tuka motar a
A cikin Long Beach. RE30C ya bi ka'idodin "ƙasa" da aka kafa a wannan shekara, tare da babban fuka-fuki da fuka-fuki na gaba.