Prinoth started in Formula One in 1961 with his Lotus 18, racing in various non-Championship events, securing podium finishes in two relatively minor races. He entered the 1962 Italian Grand Prix with backing from Scuderia Jolly Club but failed to qualify, and this was his only attempt at a World Championship Formula One event. He returned in 1963 for two more Formula One races, all his appearances being at the wheel of the same car.