Yoong became the first Malaysian to race in Formula One with Minardi at the 2001 Italian Grand Prix and left the sport in 2002. Yoong had a less successful career in CART World Series but had improved in the Porsche Carrera Cup with a less successful foray into V8 Supercars. Yoong raced in A1 Grand Prix series between 2005 and 2008 and scored three victories. In between this, Yoong raced in the Le Mans 24 Hours. Yoong worked for Lotus Racing as head of driver development and is also a commentator for Fox Sports Asia.