Takuto Iguchi began his motorsports career in 2000 with kart racing in his hometown of Fukuoka. Iguchi raced karts in various Japanese series, winning the FA class of the All Japan Kart Championship in 2005.[1]
Iguchi moved to All Japan Formula Three in 2008, racing for TOM'S. He finished sixth place in the 2009 Macau Grand Prix, The highest place finish of any Japanese driver that year. Iguchi raced one season of Formula Nippon in 2010 for Deliziefollie/Cerumo-Inging finishing thirteenth in the drivers' championship.