After three seasons and a title in the German Mini-bikes Championship, Sascha Hommel started to ride 125cc bikes in the German IDM series in 2003, taking 13th overall on his first attempt. The following year, the youngster from Reichenbarch took third overall and also achieved noticeable results in the 125cc European and Spanish Championship. In 2005, the 15 year-old makes his GP debut with the Malaguti Reparto Corse.