Monfardini started out in 1994, competing in
karting like many of his
GP2 rivals. He stayed there until 2000, debuting in
Italian Formula Renault in 2001. He would stay there in 2002, also driving in
Formula Renault 2000 Eurocup. He again raced in Italian Formula Renault in 2003, driving two races in both 2000 Eurocup and
Formula 3000, the latter being with the BCN team. In 2004, Monfardini drove the full F3000 season for the AEZ team, and in 2005 was one of a select few GP2 Series drivers with a full season of F3000 experience behind them. He drove for the
Durango team as the number two to
Clivio Piccione, moving to the
Coloni team at the end of the season, essentially switching places with compatriot
Gianmaria Bruni. For 2006 he moved to the
DAMS team, but only scored one more point than in the previous season and was not retained beyond the end of the year. For 2007, Monfardini raced in the GT1 class of the
FIA GT Championship, driving an
Aston Martin DBR9. For 2008, he drove a
Ferrari 430 in the GTA class of the
International GT Open. ==Racing record==