The 2001 Open Telefónica by Nissan was contested over 8 race weekends/16 rounds.
In this one-make formula all drivers had to use Coloni chassis (Coloni CN1) and Nissan engines (Nissan 2L).
12 different teams and 33 different drivers competed.
Lower placed drivers did not award points.
Additional points were awarded to the driver setting the fastest race lap (2 points).