The 2004 World Series by Nissan was contested over 9 race weekends/18 rounds.
In this one-make formula all drivers had to utilize Dallara chassis (Dallara SN01) and Nissan engines (Nissan VQ).
[1] Heikki Kovalainen claimed the title for Pons Racing, finishing tenth in first race at Circuit Ricardo Tormo.
[2] Every second race saw a mandatory pit stop.
Lower placed drivers did not award points.