The 2004 Superstars Series was the first season of the Campionato Italiano Superstars (Italian Superstars Championship). The championship was won by Francesco Ascani driving for BMW.
| Team | Car | No. | Drivers | Rounds |
|---|---|---|---|---|
| | BMW M5 E39 | 1 | | 2, 5-6 |
| 6 | | 6 | ||
| | BMW M5 E39 | 2 | | 1, 5 |
| | 2 | |||
| | 4 | |||
| 3 | 1-2 | |||
| | 5 | |||
| | 6 | |||
| | BMW M5 E39 | 5 | | All |
| | Jaguar S-Type R | 7 | | 1, 3-5 |
| | 6 | |||
| 8 | | 1, 3, 5-6 | ||
| | BMW M5 E39 | 11 | | All |