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 | |
|---|---|---|---|---|---|
 Max Team | BMW M5 E39 | 1 | Simone Galluzzo | 2, 5-6 | |
| 6 | Massimo di Risio | 6 | |||
| Vaccari Motori | BMW M5 E39 | 2 | Gianluigi Picchi | 1, 5 | |
| Nicola Tesini | 2 | ||||
| Riccardo Cinti | 4 | ||||
| 3 | 1-2 | ||||
| Maurizio Flammini | 5 | ||||
| Leonardo Baccarelli | 6 | ||||
| Lanza Motorsport | BMW M5 E39 | 5 | Mauro Simoncini | All | |
| RF Racing | Jaguar S-Type R | 7 | Alexandra Gallo | 1, 3-5 | |
| Elisa Giordan | 6 | ||||
| 8 | Fulvio Cavicchi | 1, 3, 5-6 | |||
| CAAL Racing | BMW M5 E39 | 11 | Francesco Ascani | All |