Roberto Mieres race record
| Grand Prix | Date | Team | Grid | Finish | Pts |
|---|---|---|---|---|---|
| Italian Grand Prix 1955 | 11 Sept 1955 | Maserati | 7 | 7 | |
| British Grand Prix 1955 | 16 Jul 1955 | Maserati | 6 | Engine | |
| Dutch Grand Prix 1955 | 19 Jun 1955 | Maserati | 7 | 4 | 4 |
| Belgian Grand Prix 1955 | 5 Jun 1955 | Maserati | 13 | 5 | 1 |
| Monaco Grand Prix 1955 | 22 May 1955 | Maserati | 6 | Transmission | |
| Argentine Grand Prix 1955 | 16 Jan 1955 | Maserati | 16 | 5 | 2 |