Williams
Nick Heidfeld a terminé P11 du Championnat du Monde 2005 avec 28 points. En 14 courses : 0 victoires, 3 podiums et 1 pole position — meilleur résultat P2.
| Round | Race | Team | Grid | Finish | Points | Status |
|---|---|---|---|---|---|---|
| 1 | Australian Grand Prix | Williams | 7 | P19 | Accident | |
| 2 | Malaysian Grand Prix | Williams | 10 | P3 | 6 | Finished |
| 3 | Bahrain Grand Prix | Williams | 4 | P16 | Engine | |
| 4 | San Marino Grand Prix | Williams | 8 | P6 | 3 | Finished |
| 5 | Spanish Grand Prix | Williams | 17 |
| P10 |
| +1 Lap |
| 6 | Monaco Grand Prix | Williams | 6 | P2 | 8 | Finished |
| 7 | European Grand Prix | Williams | 1 | P2 | 8 | Finished |
| 8 | Canadian Grand Prix | Williams | 13 | P14 | Engine |
| 9 | United States Grand Prix | Williams | 15 | P19 | Withdrew |
| 10 | French Grand Prix | Williams | 14 | P14 | +4 Laps |
| 11 | British Grand Prix | Williams | 14 | P12 | +1 Lap |
| 12 | German Grand Prix | Williams | 7 | P11 | +1 Lap |
| 13 | Hungarian Grand Prix | Williams | 12 | P6 | 3 | Finished |
| 14 | Turkish Grand Prix | Williams | 6 | P18 | Tyre |