| Date | Grandprix | Team | Winning Time | Leader Offset | Pos | Pts | Total |
| 07/03/1999 | Australia | Stewart | Disqualified - DNS:Engine fire | 0 | 0 | ||
| 11/04/1999 | Brazil | Stewart | Retirement - Hydraulics | 0 | 0 | ||
| 02/05/1999 | San Marino | Stewart | 93:44.792 | +4 laps | 10 | 0 | 0 |
| 16/05/1999 | Monaco | Stewart | Retirement - Rear suspension | 0 | 0 | ||
| 30/05/1999 | Spain | Stewart | Retirement - Transmission | 0 | 0 | ||
| 13/06/1999 | Canada | Stewart | 101:35.727 | +0.02.804 | 5 | 2 | 2 |
| 27/06/1999 | France | Stewart | Retirement - Gearbox | 0 | 2 | ||
| 11/07/1999 | Britain | Stewart | 92:30.144 | +1.17.709 | 12 | 0 | 2 |
| 25/07/1999 | Austrian | Stewart | 88:12.438 | +4 laps | 14 | 0 | 2 |
| 01/08/1999 | Germany | Stewart | 81:58.594 | +5 laps | 11 | 0 | 2 |
| 15/08/1999 | Hungary | Stewart | 106:23.536 | +1 lap | 11 | 0 | 2 |
| 29/08/1999 | Belgium | Stewart | Retirement - Brakes/Spun off | 0 | 2 | ||
| 12/09/1999 | Italy | Stewart | Retirement - Clutch | 0 | 2 | ||
| 26/09/1999 | Europe | Stewart | 101:54.314 | 1 | 10 | 12 | |
| 17/10/1999 | Malaysia | Stewart | 96:38.494 | +0.17.538 | 4 | 3 | 15 |
| 31/10/1999 | Japan | Stewart | 91:18.785 | +1 lap | 7 | 0 | 15 |