Mark Winterbottom2021 Repco Supercars Championship ResultsClick on the Race Number to see the complete results for that race. Click on the Site to see Mark Winterbottom's career results at that track. |
| Race | Site | Cars | St | Fin | # | Team | Car | Laps | Money | Status | Led |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Bathurst | 24 | 9 | 4 | 18 | Irwin Tools / Fuchs / Bunnings (Team 18) | Holden | 40/40 | 0 | running | 0 |
| 2 | Bathurst | 24 | 6 | 5 | 18 | Irwin Tools / Fuchs / Bunnings (Team 18) | Holden | 40/40 | 0 | running | 1 |
| 3 | Melbourne | 24 | 4 | 4 | 18 | Irwin (Team 18) | Holden | 36/36 | 0 | running | 0 |
| 4 | Melbourne | 24 | 11 | 11 | 18 | Irwin (Team 18) | Holden | 36/36 | 0 | running | 0 |
| 5 | Melbourne | 24 | 6 | 10 | 18 | Irwin (Team 18) | Holden | 36/36 | 0 | running | 0 |
| 6 | Launceston | 24 | 8 | 7 | 18 | Irwin (Team 18) | Holden | 44/44 | 0 | running | 0 |
| 7 | Launceston | 24 | 7 | 7 | 18 | Irwin (Team 18) | Holden | 44/44 | 0 | running | 0 |
| 8 | Launceston | 24 | 9 | 11 | 18 | Irwin (Team 18) | Holden | 44/44 | 0 | running | 0 |
| 9 | Tailem Bend | 26 | 20 | 25 | 18 | Irwin (Team 18) | Holden | 22/24 | 0 | running | 0 |
| 10 | Tailem Bend | 26 | 10 | 9 | 18 | Irwin (Team 18) | Holden | 24/24 | 0 | running | 0 |
| 11 | Tailem Bend | 26 | 12 | 18 | 18 | Irwin (Team 18) | Holden | 24/24 | 0 | running | 0 |
| 12 | Darwin | 26 | 2 | 22 | 18 | Irwin (Team 18) | Holden | 29/38 | 0 | running | 0 |
| 13 | Darwin | 26 | 4 | 5 | 18 | Irwin (Team 18) | Holden | 38/38 | 0 | running | 0 |
| 14 | Darwin | 26 | 8 | 7 | 18 | Irwin (Team 18) | Holden | 38/38 | 0 | running | 0 |
| 15 | Townsville | 24 | 21 | 10 | 18 | Irwin (Team 18) | Holden | 86/87 | 0 | running | 0 |
| 16 | Townsville | 24 | 21 | 16 | 18 | Irwin (Team 18) | Holden | 87/88 | 0 | running | 0 |
| 17 | Townsville | 24 | 14 | 20 | 18 | Irwin (Team 18) | Holden | 38/39 | 0 | running | 0 |
| 18 | Townsville | 24 | 15 | 10 | 18 | Irwin (Team 18) | Holden | 39/39 | 0 | running | 0 |
| 19 | Townsville | 24 | 13 | 8 | 18 | Irwin (Team 18) | Holden | 39/39 | 0 | running | 0 |
| 20 | Sydney | 24 | 16 | 12 | 18 | Irwin (Team 18) | Holden | 32/32 | 0 | running | 0 |
| 21 | Sydney | 24 | 16 | 17 | 18 | Irwin (Team 18) | Holden | 32/32 | 0 | running | 0 |
| 22 | Sydney | 24 | 7 | 10 | 18 | Irwin (Team 18) | Holden | 32/32 | 0 | running | 0 |
| 23 | Sydney | 26 | 23 | 18 | 18 | Irwin (Team 18) | Holden | 32/32 | 0 | running | 0 |
| 24 | Sydney | 26 | 13 | 10 | 18 | Irwin (Team 18) | Holden | 32/32 | 0 | running | 0 |
| 25 | Sydney | 26 | 20 | 15 | 18 | Irwin (Team 18) | Holden | 23/23 | 0 | running | 0 |
| 26 | Sydney | 24 | 17 | 13 | 18 | Irwin (Team 18) | Holden | 32/32 | 0 | running | 0 |
| 27 | Sydney | 24 | 6 | 6 | 18 | Irwin (Team 18) | Holden | 32/32 | 0 | running | 0 |
| 28 | Sydney | 24 | 13 | 19 | 18 | Irwin (Team 18) | Holden | 32/32 | 0 | running | 0 |
| 29 | Sydney | 24 | 13 | 12 | 18 | Irwin (Team 18) | Holden | 64/64 | 0 | running | 0 |
| 30 | Bathurst | 25 | 14 | 16 | 18 | Irwin (Team 18) | Holden | 161/161 | 0 | running | 1 |
30 starts, 1288 of 1302 laps completed (98.9%), 2 laps led Win: 0 ( 0.0%)Average start:11.9Total Winnings:$0 Podium: 0 ( 0.0%)Average finish:11.9(excluding bonuses) DNF:0 |
