Complete results from Practice 5 at the 2023 Repco Bathurst 1000, Event 10 of the Repco Supercars Championship at Mount Panorama Motor Racing Circuit in Bathurst, New South Wales.
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Results: Practice 5 Co-drivers
| Pos | Num | Team/Sponsor | Driver | Car | Fastest lap | Split |
| 1 | 97 | Red Bull Ampol Racing | Richie Stanaway | Chev Camaro ZL1 | 2:06.0486 | |
| 2 | 26 | Penrite Racing | Garth Tander | Ford Mustang GT | 2:06.5108 | 0:00.4622 |
| 3 | 888 | Supercheap Auto Racing | Zane Goddard | Chev Camaro ZL1 | 2:06.5577 | 0:00.5091 |
| 4 | 99 | Coca-Cola Racing by Erebus | David Russell | Chev Camaro ZL1 | 2:06.6596 | 0:00.6110 |
| 5 | 34 | Truck Assist Racing | Jayden Ojeda | Chev Camaro ZL1 | 2:06.7699 | 0:00.7213 |
| 6 | 35 | Truck Assist Racing | Jaylyn Robotham | Chev Camaro ZL1 | 2:06.8864 | 0:00.8378 |
| 7 | 11 | Shell V-Power Racing Team | Tony D’Alberto | Ford Mustang GT | 2:06.9124 | 0:00.8638 |
| 8 | 7 | Petronas Racing | Jake Kostecki | Ford Mustang GT | 2:06.9328 | 0:00.8842 |
| 9 | 88 | Red Bull Ampol Racing | Jamie Whincup | Chev Camaro ZL1 | 2:06.9491 | 0:00.9005 |
| 10 | 20 | Toyota Forklifts | Warren Luff | Chev Camaro ZL1 | 2:07.2092 | 0:01.1606 |
| 11 | 23 | Movember Racing Team | Jonathon Webb | Chev Camaro ZL1 | 2:07.2206 | 0:01.1720 |
| 12 | 96 | Pizza Hut Racing | Jordan Boys | Chev Camaro ZL1 | 2:07.2666 | 0:01.2180 |
| 13 | 6 | Monster Energy Racing | James Moffat | Ford Mustang GT | 2:07.5000 | 0:01.4514 |
| 14 | 25 | Mobil 1 Optus Racing | Lee Holdsworth | Ford Mustang GT | 2:07.5638 | 0:01.5152 |
| 15 | 2 | Mobil 1 NTI Racing | Fabian Coulthard | Ford Mustang GT | 2:07.6138 | 0:01.5652 |
| 16 | 3 | CoolDrive Racing | Tim Blanchard | Ford Mustang GT | 2:07.6160 | 0:01.5674 |
| 17 | 19 | Penrite Racing | Kevin Estre | Ford Mustang GT | 2:07.6211 | 0:01.5725 |
| 18 | 31 | Nulon Racing | Dylan O’Keeffe | Chev Camaro ZL1 | 2:07.6268 | 0:01.5782 |
| 19 | 4 | SCT Motorsport | Jaxon Evans | Chev Camaro ZL1 | 2:07.7254 | 0:01.6768 |
| 20 | 98 | Shell V-Power Racing Team | Kai Allen | Ford Mustang GT | 2:07.8358 | 0:01.7872 |
| 21 | 8 | R&J Batteries Racing | Dale Wood | Chev Camaro ZL1 | 2:07.9063 | 0:01.8577 |
| 22 | 17 | Shell V-Power Racing Team | Alex Davison | Ford Mustang GT | 2:07.9156 | 0:01.8670 |
| 23 | 5 | Snowy River Racing | Zak Best | Ford Mustang GT | 2:08.0232 | 0:01.9746 |
| 24 | 56 | Tradie Beer Racing | Tyler Everingham | Ford Mustang GT | 2:08.0845 | 0:02.0359 |
| 25 | 18 | DEWALT Racing | Michael Caruso | Chev Camaro ZL1 | 2:08.1537 | 0:02.1051 |
| 26 | 9 | Coca-Cola Racing by Erebus | Jack Perkins | Chev Camaro ZL1 | 2:08.4783 | 0:02.4297 |
| 27 | 14 | Middy’s Racing | Dean Fiore | Chev Camaro ZL1 | 2:08.5666 | 0:02.5180 |
| 28 | 55 | Castrol Racing | Garry Jacobson | Ford Mustang GT | 2:08.9490 | 0:02.9004 |
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