Bathurst 12 Hour

The event was inspired by the long-running Bathurst 1000, which began at the Phillip Island Grand Prix Circuit in Victoria in 1960 before moving to Bathurst in 1963 as a race for standard production cars with minimal modifications. When the race was lengthened from 500 miles to 1000 kilometres in 1973, regulations changed to allow improved touring cars. The Bathurst 12 Hour was intended to recreate the original feel of the Bathurst 1000 for production cars, while providing a distinct test through its longer race distance.

In 1990, race promoter Vincent Tesoriero — a former Bathurst 1000 competitor — saw an opportunity to run a 12-hour endurance race for Series Production cars at Mount Panorama. Tesoriero secured long-time Bathurst 1000 sponsor James Hardie as a sponsor in late 1990, leaving limited time to organise the event for Easter weekend 1991. Regulations were based on the Group 3E Series Production Car rules used in the Australian Production Car Championship for naturally aspirated four- and six-cylinder passenger sedans, but also admitted turbocharged and V8-engined cars that had been outlawed from that championship in 1990. Exotic mid-engined sports cars and GT cars were not eligible.

The race was originally scheduled to run from 9am to 9pm but Bathurst Regional Council disallowed it; it instead ran from 5:15am to 5:15pm, with the final two hours televised by Network Ten. Twenty-four cars entered across six classes based on engine capacity and sporting specification. Twenty cars finished. The race was won by Allan Grice, Peter Fitzgerald, and Nigel Arkell in Fitzgerald's 1989 Production Car Championship-specification Toyota Supra Turbo.

In 1992, manufacturer-backed teams entered representing Mazda, Holden, Citroën, and Peugeot. Porsche provided factory support from 1993 onwards. Honda, Nissan, Maserati, BMW, and Lotus were also represented without factory support. The Mazda team dominated with the Mazda RX-7, winning three consecutive races. Facing rising costs, the 1995 event was moved to Eastern Creek Raceway in Sydney and rescheduled to August, before the race was discontinued in 1996.

After several years without a major production car race, the concept was briefly revived as the Bathurst 24 Hour in 2002 and 2003, run by Nations Cup organiser PROCAR. The races were dominated by the Holden Monaro 427Cs of Garry Rogers Motorsport. PROCAR owner Ross Palmer was forced to abandon the event after two years due to rising costs.

The Bathurst 12 Hour was successfully revived in 2007 as part of the Bathurst Motorsport Festival. Planned by James O'Brien, the return began with regulations close to the original production car concept. Thirty-two cars entered. The 2007 race was won by Garry Holt, Paul Morris, and Craig Baird in a BMW 335i — ten years after Morris and Baird had won the 1997 AMP Bathurst 1000 in a BMW, only to be disqualified for exceeding driver time regulations.

The 2008 and 2009 races were won by Mitsubishi Lancers, with Rod Salmon and Damien White among both winning line-ups. The 2009 race was particularly dominated by Mitsubishi, which finished in the first four positions. Entries peaked at 48 in 2009. Garry Holt repeated his 2007 victory in 2010, driving alongside Morris and John Bowe; that race was interrupted for approximately an hour after a tree fell across Conrod Straight. The final production-only race in 2010 attracted 42 entries. During this period, the event entrenched itself as one of the biggest race meetings at the start of the Australian racing season, alongside the Adelaide 500 and the Australian Grand Prix.

In 2011, GT3-specification cars were admitted for the first time. Despite this, entries dropped dramatically — many production car teams, disillusioned by the shift toward GT, chose not to race. Of the 26 cars that competed, only eight raced in production car classes. Joest Racing dominated the 2011 event, with the team's two Audi R8 LMS GT3s finishing first and second, a lap ahead of the third-placed Porsche. 2012 saw another small field of 25 cars; Audi won again, with DTM and FIA GT1 team Phoenix Racing this time.

The 2013 event attracted a record field of over 50 cars. An additional innovation saw the opening round of the Australian GT Championship incorporated into the first hour of the race, with teams electing whether to contest GT Championship points at the end of that hour and optionally withdraw or continue for the full 12 hours. Drivers could cross-enter between cars to contest both. Erebus Motorsport took the first victory for an Australian team under GT regulations, with German drivers Bernd Schneider, Thomas Jäger, and Alexander Roloff taking their Mercedes-Benz SLS AMG to the win.

Maranello Motorsport took a poignant victory in 2014 — the team's former driver Allan Simonsen had been killed in a crash at the 2013 24 Hours of Le Mans. V8 Supercars driver Craig Lowndes held off a late charge from Maximilian Buhk to win. That year also saw the introduction of the Allan Simonsen Pole Position Trophy, named in Simonsen's honour and awarded to the fastest qualifier; in 2014, Maranello Motorsport narrowly missed pole to Maro Engel by less than a tenth of a second before going on to win the race.

The 2015 race featured a record twenty safety car periods. Katsumasa Chiyo, driving a Nissan GT-R, took the lead with two laps remaining to give Nissan its first major victory at Mount Panorama since the 1992 Bathurst 1000. In August 2015, V8 Supercars-owned company Supercars Events purchased 50% of the Bathurst 12 Hour, joining Bathurst Regional Council as part-owners; the move followed a date clash with a V8 Supercars pre-season test day that had forced drivers including Lowndes out of the 12 Hour. The former organisers, Yeehah Events, subsequently announced the Bathurst 6 Hour for 2016 to restore a Bathurst endurance race for production cars.

The 2016 race was the inaugural event of the newly formed Intercontinental GT Challenge, managed by the Stéphane Ratel Organisation; the first year also included the Sepang 12 Hours and Spa 24 Hours. Shane van Gisbergen qualified on record pace and led Tekno Autosports' McLaren 650S GT3 to victory alongside McLaren factory driver Álvaro Parente and team owner/driver Jonathon Webb.

The 2017 event received 55 entries — the highest in the event's revival — and introduced an all-pro GT3 class for the first time. Maranello Motorsport repeated their 2014 triumph, with Finnish driver Toni Vilander, Craig Lowndes, and Jamie Whincup receiving the Australian Tourist Trophy, which became the perpetual trophy for the outright winner.

The 2018 race was red-flagged on lap 273 following a major multi-car accident at Sulman Park involving Ash Walsh, Bryce Fullwood, and John Martin, with Walsh and Martin transported to hospital. With debris unable to be cleared before the race deadline of 5:43pm, results were backdated to lap 271. The Audi Sport Team WRT entry of Robin Frijns, Stuart Leonard, and Dries Vanthoor was declared the winner, despite doubts over whether they had the fuel to win without the interruption.

The 2019 race saw unprecedented amounts of green-flag running and set a distance record. Matt Campbell completed three overtakes in the final stages — including one on Chaz Mostert requiring a post-race investigation — to take Porsche's first victory, alongside Dennis Olsen and Dirk Werner. The 2020 race again broke the distance record; Bentley took their first victory in the event in six attempts. Five cars were removed from the field prior to the race after heavy crashes in practice and qualifying.

In October 2020, the 2021 race was cancelled due to international travel restrictions caused by the COVID-19 pandemic. Supercars ran the Mount Panorama 500 in February 2021 as the opening round of the Supercars Championship in its place. The 2022 race was delayed from February to May due to further COVID-19 concerns. The 2022 event removed the all-professional class for the first time since 2016; twenty cars entered, with extended pre-dawn running, cooler temperatures, and rolling fog due to the autumn date plus intermittent rain throughout the day. Kenny Habul, who owns a property on Conrod Straight, led his SunEnergy1 Racing team to victory; the driver line-up included Jules Gounon, who had also won in 2020 with Bentley, making him a consecutive-running winner.

Introduced in 2014 in honour of Allan Simonsen — who held the Bathurst 12 Hour race lap record and had driven the fastest officially timed lap around Mount Panorama in a closed-wheel car at the time of his death — the trophy is awarded to the fastest qualifier. The 2014 introduction coincided with removal of the minimum allowed lap time of 2 minutes and 6 seconds, enabling a major improvement in qualifying times.

In 2015, Laurens Vanthoor set the fastest ever officially recorded time around Mount Panorama in qualifying. That record lasted only twelve months: Shane van Gisbergen beat it by over one second in qualifying for 2016. A top-ten shootout was introduced in 2017, mirroring the Bathurst 1000 format. Chaz Mostert became the first Australian to win the trophy in 2018, also making BMW the fifth manufacturer to win it in five years. In 2019, the Aston Martin V12 Vantage GT3 of Jake Dennis initially took the trophy but was subsequently excluded from the Top 10 Shootout for a technical infringement, granting it instead to the Mercedes-AMG GT3 of Raffaele Marciello. In 2022, the one-lap shootout was replaced by two 15-minute sessions due to concerns over low tyre temperatures; Mostert became the first driver to win the trophy a second time, by the smallest margin in the race's history. The trophy is awarded for the fastest qualifying time, not pole position — meaning a driver with a grid penalty may start the race from a lower grid slot despite holding the trophy.

In the 1990s the race was broadcast on Network Ten. On its revival, coverage appeared as highlights on SBS and online streaming. In 2012 the event received its first live coverage since the 1990s, with Speed airing the final 90 minutes and producing a three-hour highlights package. Since 2013, commentary has been provided by Radio Le Mans, building an international audience. In 2014, SBS broadcast the final three hours live on free-to-air, supported by Radio Le Mans commentary. From 2015 the entire race has been broadcast live on the Seven Network and 7mate. In 2020 and 2022, Fox Sports and its streaming service Kayo Sports also broadcast the event. The estimated viewing audience for the 2014 race was over half a million people from 150 countries.

1991–1994: James Hardie

2007–2009: Wright Patton Shakespeare (WPS)

2010–2012: Armor All

2013–2020, 2022–2023: Liqui Moly

2024: Repco

2025–present: Meguiar's

This article is based solely on the supplied corpus. No external sources were consulted; claims that could not be substantiated against the corpus were omitted under the drop-the-claim rule.