The JGTC had planned to hold a race during the 2005 season at the Shanghai International Circuit in China, in addition to the existing overseas round at Sepang in Malaysia.

In 2022, the series introduced a new longer-distance format for select races, held over 450 kilometres with two compulsory pit stops.

The Golden Week race at Fuji Speedway, held annually on May 4, is also considered to be the series' most prestigious event.

Held during a major public holiday season, it regularly draws the largest crowds of any Super GT race, with a two-day attendance of 91,000 spectators in 2019.

[12] It was the first event of the first official JGTC season in 1994, and has been a permanent fixture of the series' calendar with the exception of 2004, when the circuit was closed for renovations, and 2020, due to the impact of the COVID-19 pandemic.

The top class in Super GT, GT500, is composed entirely of manufacturer-supported teams, representing the three biggest Japanese automobile manufacturers: Toyota, Honda, and Nissan.

The advancements in aerodynamics and horsepower, combined with an ongoing tyre war driving even higher speeds, have made the GT500 class the fastest form of production-based sports car racing today.

[13] For many years, the Nissan Skyline GT-R, the Toyota Supra, and the Honda NSX (NA1) represented their respective brands in GT500.

Today, the three cars competing in GT500 are the Nissan Z (RZ34), the revived Toyota GR Supra, and the Honda Civic Type R (FL5).

In the earlier years of the GT500 category, a number of foreign manufacturers entered cars in the series, with varying success.

[14][15] In 2012, the GT500 regulations was changed in order to provide provisions for four-door vehicles, although none was run until Honda announced that the Civic Type R will replace the outgoing NSX in 2024.

In 2014, Honda was granted a waiver to allow the NSX-Concept GT and NSX-GT (both second-generation based models) to run with a midship engine to match the road car's engine position; the waiver expired at the end of 2019 season with the implementation of Class 1 technical regulations, after which Honda was required to redesign the NSX-GT to accommodate a front-engine layout.

Unlike GT500, both works-backed and independent teams compete in GT300, so the field tends to be much more varied in terms of types of cars entered.

As in GT500, the major Japanese automakers participate in this class, entering cars such as the Toyota Prius and Subaru BRZ, which comply with JAF-GT regulations.

This reflects a growing interest in the series from European manufacturers, with Audi and BMW fielding works-supported entries.

In response to the decline of locally produced entries from specialist manufacturers, the GTA worked with Dome to create the "Mother Chassis" (ja: マザーシャシー), a low-cost GT300 platform,[26] with the first MC car entering the series in 2014.

After the 2011 season, GTA announced GT1 and GTE cars are not eligible anymore with the intention of reducing costs, and adopted full GT3 rule.

Front-wheel drive cars such as the Mitsubishi FTO, Toyota Celica and Cavalier, a rarity in top-level circuit racing, are further examples of unique GT300 machines.

An open top car, Renault Sport Spider, made a one-off participation in 1997, also with lack of success.

Super GT is unique in its open and blunt statement that it is committed to providing exciting racing first, at the expense of runaway investment by works teams.

In the GT300 class, air restrictor sizes, minimum weights, ride heights, and maximum turbo boost pressures are modified on a race-to-race basis to balance performance across all cars.

Following repeated cases of teams and drivers not winning a single race but still winning the championship (in 2003, neither the GT500 nor GT300 champions won a single race in particular), the handicap system was changed in 2009 to combat sandbagging, discouraging a team from intentionally performing poorly in order to secure a more favorable weight handicap.

One driver who gained international appeal is Keiichi Tsuchiya, who raced for the Taisan and ARTA teams before moving to a managerial role upon his retirement in 2004.

After a one-off appearance in 2017, 2009 F1 world champion Jenson Button drove for Team Kunimitsu in 2018 and 2019, winning the 2018 title.

Other well-known drivers in the category were the TV presenter and singer Hiromi Kozono and Masahiko Kondo, who was also a pop star, actor, and racer-turned-GT500 team owner.

Another popular GT300 driver was Tetsuya Yamano, who runs his own driving school and took the GT300 class victory at Sepang for three consecutive years.

Yamano was also the first driver to win multiple championship as well as the sport's first two-time champion, all of them won consecutively, notably with different teams in all occasions.

Three drivers, Toranosuke Takagi in 2005, Jenson Button in 2018, and Nirei Fukuzumi in 2019 have managed to win the championship in their first full-season attempt.