All Japan Grand Touring Car Championship

The JGTC (Japanese Grand Touring Championship)[1] was established in 1993[2][3] by the Japan Automobile Federation (JAF) via its subsidiary company the GTA (GT Association), replacing the defunct All Japan Sports Prototype Championship for Group C cars and the Japanese Touring Car Championship for Group A touring cars, which instead would adopt the supertouring formula. Seeking to prevent the spiraling budgets and one-team/make domination of both series, JGTC imposed strict limits on power, and heavy weight penalties on race winners in an openly stated objective to keep on-track action close with an emphasis on keeping fans happy.

2003 Xanavi nismo GT-R (R34).

In its first season, the JGTC grid mostly consisted of Japan Super Sport Sedan cars, with the only genuine JGTC cars being a Nismo-entered Nissan Skyline GT-R and Nissan Silvia S13, of which the GT-R was a modified AWD Group A car. An exception was the first race of the season, which was also an exhibition race of the IMSA GT Championship, and therefore saw a contingent of GTS and GTU cars from the American series join the field. The 1000 km Suzuka also saw a greater variety of competitors, with Group C prototypes, Group N touring cars, and GT cars from Europe and IMSA all joining the field.

For the following season, the series would undergo a rules overhaul, creating a class for the FIA's GT1 category, and another for the GT2 category. The JSS series would altogether dissolve into the latter category. What made the series more significant was that compared to other racing series, JGTC teams at the time had the freedom to enter whichever cars they preferred, even if it was the JSS cars from the inaugural season or spaceframe racers from the IMSA GTS class. However, the Group C prototypes, whilst easily showing dominant form, were banned from the series from the 1995 season onwards.

By the end of the 1995 season, as the cost of obtaining and running a GT1 car had dramatically increased, the JGTC would go through another rules overhaul in order to lower costs and avoid the fate of the JSPC series it had replaced. The newly formed GT500 and GT300 regulations were adopted, which capped cars with air restrictors depending on their weight and power. While the regulations would continuously evolve, the GT500 and GT300 classes continue to form the top level of Japanese sports car racing today.

The cars are divided into two groups; GT300 and GT500. The names of the categories derive from their traditional maximum horsepower limit - in the early years of the series, GT500 cars would have no more than 500 horsepower while GT300 cars would max out at around 300 hp and have far less downforce than their GT500 counterparts. While the current generation of engines in GT500 and GT300 cars produced a power output in excess of the traditional limit, the limit stayed in place throughout the entirety of the JGTC era.

In both groups, the car number is assigned to the team, in which each team is allowed to choose whichever number they want as long as the number isn't already used by any other team. The number assigned to each team is permanent, and may only change hands when the team exits the series. In addition, only defending team champions in GT500 are allowed to use number 1, although it isn't mandatory for defending champions to use those number.

For easy identification, GT500 cars run white headlight covers, windshield decals, and number panels, while GT300 cars run yellow versions of those items.

GT300

Make	Car	Category	Years competed	Image	Note
ASL	ASL ARTA Garaiya	JAF-GT	2003–2004
BMW	BMW 318i Coupe	JAF-GT	1996–1997
	BMW M3	JAF-GT	1996 (E30 generation) 1996–1999 (E36 generation) 2002–2003 (E46 generation)
Chevrolet	Chevrolet Corvette C4	JAF-GT	2002
Dodge	Dodge Viper	FIA GT2	2000–2002 (first generation) 2003 (second generation)		Initially competed as a detuned GT500 car
Ferrari	Ferrari F355	JAF-GT	1997–2000
	Ferrari 360	JAF-GT	2001–2004
Honda	Honda NSX	JAF-GT	1998, 2001–2004		From 2001–2002, Verno Tokai Dream28 raced with a detuned 1999-spec Honda NSX GT500 car M-Tec raced a detuned 2003-spec Honda NSX GT500 car in 2004
Mazda	Mazda RX-7	JAF-GT	1996–1997 (FC3S generation) 1996–2004 (FD3S generation)
	Mazda Roadster	JAF-GT	1997–1998
Mitsubishi	Mitsubishi Mirage C53A	JAF-GT	1996		Entered by a privateer
	Mitsubishi FTO	JAF-GT	1998–1999		Front-wheel drive
Mosler	Mosler MT900	JAF-GT	2001–2004
Nissan	Nissan Silvia	JAF-GT	1996–1997 (S13 generation) 1996–1999 (S14 generation) 1999–2004 (S15 generation)
	Nissan Skyline	JAF-GT	1996–1998 (R31 generation) 1996–1999 (R32 generation)
	Nissan Fairlady Z (Z33)	JAF-GT	2003–2004
Porsche	Porsche 911 GT2	FIA GT2 JAF-GT	1996–2001
	Porsche 911 GT3	FIA GT3 JAF-GT	1999–2004		Introduced by Team Taisan on Rd. 5 of the 1999 season
	Porsche Boxster	JAF-GT	2000
	Porsche 968	JAF-GT	2004		Built by Arktech Motorsports
Renault	Renault Sport Spider	JAF-GT	1997		Entered by a privateer
RGS	RGS Mirage GT-1	FIA GT1	2003		Lamborghini Countach kit car powered by a Chevrolet LS1 engine; the same car that ran in GT500 in 2000
Toyota	Toyota MR2	JAF-GT	1996–1999
	Toyota Cavalier	JAF-GT	1997–1998
	Toyota Celica	JAF-GT	1998–2000 (first generation) 2003–2004 (second generation)		Second generation car was introduced by Racing Project Bandoh on Rd. 3 of the 2003 season
	Toyota AE86	JAF-GT	1999–2001
	Toyota Corolla (AE101)	JAF-GT	2000
	Toyota MR-S	JAF-GT	2000–2004
Subaru	Subaru Impreza WRX STi	JAF-GT	1997–2001 (first generation) 2002–2004 (second generation)		Second generation car is a four-door sedan
Vemac	Vemac RD320R	JAF-GT	2002–2004

Masahiko Kageyama and Morio Nitta are tied for the record of most drivers championship won in GT1/GT300 class with three. Masahiko Kageyama was the first driver to win multiple championship as well as the sport's first two-time and three-time champion, all of them won consecutively.

Season	Category	Drivers' Championship			Teams' Championship
		Driver(s)	Car		Team	Car
1993	GT	Masahiko Kageyama	Nissan Skyline GT-R R32		not awarded
1994	GT1	Masahiko Kageyama	Nissan Skyline GT-R R32		Calsonic Hoshino Racing	Nissan Skyline GT-R R32
	GT2	Sakae Obata	Porsche 964 Carrera RS		Kegani Racing	Porsche 964 Carrera RS
1995	GT1	Masahiko Kageyama	Nissan Skyline GT-R R33		Team Taisan	Porsche 911 GT2
	GT2	Kaoru Hoshino Yoshimi Ishibashi	Nissan Skyline GTS-R		Team Gaikokuya	Nissan Skyline GTS-R
1996	GT500	David Brabham John Nielsen	McLaren F1 GTR-BMW		Team Lark	McLaren F1 GTR-BMW
	GT300	Keiichi Suzuki Morio Nitta	Porsche Carrera RSR		Team Taisan Jr.	Porsche 964 Carrera RSR
1997	GT500	Pedro de la Rosa Michael Krumm	Toyota Supra		Toyota Castrol Team TOM'S	Toyota Supra
	GT300	Hideo Fukuyama Manabu Orido	Nissan Silvia S14		RS-R Racing Team with Bandoh	Nissan Silvia S14
1998	GT500	Érik Comas Masami Kageyama	Nissan Skyline GT-R R33		Pennzoil NISMO	Nissan Skyline GT-R R33
	GT300	Keiichi Suzuki Shingo Tachi	Toyota MR2		Team Taisan Jr. with Tsuchiya	Toyota MR2
1999	GT500	Érik Comas	Nissan Skyline GT-R R34		Toyota Castrol Team TOM'S	Toyota Supra
	GT300	Morio Nitta	Toyota MR2		Momocorse Racing with Tsuchiya	Toyota MR2
2000	GT500	Ryo Michigami	Honda NSX		Mugen × Dome Project	Honda NSX
	GT300	Hideo Fukuyama	Porsche 996 GT3R		Team Taisan Advan	Porsche 996 GT3R
2001	GT500	Hironori Takeuchi Yuji Tachikawa	Toyota Supra		Nismo Hiroto/Xanavi	Nissan Skyline GT-R R34
	GT300	Nobuyuki Oyagi Takayuki Aoki	Nissan Silvia S15		Team Taisan Advan	Porsche 911 GT3R
2002	GT500	Juichi Wakisaka Akira Iida	Toyota Supra		Mugen × Dome Project	Honda NSX
	GT300	Morio Nitta Shinichi Takagi	Toyota MR-S		Team Taisan Advan	Porsche 911 GT3R
2003	GT500	Satoshi Motoyama Michael Krumm	Nissan Skyline GT-R R34		Xanavi Nismo	Nissan Skyline GT-R R34
	GT300	Mitsuhiro Kinoshita Masataka Yanagida	Nissan Fairlady Z Z33		Team Taisan Advan	Chrysler Viper GTS-R Porsche 911 GT3R
2004	GT500	Satoshi Motoyama Richard Lyons	Nissan Fairlady Z Z33		Nismo Xanavi/Motul Pitwork	Nissan Fairlady Z Z33
	GT300	Tetsuya Yamano Hiroyuki Yagi	Honda NSX		M-TEC	Honda NSX

• Super GT website (in English and Japanese)