2025 F4 Japanese Championship

2025 F4 Japanese Championship

Champion Class Drivers' champion:
Tokiya Suzuki
Champion Class Teams' Champion:
HYDRANGEA Kageyama Racing
Independent Class Drivers' champion:
Nobuhiro Imada
Independent Class Teams' Champion:
B-Max Racing Team

Previous

2024

Next

2026

Parent series:
Super GT

The 2025 F4 Japanese Championship season was the eleventh season of the F4 Japanese Championship.

This was the second season for the second-generation MCSC-24 chassis constructed by Toray Carbon Magic, and TOM'S TMA43 engine which produces 180 horsepower. ^[1]

Teams and drivers

All teams competed with an identical Toray Carbon Magic MCSC-24 chassis and TOM'S 2-litre naturally aspirated engine. ^[1]

Team	No.	Driver	Rounds
Champion Class
Team 5ZIGEN	3	Sena Yamamoto [2]	1–3, 6
Buzz Racing	7	Aoto Nagahara [3]	3, 5
TGM Grand Prix	8	Leon Ochiai [4]	All
	53	Shota Sakai [4]	All
Zap Speed	14	Masaki Murata [2]	All
HYDRANGEA Kageyama Racing	15	Ryusho Nakazato [5]	2–6
	16	Ryo Shirasaki [2]	All
	17	Itsuki Sato [2]	All
Akiland Racing	19	Keito Matsui [2]	All
TGR-DC Racing School	28	Kiyoshi Umegaki [6]	All
	29	Tokiya Suzuki [6]	All
	35	Megumu Suzuki [6]	All
	36	Takahiro Kikuchi [6]	All
	37	Masana Muto [6]	All
	38	Yuzuki Miura [6]	All
Drago Corse	33	Yuta Suzuki [2]	All
	34	Fuki Tanaka [2]	All
B-Max Racing Team [a] HFDP with B-Max Racing Team [a]	43	Tosei Moriyama [7]	All
	50	Kotaro Shimbara [8]	All
	51	Syo Momose [8]	All
	52	Ayato Iwasaki [9]	All
Ponos Racing	45	Ryota Horachi [10]	All
	54	Ryuma Sako [10]	All
Fujita Pharmacy Racing	46	Shouma Arimura [2]	All
Ragno Motor Sport	48	Lin Chenghua [2]	1–2
		Kaoru Yoshida [11]	4
OTG Motor Sports	60	Kenta Kumagai [12]	All
	80	Miki Onaga [12]	All
HELM Motorsports	62	Haruto Nakai [13]	All
	63	Fuji Kishi [13]	All
Skill Speed	77	Yasumasa Kano [2]	1
Dr Dry Racing Team	87	Rio Shimono [2]	1–3, 5–6
		Rikuto Toyoshima [11]	4
Bionic Jack Racing	97	Ai Miura [2]	All
Independent Class
Day Dream Racing	4	Yuichi Sasaki [2]	All
Team 5ZIGEN	5	Motohiro Kotani [2]	1–3, 6
Buzz Racing	6	"Ken Alex" [2]	All
	7	Hitoshi Sakai [2]	1
Rn-sports	10	Isao Nakashima [2]	All
	11	Masayuki Ueda [2]	All
	74	Kentaro Kojima [2]	All
Eagle Racing	21	Tadakazu Kojima [2]	All
	40	Shoichiro Akamatsu [2]	All
N-Speed	23	"Yugo" [2]	All
B-Max Racing Team	30	"Dragon" [9]	All
	44	Nobuhiro Imada [9]	All
	88	Kazutaka Miura [9]	2–4
		Yasuhiro Shimizu	5–6
Field Motorsport	55	"Kentaro" [2]	All
HELM Motorsports	61	William Sakai [13]	All
	64	Go Shimizu [13]	1–3, 6
Akiland Racing	71	Masayoshi Oyama [2]	All
	96	Makio Saito [2]	All
Dr Dry Racing Team	86	Hachiro Osaka [2]	All
Bionic Jack Racing	98	"Ikari" [2]	All

Race calendar and results

All rounds are held in Japan and support the Super GT events in Japan, except for Okayama. ^[14]

Round		Circuit	Date	Pole position	Fastest lap	Winning driver	Winning team	Independent Class winner
1	R1	Fuji Speedway, Oyama	3 May	Ryo Shirasaki	Itsuki Sato	Tokiya Suzuki	TGR-DC Racing School	"Kentaro"
	R2		4 May	Ryo Shirasaki	Ryo Shirasaki	Ryo Shirasaki	HYDRANGEA Kageyama Racing	"Dragon"
	R3				Ryo Shirasaki	Itsuki Sato	HYDRANGEA Kageyama Racing	"Kentaro"
2	R4		2 August	Itsuki Sato	Tokiya Suzuki	Itsuki Sato	HYDRANGEA Kageyama Racing	"Dragon"
	R5		3 August	Itsuki Sato	Itsuki Sato	Itsuki Sato	HYDRANGEA Kageyama Racing	"Dragon"
3	R6	Suzuka Circuit, Suzuka	23 August	Kotaro Shimbara	Tosei Moriyama	Itsuki Sato	HYDRANGEA Kageyama Racing	"Dragon"
	R7		24 August	Kotaro Shimbara	Itsuki Sato	Kotaro Shimbara	HFDP with B-Max Racing Team	Nobuhiro Imada
4	R8	Sportsland Sugo, Murata	20 September	Tokiya Suzuki	Itsuki Sato	Tokiya Suzuki	TGR-DC Racing School	"Kentaro"
	R9			Tokiya Suzuki	Itsuki Sato	Tokiya Suzuki	TGR-DC Racing School	"Kentaro"
	R10		21 September		Itsuki Sato	Itsuki Sato	HYDRANGEA Kageyama Racing	Nobuhiro Imada
5	R11	Autopolis, Hita	18–19 October	Tokiya Suzuki	Tokiya Suzuki	Tokiya Suzuki	TGR-DC Racing School	"Kentaro"
	R12			Tosei Moriyama	Ryo Shirasaki	Ryo Shirasaki	HYDRANGEA Kageyama Racing	Nobuhiro Imada
6	R13	Mobility Resort Motegi, Motegi	1 November	Kotaro Shimbara	Kotaro Shimbara	Kotaro Shimbara	HFDP with B-Max Racing Team	Yasuhiro Shimizu
	R14		2 November	Itsuki Sato	Itsuki Sato	Ryo Shirasaki	HYDRANGEA Kageyama Racing	"Kentaro"

Championship standings

Points were awarded as follows:

Position	1st	2nd	3rd	4th	5th	6th	7th	8th	9th	10th
Points	25	18	15	12	10	8	6	4	2	1

Drivers' standings

Champion Class

Pos Driver FUJ1 FUJ2 SUZ SUG AUT MOT Pts R1 R2 R3 R4 [b] R5 R6 R7 R8 R9 R10 R11 R12 R13 R14 1 Tokiya Suzuki 1 3 3 26 7 3 6 1 1 2 1 4 2 4 219 2 Itsuki Sato 11 2 1 1 1 1 2 2 2 1 2 5 Ret 14 212.5 3 Ryo Shirasaki 8 1 23 3 3 7 10 4 3 3 4 1 7 1 168.5 4 Kotaro Shimbara 21 6 13 2 2 2 1 13 5 16 8 8 1 7 127 5 Ryota Horachi 5 5 24 7 4 4 4 14 12 Ret 7 6 3 5 98 6 Syo Momose 6 21 6 4 5 6 3 9 11 6 6 3 13 6 96 7 Kiyoshi Umegaki 2 10 4 25 9 25 11 6 7 4 11 11 4 2 89 8 Tosei Moriyama 3 4 2 6 6 16 14 16 13 20 5 2 9 12 88 9 Kenta Kumagai Ret Ret 17 10 13 5 5 3 9 5 10 9 12 18 50.5 10 Ryuma Sako 12 11 8 5 8 24 8 12 4 18 20 24 6 11 37 11 Megumu Suzuki 9 7 11 20 21 10 12 7 8 8 12 12 8 8 31 12 Yuzuki Miura 14 13 Ret 22 15 27 9 15 16 14 15 10 5 3 28 13 Leon Ochiai 23 14 10 11 11 26 Ret 5 6 7 19 15 Ret 9 27 14 Ayato Iwasaki 4 19 5 24 10 13 15 23 15 17 13 13 17 20 23 15 Masana Muto 15 Ret DNQ DNS 19 12 17 17 21 10 3 7 18 19 22 16 Keito Matsui 10 Ret 12 19 22 8 7 8 14 12 WD WD 15 Ret 15 17 Yuta Suzuki 16 8 7 13 14 Ret 27 11 10 13 25 22 14 13 11 18 Fuki Tanaka 7 Ret Ret 12 12 Ret 23 18 18 15 17 16 10 10 8 19 Takahiro Kikuchi Ret 15 15 17 18 9 29 10 24 24 9 14 16 26 5 20 Haruto Nakai 22 9 22 9 27 11 19 28 25 23 19 18 19 15 3 21 Fuji Kishi 24 16 18 8 26 15 26 27 26 21 22 DNS 20 21 2 22 Sena Yamamoto 20 12 9 21 16 14 18 25 25 2 23 Rikuto Toyoshima 19 17 9 2 24 Shota Sakai 18 18 14 23 23 23 13 22 24 11 16 17 23 16 0 25 Masaki Murata Ret Ret DNS 16 28 18 28 21 25 19 23 21 13 Ret 0 26 Miki Onaga 13 Ret 20 18 20 22 24 20 23 Ret 21 19 22 23 0 27 Ryusho Nakazato 14 25 19 16 24 Ret 26 Ret 23 27 Ret 0 28 Rio Shimono 17 DNS 16 DNS 24 20 21 15 27 24 24 0 29 Ai Miura 19 17 19 15 17 17 20 26 20 25 24 25 21 17 0 30 Kaoru Yoshida Ret 19 22 0 31 Shouma Arimura Ret Ret DNQ DNQ DNQ 28 25 25 22 27 Ret 20 26 22 0 32 Lin Chenghua DNQ 20 Ret DNQ DNQ 0 33 Aoto Nagahara 21 22 26 26 0 34 Yasumasa Kano DNQ DNQ 21 0 Pos Driver R1 R2 R3 R4 [b] R5 R6 R7 R8 R9 R10 R11 R12 R13 R14 Pts FUJ1 FUJ2 SUZ SUG AUT MOT

Key Colour Result Gold Winner Silver Second place Bronze Third place Green Other points position Blue Other classified position Not classified, finished (NC) Purple Not classified, retired (Ret) Red Did not qualify (DNQ) Did not pre-qualify (DNPQ) Black Disqualified (DSQ) White Did not start (DNS) Race cancelled (C) Blank Did not practice (DNP) Excluded (EX) Did not arrive (DNA) Withdrawn (WD) Did not enter (cell empty) Text formatting Meaning Bold Pole position Italics Fastest lap † — Did not finish but classified

Independent Class

Pos	Driver	FUJ1			FUJ2		SUZ		SUG			AUT		MOT		Pts
		R1	R2	R3	R4 [b]	R5	R6	R7	R8	R9	R10	R11	R12	R13	R14
1	Nobuhiro Imada	2	4	Ret	2	2	3	1	3	5	1	2	1	2	2	226
2	"Kentaro"	1	3	1	3	Ret	5	2	1	1	Ret	1	3	5	1	225.5
3	"Dragon"	Ret	1	5	1	1	1	3	2	2	3	4	Ret	13	3	190.5
4	Masayuki Ueda	DNQ	DNQ	DNQ	6	3	2	4	5	4	5	3	4	6	15	116
5	"Ken Alex"	4	15	2	5	5	4	13	15	11	2	7	5	4	7	109
6	Isao Nakashima	3	2	3	4	8	Ret	Ret	4	3	9	8	Ret	10	11	92
7	Shoichiro Akamatsu	8	13	Ret	11	7	6	7	8	8	6	6	6	7	5	72
8	Makio Saito	5	8	4	Ret	4	8	Ret	6	6	4	11	12	14	10	71
9	William Sakai	7	6	7	8	Ret	9	9	10	9	8	Ret	8	3	4	64
10	Yasuhiro Shimizu											5	2	1	9	55
11	Go Shimizu	13	10	11	7	14	7	5						8	6	32
12	"Ikari"	11	5	8	12	15	12	16	7	7	10	12	9	Ret	Ret	29
13	Masayoshi Oyama	6	9	6	DNQ	DNQ	11	14	9	15	11	14	10	11	12	21
14	Yuichi Sasaki	12	14	10	10	10	14	11	11	13	7	10	11	9	8	15.5
15	Motohiro Kotani	Ret	7	Ret	Ret	12	15	6						12	14	14
16	Kentaro Kojima	10	12	Ret	13	11	13	8	12	10	13	9	7	Ret	13	14
17	Tadakazu Kojima	Ret	17	9	13	6	10	10	WD	WD	WD	WD	WD	WD	WD	12
18	Hachiro Osaka	9	11	13	9	13	16	Ret	14	14	12	13	13	DNQ	DNQ	3
19	Kazutaka Miura				14	9	Ret	12	13	12	14					2
20	Hitoshi Sakai	14	16	12												0
21	"Yugo"	DNQ	DNQ	DNQ	DNQ	DNQ	17	15	16	16	15	15	14	DNQ	DNQ	0
Pos	Driver	R1	R2	R3	R4 [b]	R5	R6	R7	R8	R9	R10	R11	R12	R13	R14	Pts
		FUJ1			FUJ2		SUZ		SUG			AUT		MOT

Teams' standings

Only the best finisher scored points for their team.

Champion Class

Pos	Driver	FUJ1			FUJ2		SUZ		SUG			AUT		MOT		Pts
		R1	R2	R3	R4 [b]	R5	R6	R7	R8	R9	R10	R11	R12	R13	R14
1	HYDRANGEA Kageyama Racing	8	1	1	1	1	1	2	2	2	1	2	1	7	1	269.5
2	TGR-DC Racing School	1	3	3	17	7	3	6	1	1	2	1	4	2	2	225
3	HFDP with B-Max Racing Team	6	6	6	2	2	2	1	9	5	6	6	3	1	6	168
4	Ponos Racing	5	5	8	5	4	4	4	12	4	18	7	6	3	5	116
5	B-Max Racing Team	3	4	2	6	6	14	14	16	13	17	5	2	9	12	87
6	OTG Motor Sports	14	Ret	17	10	13	5	5	3	9	5	10	9	11	18	49.5
7	TGM Grand Prix	18	14	10	11	11	23	13	5	6	7	16	15	23	9	27
8	Drago Corse	7	8	7	12	12	Ret	23	11	10	13	17	16	10	10	19
9	Akiland Racing	10	Ret	12	19	22	8	7	8	14	12	WD	WD	15	Ret	13
10	HELM Motorsports	23	9	18	8	26	11	19	27	26	21	18	18	19	15	4
11	Team 5ZIGEN	21	12	9	21	16	14	18						25	25	2
12	Dr Dry Racing Team	17	DNS	16	DNS	24	20	21	19	17	9	15	27	24	24	2
13	Zap Speed	Ret	Ret	DNS	16	28	18	28	21	25	19	23	21	13	Ret	0
14	Bionic Jack Racing	20	17	19	15	17	17	20	26	20	25	24	25	21	17	0
15	Ragno Motor Sport	DNQ	20	Ret	DNQ	DNQ			Ret	19	22					0
16	Fujita Pharmacy Racing	Ret	Ret	DNQ	DNQ	DNQ	28	25	25	22	27	Ret	20	26	22	0
17	Buzz Racing						21	22				25	26			0
18	Skill Speed	DNQ	DNQ	21												0
Pos	Driver	R1	R2	R3	R4 [b]	R5	R6	R7	R8	R9	R10	R11	R12	R13	R14	Pts
		FUJ1			FUJ2		SUZ		SUG			AUT		MOT

Independent Class

Pos	Driver	FUJ1			FUJ2		SUZ		SUG			AUT		MOT		Pts
		R1	R2	R3	R4 [b]	R5	R6	R7	R8	R9	R10	R11	R12	R13	R14
1	B-Max Racing Team	2	1	5	1	1	1	1	2	2	1	2	1	1	2	287.5
2	Field Motorsport	1	3	1	3	Ret	5	2	1	1	Ret	1	3	5	1	225.5
3	Rn-sports	3	2	3	4	3	2	4	4	3	5	3	4	6	11	171
4	Buzz Racing	4	15	2	5	5	4	13	15	11	2	7	5	4	7	109
5	HELM Motorsports	7	6	7	6	14	7	5	10	9	8	Ret	8	3	4	77
6	Eagle Racing	8	13	9	11	6	6	7	8	8	6	6	6	7	5	76
7	Akiland Racing	5	8	4	Ret	4	8	14	9	6	4	11	10	11	10	72
8	Bionic Jack Racing	11	5	8	12	15	12	16	7	7	10	12	9	Ret	Ret	29
9	Day Dream Racing	12	14	10	10	10	14	11	11	13	7	10	11	9	8	15.5
10	Team 5ZIGEN	Ret	7	Ret	Ret	12	15	6						12	14	14
11	Dr Dry Racing Team	9	11	13	9	13	16	Ret	14	14	12	13	13	DNQ	DNQ	3
12	N-Speed	DNQ	DNQ	DNQ	DNQ	DNQ	17	15	16	16	15	15	14	DNQ	DNQ	0
Pos	Driver	R1	R2	R3	R4 [b]	R5	R6	R7	R8	R9	R10	R11	R12	R13	R14	Pts
		FUJ1			FUJ2		SUZ		SUG			AUT		MOT

Notes

1. Car No. 43 & No. 52 entered as B-Max Racing Team, and car No. 50 & No. 51 entered as HFDP with B-Max Racing Team.
2. Only five of the 14 laps were completed, less than 75% of the race distance, thus half points were awarded.

References

1. "Japanese F4 reveals Gen2 design to be introduced in 2024". formulascout. 10 August 2022. Retrieved 10 August 2022.
2. "Finjo Muschlien on X: Here's Japanese F4's entry list for Round 1 at Fuji". X. 24 April 2025. Retrieved 1 April 2025.
3. "FIA-F4 選手権鈴鹿大会 エントリーリストお問い合わせ第 大会" (PDF). FIA F4 Japan. 18 August 2025. Retrieved 18 August 2025.
4. "TGM Grand PrixがFIA-F4に初参戦。池田代表「若手にチャンスを与える場所を作りたい」". as-web.jp. 7 December 2024. Retrieved 7 December 2024.
5. Muschlien, Finjo (29 April 2025). "Japanese F4: 2025 season guide". Feeder Series. Retrieved 29 April 2025.
6. "TOYOTA GAZOO Racing Presents its 2025 motorsport team setups in Japan". Toyota Gazoo Racing. 25 December 2024. Retrieved 25 December 2024.
7. "2025FIA-F4参戦体制（森山冬星選手を追加エントリー）". B-Max Racing Team. 15 April 2025. Retrieved 15 April 2025.
8. "Honda 2025 Motorsports Program Overview". Honda. 10 January 2025. Retrieved 10 January 2025.
9. "2025 FIA-F4（B-Max）参戦体制". B-Max Racing Team. 20 February 2025. Retrieved 20 February 2025.
10. "『PONOS RACING』2025年シーズン参戦体制のお知らせ". Ponos. 19 February 2025. Retrieved 19 February 2025.
11. "FIA-F4 選⼿権菅⽣⼤会 エントリーリスト" (PDF). F4 Japanese Championship. 15 September 2025. Retrieved 15 September 2025.
12. "2025 LM corsa/OTG Motorsports 体制発表". OTG Motorsports. 7 February 2025. Retrieved 7 February 2025.
13. "2025　FIA-F4 体制発表". HELM Motorsports. 30 April 2025. Retrieved 30 April 2025.
14. "Competition Calendar". JAF. 8 January 2025. Retrieved 8 January 2025.

External links

• Official website (in Japanese)