Round 4 of the 2015 Japanese Super Formula Championship was held at Twin Ring Motegi, Japan on 23 August 2015. Hiroaki Ishiura was the race winner.
Race Result
| Pos. | No. | Driver | Abbreviation | Nationality | Team | Engine | Tyre | Laps | Race Time | Gap | Best Time |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 38 | Hiroaki Ishiura | ISH | Japan | P.MU/CERUMO · INGING | TOYOTA RI4A | Bridgestone | 52 | 1:23:44.456 | 178.89 km/h | 1:35.037 |
| 2 | 1 | Kazuki Nakajima | KAZ | Japan | PETRONAS TOM’S | TOYOTA RI4A | Bridgestone | 52 | 1:23:46.198 | 1.742 | 1:34.975 |
| 3 | 19 | J.P.L.de Oliveira | OLI | Brazil | LENOVO TEAM IMPUL | TOYOTA RI4A | Bridgestone | 52 | 1:24:09.231 | 24.775 | 1:35.698 |
| 4 | 2 | Andre Lotterer | LOT | Germany | PETRONAS TOM’S | TOYOTA RI4A | Bridgestone | 52 | 1:24:10.086 | 25.630 | 1:35.592 |
| 5 | 64 | Daisuke Nakajima | DAI | Japan | NAKAJIMA RACING | HONDA HR-414E | Bridgestone | 52 | 1:24:29.527 | 45.071 | 1:36.137 |
| 6 | 40 | Tomoki Nojiri | NOJ | Japan | DOCOMO DANDELION M40S | HONDA HR-414E | Bridgestone | 52 | 1:24:34.667 | 50.211 | 1:36.239 |
| 7 | 7 | Ryo Hirakawa | HIR | Japan | ACHIEVEMENT Team KYGNUS SUNOCO | TOYOTA RI4A | Bridgestone | 52 | 1:24:35.256 | 50.800 | 1:36.207 |
| 8 | 16 | Naoki Yamamoto | YAM | Japan | TEAM MUGEN | HONDA HR-414E | Bridgestone | 52 | 1:24:35.637 | 51.181 | 1:36.264 |
| 9 | 41 | Narain Karthikeyan | KAR | India | DOCOMO DANDELION M41Y | HONDA HR-414E | Bridgestone | 52 | 1:24:38.300 | 53.844 | 1:35.680 |
| 10 | 11 | Takuya Izawa | IZA | Japan | REAL | HONDA HR-414E | Bridgestone | 52 | 1:24:39.269 | 54.813 | 1:36.038 |
| 11 | 20 | Andrea Caldarelli | CAL | Italy | LENOVO TEAM IMPUL | TOYOTA RI4A | Bridgestone | 52 | 1:24:46.798 | 1:02.342 | 1:36.440 |
| 12 | 3 | James Rossiter | ROS | Great Britain | FUJI×D'station KONDO | TOYOTA RI4A | Bridgestone | 52 | 1:24:49.314 | 1:04.858 | 1:36.266 |
| 13 | 4 | William Buller | BUL | Great Britain | FUJI×D'station KONDO | TOYOTA RI4A | Bridgestone | 52 | 1:24:57.507 | 1:13.051 | 1:35.987 |
| 14 | 34 | Takashi Kogure | KOG | Japan | DRAGO CORSE | HONDA HR-414E | Bridgestone | 52 | 1:25:04.404 | 1:19.948 | 1:36.680 |
| 15 | 65 | Bertrand Baguette | BAG | Belgium | NAKAJIMA RACING | HONDA HR-414E | Bridgestone | 52 | 1:25:05.178 | 1:20.722 | 1:36.171 |
| 16 | 18 | Yuichi Nakayama | NAK | Japan | KCMG Elyse | TOYOTA RI4A | Bridgestone | 52 | 1:25:12.646 | 1:28.190 | 1:36.577 |
| 17 | 8 | Kamui Kobayashi | KOB | Japan | Team KYGNUS SUNOCO | TOYOTA RI4A | Bridgestone | 51 | 1:23:01.060 | 1 lap | 1:35.628 |
| 18 | 39 | Yuji Kunimoto | KUN | Japan | P.MU/CERUMO · INGING | TOYOTA RI4A | Bridgestone | 51 | 1:23:18.633 | 1 lap | 1:36.424 |
| DNF | 10 | Koudai Tsukakoshi | TSU | Japan | REAL | HONDA HR-414E | Bridgestone | 0 | 52 laps |