John Koster is a racing driver who competes in International GT. Koster has recorded 2 wins and 16 podiums from 46 starts.[1]
A Racer Rating of 1,663 ranks Koster 18756th of 38,983 indexed drivers, on an Elo scale where the strongest reach the high 8,000s. It is built from every indexed race in the driver's file.
| 2026-06-06 | Lime Rock Park GTC8 | P6 | −122 |
| 2026-06-06 | Lime Rock Park GTC8 | P5 | −58 |
| 2026-05-23 | Lime Rock GT992 | P2 | +67 |
| 2026-05-22 | Lime Rock SVRA | P5 | +19 |
| 2026-05-22 | Lime Rock GT992 | P2 | +77 |
| Rating won | Race | Series | Finish |
|---|---|---|---|
| +153 | Lime Rock 2022 | International GT | P1 |
| +142 | VIR 2021 | American Endurance Racing | P1 |
| +109 | Lime Rock Park 2018 | PCA Club Racing | P2 |
| +100 | Lime Rock Park 2018 | PCA Club Racing | P2 |
| +91 | Lime Rock 2026 | International GT | P2 |
| Season | Series | Team | Races | Wins | Podiums | DNFs | Poles | Points | Pos | Gain/Loss | Rating |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | ▸International GT | 4 | 0 | 4 | 0 | 0 | 0 | P9 | +302 | 1,663 | |
| ▸PCA Club Racing | 2 | 0 | 0 | 0 | 0 | 0 | P13 | −180 | |||
| ▸SVRA | 1 | 0 | 0 | 0 | 0 | 0 | — | +19 | |||
| 2025 | ▸PCA Club Racing | 3 | 0 | 0 | 0 | 0 | 0 | P11 | −295 | 1,522 | |
| 2024 | ▸PCA Club Racing | 2 | 0 | 0 | 0 | 0 | 0 | — | −165 | 1,817 | |
| 2023 | ▸International GT | 3 | 0 | 3 | 0 | 0 | 0 | P12 | −202 | 1,983 | |
| ▸PCA Club Racing | 1 | 0 | 0 | 0 | 0 | 0 | — | −174 | |||
| 2022 | ▸International GT | 1 | 1 | 1 | 0 | 0 | 0 | P23 | ↑700+153 | 2,358 | |
| 2021 | ▸PCA Club Racing | 7 | 0 | 0 | 1 | 0 | 0 | P12 | −373 | 1,505 | |
| ▸American Endurance Racing | 2 | 1 | 1 | 0 | 0 | 0 | P20 | +216 | |||
| 2020 | ▸American Endurance Racing | 2 | 0 | 1 | 0 | 0 | 0 | P30 | ↑355+86 | 1,603 | |
| 2019 | ▸PCA Club Racing | 9 | 0 | 1 | 2 | 0 | 0 | P15 | −36 | 1,661 | |
| 2018 | ▸PCA Club Racing | 4 | 0 | 4 | 0 | 0 | 0 | P7 | +312 | 1,303 | |
| 2017 | ▸PCA Club Racing | 5 | 0 | 1 | 1 | 0 | 0 | P11 | −94 | 1,256 |
| Rival | Rating | Raced | Ahead | Behind | Record |
|---|---|---|---|---|---|
| 🏳️ David Hutchings | 1,875 | 10 | 2 | 8 | 20% |
| 🇬🇧 Andrew Lynn | 625 | 10 | 9 | 1 | 90% |
| 🏳️ Jordan Simon | 1,408 | 9 | 6 | 3 | 67% |
| 🏳️ Jeffrey Neiblum | 1,159 | 9 | 1 | 8 | 11% |
| 🏳️ Steve Schindler | 1,801 | 7 | 1 | 6 | 14% |
| 🏳️ James Clemens | 1,563 | 7 | 2 | 5 | 29% |
| 🏳️ Lorenzo Pugliano | 420 | 7 | 6 | 1 | 86% |
| 🏳️ Michael Piera | 1,633 | 6 | 3 | 3 | 50% |
| 🇬🇧 David Dean | 1,602 | 6 | 3 | 3 | 50% |
| 🇺🇸 Dennis Howard | 598 | 6 | 4 | 2 | 67% |
| 🏳️ David MartinezHigher-rated | 4,030 | 4 | 3 | 1 | 75% |
| 🏳️ Attilio AlbaniHigher-rated | 3,337 | 4 | 3 | 1 | 75% |
| 🇺🇸 Aurora StrausFIA Silver | 3,005 | 3 | 1 | 2 | 33% |
| # | Driver | Series | Rating |
|---|---|---|---|
| 18,746 | 🏳️ Matt Clark | SCCA Regionals | 1,664 |
| 18,747 | 🏳️ Peter Oberdorfer | Nürburgring Langstrecken-Serie | 1,664 |
| 18,748 | 🏳️ Radovan Jarkovsky | American Endurance Racing | 1,664 |
| 18,749 | 🏳️ Alexander Kindermann | Nürburgring Langstrecken-Serie | 1,663 |
| 18,750 | 🇦🇹 Andreas Kreuzer | Nürburgring Langstrecken-Serie | 1,663 |
| 18,751 | 🏳️ Carsten Stuwe | Nürburgring Langstrecken-Serie | 1,663 |
| 18,752 | 🏳️ David Salvetti | American Endurance Racing | 1,663 |
| 18,753 | 🏳️ Eckhard Bihlmaier | Nürburgring Langstrecken-Serie | 1,663 |
| 18,754 | 🏳️ Griffin Fujii | PCA Club Racing | 1,663 |
| 18,755 | 🏳️ Jason Ames | BMW CCA Club Racing | 1,663 |
| 18,756 | 🏳️ John Koster | International GT | 1,663 |
| 18,757 | 🏳️ Marc Guimont | American Endurance Racing | 1,663 |
| 18,758 | 🏳️ Mark Hilderbrand | SVRA | 1,663 |
| 18,759 | 🏳️ Michael Milz | Nürburgring Langstrecken-Serie | 1,663 |
| 18,760 | 🇩🇪 Peter Hoffmann | Nürburgring Langstrecken-Serie | 1,663 |
| 18,761 | 🇦🇹 Roman Scharaditsch | Nürburgring Langstrecken-Serie | 1,663 |
| 18,762 | 🇩🇪 Sarah ganser | Nürburgring Langstrecken-Serie | 1,663 |
| 18,763 | 🏳️ Theo Milz | Nürburgring Langstrecken-Serie | 1,663 |
| 18,764 | 🇬🇧 Cem Osman | Nürburgring Langstrecken-Serie | 1,662 |
| 18,765 | 🇺🇸 Dom Bastien | Lucas Oil Formula Car Race Series | 1,662 |
| 18,766 | 🏳️ Oleg Predoliak | American Endurance Racing | 1,662 |
John Koster is a racing driver who competes in International GT. Koster has recorded 2 wins and 16 podiums from 46 starts.[1]
A Racer Rating of 1,663 ranks Koster 18756th of 38,983 indexed drivers, on an Elo scale where the strongest reach the high 8,000s. It is built from every indexed race in the driver's file.