| UIM F4 World Champions (1982-2025) | |||
|---|---|---|---|
| Season | Driver | Country | Flag |
| F4-S World Championship Era (2013-present) | |||
| 🏆 2025 | Nils Slakteris | LAT |  |
| 2024 | André Solvang | NOR |  |
| 2023 | Jarno Vilmunen | FIN |  |
| 2022 | Stefan Arand | EST |  |
| 2021 | Sami Reinikainen | FIN | |
| 2020 | Alexander Lindholm | FIN | |
| 2019 | Tuukka Lehtonen | FIN | |
| 2018 | Morgan Jernfast | SWE |  |
| 2017 | Juho-Matti Manninen | FIN | |
| 2016 | Juho-Matti Manninen | FIN | |
| 2015 | Alberto Comparato | ITA |  |
| 2014 | Alberto Comparato | ITA | |
| 2013 | Aron Tabori | HUN |  |
| F4-S European Championship Era (2010-2012) | |||
| 2012 | Tobias Soderling | SWE | |
| 2011 | Scott Curtis | GBR |  |
| 2011 | Martins Morozs | LAT | |
| 2010 | Mark Williams | GBR | |
| SL-60 Era (2005-2009) | |||
| 2009 | Scott Curtis | GBR | |
| 2009 | Stefan Hagin | GER |  |
| 2008 | Daniel Sparring | SWE | |
| 2008 | Richard Bodrogvolgyi | HUN | |
| 2007 | Mark Williams | GBR | |
| 2006 | Christoffer Erikson | FIN | |
| 2005 | Mickael Fremondiere | FRA |  |
| S.850 / Stock Engine (SE) Era (1982-2004) | |||
| 2004 | Joachim Brunila | FIN | |
| 2003 | Pedro Filipe Sessarego Fortuna | POR |  |
| 2002 | Anders Forsstrom | FIN | |
| 2001 | Duarte Benavente | POR | |
| 2000 | Anders Forsstrom | FIN | |
| 1999 | Anders Forsstrom | FIN | |
| 1998 | Pal Virik Nilsen | ITA | |
| 1997 | Roger Lonnberg | FIN | |
| 1996 | Luca Fornasarig | ITA | |
| 1995 | David Giggins | GBR | |
| 1994 | Massimo Roggiero | ITA | |
| 1993 | Rolf Magne Sunde | NOR | |
| 1992 | Sami Pennanen | FIN | |
| 1991 | Sami Pennanen | FIN | |
| 1990 | Bjarne Hornvedt | NOR | |
| 1989 | Bjarne Hornvedt | NOR | |
| 1988 | Gert Ladefoged | DEN |  |
| 1987 | Mats Kimby | SWE | |
| 1986 | Owen Jelf | GBR | |
| 1984 | Per von Bonsdorff | SWE | |
| 1983 | Andrew Elliott | GBR | |
| 1982 | Henrik Kruse | DEN | |
Championship Evolution
The UIM Formula 4S World Championship traces its lineage back over four decades through several class evolutions:
1982-2004: S.850 and Stock Engine (SE) Era
The championship began in 1982 under earlier circuit racing class specifications including S.850 and Stock Engine (SE) categories. These predecessor classes established the foundation for affordable, competitive circuit racing across Europe.
2005-2009: SL-60 Era
In 2005, the class was restructured and renamed SL-60, with the first races held in Scandinavia. This marked a shift toward ecological alternatives using four-stroke engines. In 2009, the class was selected as the foundation for the ADAC Masters international series in Germany.
2010-2012: F4-S European Championship
The class received its current name Formula 4S (F4-S) in 2010, when it was also granted European Championship status by the UIM. The “S” designation refers to four-stroke engines, distinguishing it from two-stroke Formula classes. In 2010, a promotional F4-S series launched alongside F1H2O events to provide a pathway for young drivers.
2013-Present: F4-S World Championship
The class achieved World Championship status in 2013, marking its recognition as a premier entry-level formula for circuit racing. The championship has continued to evolve, with the UIM Council voting in October 2025 to mandate crash boxes, rear-mounted balloon airbags, and increased minimum weight for boats manufactured after January 2026.
Note: Multiple champions listed in some years (2008, 2009, 2011) represent separate championship categories during transitional periods as the class structure evolved.
