William Karlsson (racing driver)

William Karlsson
Karlsson in 2025
NationalitySweden Swedish
Born (2005-10-18) 18 October 2005
Katrineholm, Sweden
RelativesNicklas Karlsson (father)
Categorisation FIA Silver
Championship titles
2021Formula Nordic

William Antonio Karlsson (born 18 October 2005) is a Swedish racing driver who competes in the LMP3 class of the Le Mans Cup for Inter Europol Competition.

Personal life

Karlsson is the son of Nicklas Karlsson, a former racing driver who founded NIKA Racing in 2006.[1][2]

Career

Towards the end of 2019, Karlsson made his single-seater debut in the Aquila Synergy Cup Sweden.[3] Moving to his family's NIKA Racing to race in Formula Nordic the following year,[4] Karlsson took his only win of the season at Mantorp Park en route to fifth in points.[5] Remaining in the series for 2021,[6] Karlsson took seven wins and five other podiums to secure the series title.[7][8] In 2022, Karlsson joined Renauer Motorsport to compete in the ACCR Formula 4 Trophy.[9][10] However, he later joined BVM Racing to compete in the Italian F4 Championship,[11] taking his only points of the season in race three at the Red Bull Ring.[12]

Karlsson driving for KIC Motorsport at the Red Bull Ring in FRECA in 2023.

The following year, Karlsson joined Drivex to compete in the newly-formed Eurocup-3.[13] Competing in the first three rounds, Karlsson scored his only points of the season at Aragón, finishing eighth and ninth in the two races.[14][15] After a one-off appearance in Porsche Sprint Challenge Scandinavia,[16] Karlsson joined KIC Motorsport to compete in select rounds of the Formula Regional European Championship,[17] taking a best result of 20th at Monza.[18]

Karlsson's Inter Europol LMP3 at the 2025 Road to Le Mans.

After spending 2024 on the sidelines, Karlsson returned to single-seaters in early 2025 with Renauer Motorsport at the second Red Bull Ring round of F4 CEZ, finishing second twice.[19] During 2025, Karlsson made his endurance prototype debut, racing for Inter Europol Competition at the Road to Le Mans in LMP3 Pro-Am,[20] finishing fifth in both races.[21] In 2026, Karlsson returned to Inter Europol and the Le Mans Cup to compete in his rookie season in the LMP3 class alongside Christian Dannemand Jørgensen.[22]

Karting record

Karting career summary

Season Series Team Position
2014 MKR Series Sweden — Cadet Katrineholms MK
2015 MKR Series Sweden — Formula Micro 6th
Göteborgs Stora Pris — Micro 5th
Juniorfestivalen — Micro 2nd
Kristianstad KK Grande Finale — Micro 1st
2016 MKR Series Sweden — Junior 60 7th
Swedish Kart Championship — Junior 60 NIKA Racing 10th
Göteborgs Stora Pris — Junior 60 5th
WSK Final Cup — 60 Mini Birel ART Racing NC
2017 WSK Champions Cup — 60 Mini Birel ART Racing NC
WSK Super Master Series — 60 Mini 88th
South Garda Winter Cup — 60 Mini NC
MKR Series Sweden — Junior 60 KAK Motorsport 4th
Swedish Kart Championship — Junior 60 14th
Raket Cup Sweden — Mini 38th
BNL Golden Trophy — Junior Max 31st
2018 Andrea Margutti Trophy — OK-J JP Racing 26th
Swedish Championship — OK-J 23rd
SverigeCupen — OK-J 7th
Deutsche Kart-Meisterschaft — OK-J JP Racing NC
Karting World Championship — OK-J NC
2019 South Garda Winter Cup — OK-J Ward Racing 28th
WSK Super Master Series — OK-J 77th
Swedish Championship — OK-J 9th
Karting European Championship — OK-J Nika International 99th
Deutsche Kart-Meisterschaft — OK-J 15th
Sources:[23][24]

Racing record

Racing career summary

Season Series Team Races Wins Poles F/Laps Podiums Points Position
2019 Aquila Synergy Cup Sweden 6 0 0 0 0 107 11th
2020 Formula Nordic NIKA Racing 16 1 0 0 8 199 5th
2021 Formula Nordic NIKA Racing 15 7 6 5 12 305 1st
2022 Italian F4 Championship BVM Racing 17 0 0 0 0 1 26th
2023 Eurocup-3 Drivex 6 0 0 0 0 6 17th
Porsche Sprint Challenge Scandinavia Porsche Experience Racing 2 0 0 0 0 16.5 18th
Formula Regional European Championship KIC Motorsport 4 0 0 0 0 0 40th
2025 Formula 4 CEZ Championship Renauer Motorsport 3 0 0 0 2 42 14th
Le Mans Cup – LMP3 Pro-Am Inter Europol Competition 2 0 0 0 0 12 21st
2026 Le Mans Cup – LMP3 Inter Europol Competition
Sources:[25][23]

Complete Italian F4 Championship results

(key) (Races in bold indicate pole position) (Races in italics indicate fastest lap)

Year Team 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 DC Points
2022 BVM Racing IMO
1		 IMO
2		 IMO
3		 MIS
1
Ret		 MIS
2
24		 MIS
3
16		 SPA
1
23		 SPA
2
24		 SPA
3
18		 VLL
1
22		 VLL
2
15		 VLL
3
16		 RBR
1		 RBR
2
24†		 RBR
3
10		 RBR
4
15		 MNZ
1
13		 MNZ
2
23		 MNZ
3
C		 MUG
1
22		 MUG
2
29		 MUG
3
19		 26th 1

Complete Eurocup-3 results

(key) (Races in bold indicate pole position) (Races in italics indicate fastest lap)

Year Team 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 DC Points
2023 Drivex SPA
1
11		 SPA
2
14		 ARA
1
8		 ARA
2
9		 MNZ
1
13		 MNZ
2
12		 ZAN
1		 ZAN
2		 JER
1		 JER
2		 EST
1		 EST
2		 CRT
1		 CRT
2		 CAT
1		 CAT
2		 17th 6

Complete Formula Regional European Championship results

(key) (Races in bold indicate pole position) (Races in italics indicate fastest lap)

Year Team 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 DC Points
2023 KIC Motorsport IMO
1		 IMO
2		 CAT
1		 CAT
2		 HUN
1		 HUN
2		 SPA
1		 SPA
2		 MUG
1		 MUG
2		 LEC
1		 LEC
2		 RBR
1
28		 RBR
2
24		 MNZ
1
20		 MNZ
2
25		 ZAN
1		 ZAN
2		 HOC
1		 HOC
2		 40th 0

Complete Formula 4 CEZ Championship results

(key) (Races in bold indicate pole position) (Races in italics indicate fastest lap)

Year Team 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 DC Points
2025 Renauer Motorsport RBR1
1
 RBR1
2
 RBR1
3
 RBR2
1
2		 RBR2
2
2		 RBR2
3
7		 SAL
1
 SAL
2
 SAL
3
 MOS
1
 MOS
2
 MOS
3
 SVK
1
 SVK
2
 SVK
3
 BRN
1
 BRN
2
 BRN
3
 14th 42

Complete Le Mans Cup results

(key) (Races in bold indicate pole position; results in italics indicate fastest lap)

Year Entrant Class Chassis 1 2 3 4 5 6 7 Rank Points
2025 Inter Europol Competition LMP3 Pro-Am Ligier JS P325 BAR
 LEC
 LMS
1
5		 LMS
2
5		 SPA
 SIL
 POR
 21st 12
2026 Inter Europol Competition LMP3 Ligier JS P325 CAT
12		 LEC
Ret		 LMS
16		 SPA
 SIL
 ALG
 22nd* 0*

References

  1. ↑ Göransson, Anders (16 April 2014). "Enda svenska VM-teamet kommer från Katrineholm". kkuriren.se (in Swedish). Retrieved 21 July 2026.
  2. ↑ "Familjeteam i Katrineholm bakom toppsatsning i racing: "Fattade tycke för fart"". svt.se (in Swedish). 8 November 2021. Retrieved 21 July 2026.
  3. ↑ Göransson, Anders (8 February 2019). "William debuterar i nya racingklassen". kkuriren.se (in Swedish). Retrieved 21 July 2026.
  4. ↑ "NIKA Racing satsar på Formula Nordic 2020". sbf.klubbenonline.se (in Swedish). 25 March 2020. Retrieved 21 July 2026.
  5. ↑ "William Karlsson var helgens bästa poängplockare när det tätnade i toppen inför Formula Nordicfinalen". sbf.klubbenonline.se (in Swedish). 6 October 2020. Retrieved 21 July 2026.
  6. ↑ Gustavsson, Bengt-Åce (15 April 2021). "William Karlsson vill fortsätta att utvecklas i Formula Nordic 2021". formulanordic.se (in Swedish). Retrieved 21 July 2026.
  7. ↑ "Full pott för William Karlsson i Formula Nordic". sbf.klubbenonline.se (in Swedish). 13 July 2021. Retrieved 21 July 2026.
  8. ↑ Hägglund, Christer (6 October 2021). "William Karlsson mästare i Formula Nordic". motorsportmagasinet.se (in Swedish). Retrieved 21 July 2026.
  9. ↑ Hägglund, Christer (4 March 2022). "William Karlsson klar för ACCR Formula 4". motorsportmagasinet.se (in Swedish). Retrieved 21 July 2026.
  10. ↑ "Lokala förartalangen får chans i Europa: "Dröm går i uppfyllelse"". svt.se (in Swedish). 4 March 2022. Retrieved 21 July 2026.
  11. ↑ Wood, Ida (20 June 2022). "William Karlsson to do more Italian F4 as ACCR F4 programme awaits". formulascout.com. Retrieved 21 July 2026.
  12. ↑ Wood, Ida (11 September 2022). "Sztuka wins, Antonelli punctures in third Italian F4 bout in Austria". formulascout.com. Retrieved 21 July 2026.
  13. ↑ Berggren, Jan-Erik (30 March 2023). "William Karlsson, 17, redo för ny F3-serie i Europa – siktar på F1". teknikensvarld.expressen.se (in Swedish). Retrieved 21 July 2026.
  14. ↑ Wood, Ida (27 May 2023). "Esteban Masson wins in Eurocup-3 at Motorland Aragon". formulascout.com. Retrieved 21 July 2026.
  15. ↑ Wood, Ida (28 May 2023). "Masson doubles up at Aragon with Eurocup-3 pole and win". formulascout.com. Retrieved 21 July 2026.
  16. ↑ Nilsson, Stellan (17 August 2023). "17-årige William tar plats i prinsens Porsche". kkuriren.se (in Swedish). Retrieved 21 July 2026.
  17. ↑ Wood, Ida (6 September 2023). "Bruno del Pino and William Karlsson join the FREC grid in Austria". formulascout.com. Retrieved 21 July 2026.
  18. ↑ Wood, Ida (16 September 2023). "Antonelli extends FREC lead at Monza with fourth win". formulascout.com. Retrieved 21 July 2026.
  19. ↑ Gascoigne, Roger (19 May 2025). "Trappa and Walther share F4 CEZ spoils at the Red Bull Ring". formulascout.com. Retrieved 21 July 2026.
  20. ↑ "43 LMP3 et 15 GT3 au Road to Le Mans". endurance-info.com (in French). 15 April 2025. Retrieved 21 July 2026.
  21. ↑ Seel, Annie. "William Karlsson faces this year's Road to Le Mans - the biggest challenge of the year". motorextra.se. Retrieved 21 July 2026.
  22. ↑ "William Karlsson makes his Le Mans Cup Endurance debut in Spain on April 11". motorextra.se. Retrieved 21 July 2026.
  23. 1 2 "William Karlsson | Racing career profile | Driver Database". www.driverdb.com. Retrieved 19 July 2026.
  24. ↑ Kartcom. "Karlsson William". Retrieved 19 July 2026.
  25. ↑ "William Karlsson Results". motorsportstats.com. Retrieved 19 July 2026.
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