Mads Siljehaug

Mads Siljehaug
Siljehaug in 2022
NationalityNorway Norwegian
Born (1996-02-06) 6 February 1996
Lillehammer, Norway
Categorisation FIA Silver
Championship titles
2019
2013
2012		ADAC GT4 Germany
Formula Basic – Norwegian Cup
Formula Basic – Norwegian Championship

Mads Emil Hørlyk Siljehaug (born 6 February 1996) is a Norwegian racing driver competing in GT World Challenge America for Chicago Performance and Tuning Co. A former Reiter Engineering stalwart in GT4 and LMP3, he is the 2019 ADAC GT4 Germany champion and 2022 Le Mans Cup runner-up.

Career

Siljehaug made his single-seater debut in 2012, racing in Formula Basic and winning the Norwegian Championship in his rookie year,[1] and the Norwegian Cup the following year.[2] After a two-year hiatus, Siljehaug joined KTM-affiliated Reiter Engineering to race in the GT4 European Series as a member of the team's Young Stars programme.[3] In his first season in the series, Siljehaug took an overall win at Zandvoort and a Pro class win at Spa to secure runner-up honors in points.[4] Remaining with the team for 2017,[5] Siljehaug took a lone podium at Zandvoort to end the year 12th in the Silver Cup standings.[6]

Siljehaug driving Reiter Engineering's Lamborghini at Monza during the 2018 Blancpain GT Series.

After winning the Reiter Young Stars competition in late 2017, Siljehaug continued with the team to make his GT3 debut in the 2018 Blancpain GT Series Endurance Cup. Racing a Lamborghini Gallardo R-EX at all events except the 24 Hours of Spa, he scored a lone Silver Cup podium at Le Castellet alongside Patric Niederhauser and Lennart Marioneck.[7] During 2018, Siljehaug made select appearances for the team's GT4 squad, most notably winning twice in the GT4 Central European Cup.[8] In 2019, Siljehaug settled for a dual campaign in the GT4 European Series and the newly-created ADAC GT4 Germany.[9] In the former, Siljehaug qualified on pole at both Misano and Zandvoort, as well as taking his only podium in the latter round en route to a 12th-place points finish in the Silver Cup.[10] In ADAC GT4, Siljehaug scored wins at Zandvoort and Sachsenring and a pair of second-place finishes to secure the title for Felbermayr - Reiter.[11][12]

Staying in GT4 competition for 2020, Siljehaug switched to the GT4 America SprintX series with fellow KTM-fielding team Marco Polo Motorsports.[13] In his first season in the series, Siljehaug took overall wins at Sonoma and Road America, as well as four other Silver Cup podiums to end the year fourth in points.[14][15] During 2020, Siljehaug also made a one-off return to ADAC GT4 Germany with McLaren-fielding Dörr Motorsport at the Red Bull Ring.[16] Returning to Reiter Engineering for the following year, Siljehaug raced with them in select rounds of the 24H GT Series in the GTX class.[17] Racing a KTM X-Bow GTX Concept, Siljehaug scored wins at Mugello,[18] Le Castellet and Barcelona to secure runner-up honors in the class standings.[19][20] During 2021, Siljehaug also raced for Marco Polo Motorsports in the first three rounds of GT4 America,[21] taking a class podium at Sonoma,[22] as well as making a one-off appearance in Super Super Trucks at Long Beach, taking pole for race two.[23]

Siljehaug on his way to second in LMP3 at the 2022 Road to Le Mans.

Siljehaug switched over to LMP3 in 2022, joining Freddie Hunt in the Le Mans Cup as Reiter undertook its first prototype campaign.[24] At the wheel of a Ligier JS P320, Siljehaug won at Algarve and scored maximum points in race two at Le Mans as he ended the year runner-up in points.[25][26] During 2022, Siljehaug also raced for the team's "True Racing" banner in select rounds of the Nürburgring Langstrecken-Serie in the SPX class.[27] After competing in time attack events throughout the following two years,[28][29] Siljehaug returned to competitive racing in 2025, joining Marco Polo Motorsports to race in the GT4 America Series.[30] Racing a Toyota GR Supra GT4 Evo2 for select rounds, Siljehaug scored Silver Cup podiums at Road America and Barber,[31][32] as well as a pole at Sonoma en route to ninth in points.[33] The following year, Siljehaug joined Lamborghini-fielding Chicago Performance to make his GT World Challenge America debut in the Pro-Am class.[34]

Karting record

Karting career summary

Season Series Team Position
2009 Göteborgs Stora Pris – Mini DNF
2010 Norwegian Championship – Formula Yamaha 12th
2011 Norwegian Championship – Formula Yamaha 8th
2012 Norwegian Championship – KZ2 24th
Sources:[35]

Racing record

Racing career summary

Season Series Team Races Wins Poles F/Laps Podiums Points Position
2012 Formula Basic – Norwegian Cup 66 4th
Formula Basic – Factor-X Cup 4 2 1 0 2 47 8th
Formula Basic – Norwegian Championship 1st
2013 Formula Basic – Norwegian Cup NMK Sör-Gudbrandsdal 10 7 4 5 8 185 1st
2016 GT4 European Series – Pro RYS Team Hohenberg 9 2 0 1 4 112.5 2nd
British GT Championship – GT4 1 0 0 0 0 0 NC†
2017 GT4 European Series Northern Cup – Silver RYS Team InterNetX 10 0 0 1 1 66 12th
RYS Team True Racing 2 0 0 0 0
2018 Blancpain GT Series Endurance Cup Reiter Young Stars 4 0 0 0 0 0 NC
Blancpain GT Series Endurance Cup – Silver 0 0 0 1 36 11th
GT4 Central European Cup – Pro-Am K Racing - Reiter 2 1 0 1 1 70 7th
True Racing - Reiter 2 1 0 1 1
GT4 European Series – Silver Felbermayr - Reiter 2 0 0 0 1 0 NC†
2019 GT4 European Series – Silver Valvoline - True Racing 12 0 1 1 1 30 12th
ADAC GT4 Germany Felbermayr - Reiter 12 2 2 2 4 149 1st
2020 GT4 America SprintX – Silver Marco Polo Motorsports 14 3 5 4 7 186 4th
ADAC GT4 Germany Dörr Motorsport 2 0 0 0 0 0 NC†
2021 GT4 America Series – Silver Marco Polo Motorsports 6 0 0 1 1 67 8th
24H GT Series – GTX Reiter Engineering 4 3 0 0 4 81 2nd
Nürburgring Langstrecken-Serie – Cup X Teichmann Racing GT4 2 0 0 0 1 0 NC
Stadium Super Trucks N/A 2 0 1 0 0 19 20th
2022 Le Mans Cup – LMP3 Reiter Engineering 7 1 2 0 3 73 2nd
Prototype Cup Germany 2 1 0 0 2 41 11th
Nürburgring Langstrecken-Serie – SPX True Racing 3 0 0 0 0 0 NC
24 Hours of Nürburgring – SPX KTM True Racing 1 0 0 0 0 N/a DNF
2025 GT4 America Series – Silver Marco Polo Motorsports 9 0 1 0 2 77 9th
2026 GT World Challenge America – Pro-Am Chicago Performance and Tuning Co. 1 0 0 0 0 4* 8th*
Sources:[36][35]

† As Siljehaug was a guest driver, he was ineligible to score points.

Complete GT4 European Series results

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

Year Team Car Class 1 2 3 4 5 6 7 8 9 10 11 12 Pos Points
2016 RYS Team Hohenberg KTM X-Bow GT4 Pro MNZ
1
EX		 MNZ
2
Ret		 PAU
1
3		 PAU
2
Ret		 SIL
 SPA
2		 HUN
1
4		 HUN
2
8		 ZAN
1
1		 ZAN
2
3		 2nd 112.5
2017 RYS Team InterNetX KTM X-Bow GT4 Silver MIS
1
17		 MIS
2
DSQ		 RBR
1
6		 RBR
2
14		 SVK
1
DSQ		 SVK
2
Ret		 ZAN
1
2		 ZAN
2
30		 NÜR
1
5		 NÜR
2
7		 12th 66
RYS Team True Racing BRH
1
14		 BRH
2
7
2018 Felbermayr - Reiter KTM X-Bow GT4 Silver ZOL
1
 ZOL
2
 BRH
1
 BRH
2
 MIS
1
 MIS
2
 SPA
1
 SPA
2
 HUN
1
4		 HUN
2
3		 NÜR
1
 NÜR
2
 NC† 0†
2019 Valvoline - True Racing KTM X-Bow GT4 Silver MNZ
1
Ret		 MNZ
2
Ret		 BRH
1
23		 BRH
2
18		 LEC
1
31		 LEC
2
Ret		 MIS
1
15		 MIS
2
Ret		 ZAN
1
3		 ZAN
2
Ret		 NÜR
1
11		 NÜR
2
5		 12th 30

Complete GT World Challenge Europe results

GT World Challenge Europe Endurance Cup

Year Team Car Class 1 2 3 4 5 6 7 Pos. Points
2018 Reiter Young Stars Lamborghini Gallardo R-EX Silver MNZ
16		 SIL
23		 LEC
Ret		 SPA
6H		 SPA
12H		 SPA
24H		 CAT
36		 11th 36

Complete ADAC GT4 Germany results

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

Year Team Car 1 2 3 4 5 6 7 8 9 10 11 12 DC Points
2019 Felbermayr - Reiter KTM X-Bow GT4 OSC
1
5		 OSC
2
2		 RBR
1
8		 RBR
2
Ret		 ZAN
1
2		 ZAN
2
1		 NÜR
1
10		 NÜR
2
9		 HOC
1
5		 HOC
2
11		 SAC
1
1		 SAC
2
7		 1st 149
2020 Dörr Motorsport McLaren 570S GT4 NÜR
1
 NÜR
2
 HOC
1
 HOC
2
 SAC
1
 SAC
2
 RBR
1
6		 RBR
2
4		 LAU
1
 LAU
2
 OSC
1
 OSC
2
 NC† 0†

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
2022 Reiter Engineering LMP3 Ligier JS P320 LEC
11		 IMO
16		 LMS
1
5		 LMS
2
2		 MNZ
6		 SPA
2		 ALG
1		 2nd 73

References

  1. ↑ "Rafflande NM-final i Formula Basic". formulabasic.com (in Norwegian). Retrieved 1 May 2026.
  2. ↑ "Premieutdelning vid Bilsportgalan i Gardemoen". formulabasic.com (in Norwegian). Retrieved 1 May 2026.
  3. ↑ Goodwin, Graham (27 April 2016). "Monza, Weekend Report, Maseratis On Top". dailysportscar.com. Retrieved 1 May 2026.
  4. ↑ Goodwin, Graham (10 October 2016). "Wins For Racing Team Holland & Reiter In Zandvoort Finale". dailysportscar.com. Retrieved 1 May 2026.
  5. ↑ Kilshaw, Jake (30 March 2017). "Sandberg Amongst Reiter Young Stars Drivers". sportscar365.com. Retrieved 1 May 2026.
  6. ↑ Kilbey, Stephen (21 August 2017). "Ebor GT Sweeps Zandvoort Weekend". dailysportscar.com. Retrieved 1 May 2026.
  7. ↑ "Mads Siljehaug et Lenny Marioneck gagnent un volant en GT3 en 2018". endurance-info.com (in French). 17 September 2017. Retrieved 1 May 2026.
  8. ↑ Lassaux, Jean-Baptiste (1 July 2018). "GT4 Central European Cup – Marylin Niederhauser fends off Gosia Rdest in Nürburgring showdown". sport-auto.ch. Retrieved 1 May 2026.
  9. ↑ Plümer, Jonas (8 April 2019). "Das Starterfeld in der ADAC GT4 Germany 2019". gt-place.com (in German). Retrieved 1 May 2026.
  10. ↑ Goodwin, Graham (15 July 2019). "Phoenix Audi & MDM BMW Take Zandvoort GT4 Wins". dailysportscar.com. Retrieved 1 May 2026.
  11. ↑ Lassaux, Jean-Baptiste (11 August 2019). "Siljehaug/Angermayr stürmen zum Sieg im Sonntagsrennen der ADAC GT4 Germany in Zandvoort". sport-auto.ch (in German). Retrieved 1 May 2026.
  12. ↑ Müller, Martina (2 October 2019). "Champions 2019: Das erfolgreiche KTM-Duo im Porträt". speedweek.com (in German). Retrieved 1 May 2026.
  13. ↑ Dagys, John (6 February 2020). "Marco Polo Returns, Moves to GT4 SprintX with Siljehaug". sportscar365.com. Retrieved 1 May 2026.
  14. ↑ Dagys, John (8 August 2020). "MarcoPolo Breaks Through; Cooper Wins Again in Somoma". sportscar365.com. Retrieved 1 May 2026.
  15. ↑ Dagys, John (30 August 2020). "Cooper Wins Again; MarcoPolo Dominant in SprintX". sportscar365.com. Retrieved 1 May 2026.
  16. ↑ Plümer, Jonas (9 October 2020). "ADAC GT4 Germany: Mads Siljehaug kehrt zurück". gt-place.com (in German). Retrieved 1 May 2026.
  17. ↑ "Die legendären Felbermayr-Farben kehren 2021 mit einem KTM X-Bow GTX zurück". motor-freizeit-trends.at (in German). 23 March 2021. Retrieved 1 May 2026.
  18. ↑ "Herberth Motorsport siegt in dramatischen Hankook 12H Mugello". motorsport-life.com (in German). 28 March 2021. Retrieved 1 May 2026.
  19. ↑ "Herberth Motorsport feiert dritten Sieg in Le Castellet". gt-place.com (in German). 25 April 2021. Retrieved 1 May 2026.
  20. ↑ "Die Erfolgsbilanz des KTM X-Bow in der Saison 2021". motorline.cc (in German). 22 December 2021. Retrieved 1 May 2026.
  21. ↑ Dagys, John (30 April 2021). "Marco Polo Commits to Full Season With KTM X-Bow GT4 Evo". sportscar365.com. Retrieved 1 May 2026.
  22. ↑ Allaway, Phil (7 March 2021). "NOLAsport Scores Pirelli GT4 America SprintX Weekend Sweep In Sonoma". frontstretch.com. Retrieved 1 May 2026.
  23. ↑ Nguyen, Justin (12 September 2021). "Mads Siljehaug making SST debut at Long Beach". thecheckeredflag.co.uk. Retrieved 1 May 2026.
  24. ↑ "42 engagés à l'année en Michelin Le Mans Cup !". endurance-info.com (in French). 15 March 2022. Retrieved 30 April 2026.
  25. ↑ Goodwin, Graham (17 October 2022). "Reiter Ligier Wins After Early Race Mayhem, #51 Ferrari Wins In GT3, #55 GMB Honda Takes The Title". dailysportscar.com. Retrieved 30 April 2026.
  26. ↑ Goodwin, Graham (13 June 2022). "Cool Racing & GMB Motorsport Take The Win On Race Morning At Le Mans". dailysportscar.com. Retrieved 30 April 2026.
  27. ↑ "Les deux équipages KTM chez True Racing bouclés". endurance-info.com (in French). 25 March 2022. Retrieved 30 April 2026.
  28. ↑ "Mads Siljehaug shows the best time in Extreme Time Attack". gatebil.no. Retrieved 30 April 2026.
  29. ↑ "Mads Siljehaug takes the victory in Race #5". gatebil.no. Retrieved 30 April 2026.
  30. ↑ Dagys, John (6 November 2024). "Marco Polo to Make Series Return With Toyota Supra GT4". sportscar365.com. Retrieved 30 April 2026.
  31. ↑ O'Connell, RJ (17 August 2025). "Ortmann Flies Solo To Road America Victory". dailysportscar.com. Retrieved 30 April 2026.
  32. ↑ Allaway, Phil (6 September 2025). "ACI Motorsports Wins Barber Park GT4 America Race No. 2". frontstretch.com. Retrieved 30 April 2026.
  33. ↑ Dagys, John (29 March 2025). "Siljehaug, Leist Score Sonoma GT4 Pole Honors". sportscar365.com. Retrieved 30 April 2026.
  34. ↑ O'Connell, RJ (10 February 2026). "Chicago Performance Steps Up To GT World America With Lamborghini". dailysportscar.com. Retrieved 30 April 2026.
  35. 1 2 "Mads Emil Siljehaug | Racing career profile | Driver Database". www.driverdb.com. Retrieved 7 April 2026.
  36. ↑ "Mads Siljehaug Results". motorsportstats.com. Retrieved 7 April 2026.
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