| 24.1.2021 | GT4 South Algarve | 10 | X-Bow GT4 | Hendrik Still | Teichmann Racing | 2nd/3rd/DNS |
| 24.1.2021 | GT4 South Algarve | 666 | X-Bow GT4 | Assfalg / Ziegler | Laptime Performance | 12th/14th/19th |
| 24.1.2021 | GT4 South Algarve | 930 | X-Bow GT4 | Georg Griesemann | Teichmann Racing | 5th/6th/DNS |
| 7.3.2021 | GT4 America Sonoma | 71 | X-Bow GT4 | Elghanayan / Siljehaug | Marco Polo Motorsports | 9th/6th |
| 27.3.2021 | 12 h Mugello | 724 | X-BOW GTX (X26) | Angermayr / Elghanayan / Felbermayr, Jr. / Siljehaug | Reiter Engineering | 10th |
| 18.4.2021 | GT2 Euro Monza | 7 | X-Bow GT2 | Ulrich / Spescha | Sportec Motorsport | 7th/6th |
| 18.4.2021 | GT2 Euro Monza | 16 | X-Bow GT2 | Sarmini / Rosina | True Racing by Reiter Engineering | 4th/5th |
| 18.4.2021 | GT2 Euro Monza | 17 | X-Bow GT2 | Angerhofer / Trunkenpolz | True Racing by Reiter Engineering | 8th/8th |
| 18.4.2021 | GT2 Euro Monza | 23 | X-Bow GT2 | Kox / Atzberger | True Racing by Reiter Engineering | DNS |
| 18.4.2021 | GT2 Euro Monza | 24 | X-Bow GT2 | Stuck / Rosenberger | True Racing by Reiter Engineering | DNF/7th |
| 24.4.2021 | 12 h Paul Ricard | 724 | X-BOW GTX | Angermayr / Elghanayan / Felbermayr, Jr. / Siljehaug | Reiter Engineering | 5th |
| 2.5.2021 | GT4 America Austin | 71 | X-Bow GT4 | Elghanayan / Siljehaug | Marco Polo Motorsports | 19th/9th |
| 15.5.2021 | GT2 Euro Hockenheim | 7 | X-Bow GT2 | Ulrich / Lenz | Sportec Motorsport | 9th/4th |
| 15.5.2021 | GT2 Euro Hockenheim | 16 | X-Bow GT2 | Sarmini / Rosina | True Racing by Reiter Engineering | DNF/DNS |
| 15.5.2021 | GT2 Euro Hockenheim | 17 | X-Bow GT2 | Angerhofer / Trunkenpolz | True Racing by Reiter Engineering | 10th/8th |
| 15.5.2021 | GT2 Euro Hockenheim | 23 | X-Bow GT2 | Kox / Atzberger | True Racing by Reiter Engineering | 2nd/10th |
| 15.5.2021 | GT2 Euro Hockenheim | 24 | X-Bow GT2 | Stuck / Rosenberger | True Racing by Reiter Engineering | 8th/5th |
| 16.5.2021 | ADAC GT4 Oschersleben | 14 | X-Bow GT4 | Pichler / Wassertheurer | Razoon - more than Racing | 7th/12th |
| 23.5.2021 | 12 h Hockenheim | 724 | X-BOW GTX | Felbermayr, Jr. / Angermayr / Elghanayan / Siljehaug | Reiter Engineering | 19th |
| 23.5.2021 | 12 h Hockenheim | 725 | X-BOW GTX | Pronk / Kox / Retera | Reiter Engineering | DNF |
| 6.6.2021 | 24 h Nürburgring | 60 | X-Bow GT4 | Brodmerkel / Teichmann / Kara / Kraihamer | Teichmann Racing | 75th |
| 6.6.2021 | GT4 America Virginia | 71 | X-Bow GT4 | Elghanayan / Siljehaug | Marco Polo Motorsports | 14th/22nd |
| 6.6.2021 | 24 h Nürburgring | 75 | X-Bow GTX | Menzel / Schrick / Dralle / Oestreich | auto motor und sport TRUE RACING | 72nd |
| 6.6.2021 | 24 h Nürburgring | 110 | X-Bow GT4 | Bohr / Mölig / von der Laden / Adorf | Teichmann Racing | 69th |
| 6.6.2021 | 24 h Nürburgring | 111 | X-Bow GT4 | Griesemann / Rönnefarth / Volte / Sandtler | Teichmann Racing | 47th |
| 6.6.2021 | 24 h Nürburgring | 112 | X-Bow GTX | Trebing / Schöll / Soucek / Terting | Teichmann Racing | 55th |
| 6.6.2021 | 24 h Nürburgring | 114 | X-Bow GTX | Kofler / Stuck / Stuck | True Racing | 21st |
| 6.6.2021 | 24 h Nürburgring | 115 | X-Bow GTX | Schmidtmann / Hammel / Breuer / Heinemann | | 23rd |
| 13.6.2021 | ADAC GT4 Red Bull Ring | 14 | X-Bow GT4 | Pichler / Wassertheurer | Razoon - more than Racing | 14th/11th |
| 20.6.2021 | DTM Trophy Monza | 24 | X-Bow GT4 | Reinhard Kofler | RMN Racing | 12th/10th |
| 20.6.2021 | DTM Trophy Monza | 25 | X-Bow GT4 | Laura Kraihamer | True Racing by Reiter Engineering | 15th/15th |
| 4.7.2021 | GT2 Euro Misano | 7 | X-Bow GT2 | Ulrich / Spescha | Sportec Motorsport | 5th/5th |
| 4.7.2021 | GT2 Euro Misano | 16 | X-Bow GT2 | Sarmini / Rosina | True Racing by Reiter Engineering | DNF/3rd |
| 4.7.2021 | GT2 Euro Misano | 17 | X-Bow GT2 | Angerhofer / Trunkenpolz | True Racing by Reiter Engineering | 7th/9th |
| 4.7.2021 | GT2 Euro Misano | 23 | X-Bow GT2 | Thorsen / Kox | True Racing by Reiter Engineering | DNF/DNF |
| 4.7.2021 | GT2 Euro Misano | 24 | X-Bow GT2 | Stuck / Rosenberger | True Racing by Reiter Engineering | 6th/7th |