| 24.1.2021 | GT4 South Algarve | 11 | | Klüber / Heyer | Equipe Vitesse | 24th/5th/2nd |
| 24.1.2021 | 100 min Daytona | 28 | | Morad / de Quesada | Alegra Motorsports | 40th |
| 24.1.2021 | 100 min Daytona | 57 | | Ward / Ellis | Winward Racing | 28th |
| 24.1.2021 | 100 min Daytona | 75 | | Habul / Marciello | SunEnergy1 Racing | 36th |
| 31.1.2021 | 24 h Daytona | 28 | | Morad / Skeen / Johnson / Buhk | Alegra Motorsports | 30th |
| 31.1.2021 | 24 h Daytona | 57 | | Ward / Ellis / Dontje / Engel | Winward Racing | 22nd |
| 31.1.2021 | 24 h Daytona | 75 | | Habul / Marciello / Grenier / Stolz | SunEnergy1 Racing | 23rd |
| 7.3.2021 | SRO GT America Sonoma | 04 | | Kurtz / Braun | DXDT Racing | 6th/3rd |
| 7.3.2021 | GT America Sonoma | 04 | #AMG GT3 190 20 266 | George Kurtz | DXDT Racing | 1st/1st |
| 7.3.2021 | SRO GT America Sonoma | 19 | | Vogel / Cooper | DXDT Racing | 7th/6th |
| 7.3.2021 | SRO GT America Sonoma | 33 | | Ward / Ellis | Winward Racing | DNF/7th |
| 7.3.2021 | GT America Sonoma | 58 | | C. J. Moses | DXDT Racing | unused |
| 7.3.2021 | SRO GT America Sonoma | 63 | | Askew / Dalziel | DXDT Racing | 4th/11th |
| 14.3.2021 | Australian GT Phillip Island | 888 | | Ibrahim / Whincup | Triple Eight Race Engineering - JMR | 2nd/3rd |
| 20.3.2021 | 12 h Sebring | 28 | | Morad / de Quesada / Johnson | Alegra Motorsports | 33rd |
| 20.3.2021 | 12 h Sebring | 75 | | Habul / Engel / Grenier | SunEnergy1 Racing | 26th |
| 26.3.2021 | SRO Test Paul Ricard | 20 | | Pierburg / Scholze / Baumann | SPS Automotive Performance | 18th |
| 26.3.2021 | SRO Test Paul Ricard | 40 | | Born / Love / Mettler | SPS Automotive Performance | 17th |
| 26.3.2021 | SRO Test Paul Ricard | 87 | #AMG GT3 190 20 280 | Tereschenko / Umbrarescu / Drouet / Gachet | AKKA ASP Team | 6th |
| 26.3.2021 | SRO Test Paul Ricard | 90 | | Pérez Companc / Hofer / Breukers | Madpanda Motorsport | 28th |
| 4.4.2021 | Australian GT Bathurst | 888 | | Ibrahim / Van Gisbergen | Triple Eight Race Engineering - JMR | 1st/2nd |
| 11.4.2021 | 300 km Okayama | 4 | #AMG GT3 190 20 258 | Taniguchi / Kataoka | Goodsmile Racing & Team Ukyo | 28th |
| 11.4.2021 | 300 km Okayama | 22 | | Wada / Jounai | R'Qs Motor Sports | 34th |
| 11.4.2021 | 300 km Okayama | 50 | | Kano / Yanagida | Arnage Racing | 32nd |
| 18.4.2021 | 3 h Monza | 20 | | Baumann / Pierburg | SPS Automotive Performance | 28th |
| 18.4.2021 | 3 h Monza | 40 | | Mettler / Love / Born | SPS Automotive Performance | 18th |
| 18.4.2021 | 3 h Monza | 57 | | Ward / Grenier / Ellis | Winward Racing | 7th |
| 18.4.2021 | 3 h Monza | 87 | #AMG GT3 190 20 280 | Gachet / Tereschenko / Drouet | AKKA ASP | 11th |
| 18.4.2021 | 3 h Monza | 90 | | Pérez Companc / Breukers | Madpanda Motorsport | DNF |
| 2.5.2021 | GT America Austin | 04 | #AMG GT3 190 20 266 | George Kurtz | DXDT Racing | T-car |
| 2.5.2021 | SRO GT America Austin | 04 | #AMG GT3 190 20 266 | Kurtz / Braun | DXDT Racing | 9th/4th |
| 2.5.2021 | GT America Austin | 04T | #AMG GT3 190 18 194 | George Kurtz | DXDT Racing | DNF/4th |
| 2.5.2021 | SRO GT America Austin | 19 | | Vogel / Cooper | DXDT Racing | 14th/DNF |
| 2.5.2021 | SRO GT America Austin | 33 | | Ward / Ellis | Winward Racing | 2nd/3rd |
| 2.5.2021 | GT America Austin | 58 | | C. J. Moses | DXDT Racing | DNS/9th |
| 2.5.2021 | SRO GT America Austin | 63 | | Askew / Dalziel | DXDT Racing | 10th/8th |
| 2.5.2021 | Italian GT Monza | 90 | | Segù / Baruch | AKM Motorsport | DNF/1st |
| 4.5.2021 | 500 km Fuji | 4 | #AMG GT3 190 20 258 | Taniguchi / Kataoka | Goodsmile Racing & Team Ukyo | 20th |
| 4.5.2021 | 500 km Fuji | 22 | | Wada / Jounai / Yamashita | R'Qs Motor Sports | DNF |
| 4.5.2021 | 500 km Fuji | 50 | | Kano / Yanagida | Arnage Racing | 33rd |
| 9.5.2021 | SRO GT Sprint Magny-Cours | 20 | | Pierburg / Baumann | SPS Automotive Performance | 21st/17th |
| 9.5.2021 | SRO GT Sprint Magny-Cours | 87 | #AMG GT3 190 20 280 | Tereschenko / Pla | AKKA ASP | 16th/5th |
| 9.5.2021 | SRO GT Sprint Magny-Cours | 90 | | Pérez Companc / Breukers | Madpanda Motorsport | 4th/13th |
| 9.5.2021 | Australian GT The Bend | 888 | | Ibrahim / Feeney | Triple Eight Race Engineering - JMR | 6th/3rd |
| 16.5.2021 | ADAC GT Oschersleben | 13 | #AMG GT3 190 21 334 | Walilko / Gounon | Team Zakspeed Mobil Krankenkasse Racing | 15th/4th |
| 16.5.2021 | GT Open Paul Ricard | 14 | | Scholze / Liebhauser | AKM Motorsport | 11th/25th |
| 16.5.2021 | GT Open Paul Ricard | 15 | | Hirsch / Schraml | Twin Busch by Equipe Vitesse | DNF/DNS |
| 16.5.2021 | ADAC GT Oschersleben | 20 | #AMG GT3 190 21 336 | Still / Schöll | Team Zakspeed Mobil Krankenkasse Racing | 23rd/20th |
| 16.5.2021 | ADAC GT Oschersleben | 22 | | Stolz / Engel | Mercedes-AMG Team Toksport WRT | 5th/7th |
| 16.5.2021 | GT Open Paul Ricard | 47 | | Moiseev / Spinelli | AKM Motorsport | 10th/8th |
| 16.5.2021 | GT Open Paul Ricard | 48 | | Sattler / Bastian | Winward | 9th/7th |
| 16.5.2021 | ADAC GT Oschersleben | 70 | | Marciello / Buhk | Mann-Filter Team Landgraf - HTP/WWR | 1st/DNF |
| 23.5.2021 | British GT Brands Hatch | 69 | | Cottingham / de Haan | Ram Racing | DNF |
| 29.5.2021 | 1000 km Paul Ricard | 20 | | Konrad / Baumann / Pierburg | SPS Automotive Performance | 28th |
| 29.5.2021 | 1000 km Paul Ricard | 40 | | Mettler / Love / Born | SPS Automotive Performance | DNF |
| 29.5.2021 | 1000 km Paul Ricard | 57 | | Ward / Grenier / Ellis | Winward Racing | 20th |
| 29.5.2021 | 1000 km Paul Ricard | 87 | #AMG GT3 190 20 280 | Gachet / Tereschenko / Drouet | AKKA ASP | 11th |
| 29.5.2021 | 1000 km Paul Ricard | 90 | | Pérez Companc / Sanchez / Breukers | Madpanda Motorsport | 24th |
| 6.6.2021 | GT America Virginia | 04 | #AMG GT3 190 18 194 | George Kurtz | DXDT Racing | 7th/DNF |
| 6.6.2021 | SRO GT America Virginia | 04 | #AMG GT3 190 20 266 | Kurtz / Braun | DXDT Racing | 6th/DNF |
| 6.6.2021 | 24 h Nürburgring | 4 | #AMG GT3 190 22 405 | Christodoulou / Engel / Metzger / Stolz | Mercedes-AMG Team HRT | DNF |
| 6.6.2021 | 24 h Nürburgring | 6 | | Assenheimer / Bastian / Engel / Haupt | Mercedes-AMG Team HRT | DNF |
| 6.6.2021 | 24 h Nürburgring | 7 | | Götz / Juncadella / Marciello | Mercedes-AMG Team GetSpeed | 3rd |
| 6.6.2021 | 24 h Nürburgring | 8 | | Gounon / Schiller / Vaxiviere | Mercedes-AMG Team GetSpeed | 7th |
| 6.6.2021 | 24 h Nürburgring | 9 | | Shoffner / Kranz / Palttala / Soulet | GetSpeed | 14th |
| 6.6.2021 | 24 h Nürburgring | 16 | | Putman / Espenlaub / Foster / Lewis | CP Racing | 19th |
| 6.6.2021 | SRO GT America Virginia | 19 | | Vogel / Cooper | DXDT Racing | 3rd/8th |
| 6.6.2021 | SRO GT America Virginia | 33 | | Ward / Grenier | Winward Racing | 4th/1st |
| 6.6.2021 | 24 h Nürburgring | 40 | | Heyer / Jäger / Buurman / Baumann | 10Q Racing Team Hauer & Zabel GbR | 10th |
| 6.6.2021 | GT America Virginia | 58 | | C. J. Moses | DXDT Racing | 5th/4th |
| 6.6.2021 | SRO GT America Virginia | 63 | | Askew / Dalziel | DXDT Racing | DNS/9th |
| 6.6.2021 | Italian GT Misano | 90 | | Segù / Baruch | AKM Motorsport | 10th/3rd |
| 13.6.2021 | ADAC GT Red Bull Ring | 13 | #AMG GT3 190 21 334 | Walilko / Gounon | Team Zakspeed Mobil Krankenkasse Racing | 13th/8th |
| 13.6.2021 | ADAC GT Red Bull Ring | 20 | #AMG GT3 190 21 336 | Still / Schöll | Team Zakspeed Mobil Krankenkasse Racing | DNF/DNF |
| 13.6.2021 | ADAC GT Red Bull Ring | 22 | | Stolz / Engel | Mercedes-AMG Team Toksport WRT | 10th/DNF |
| 13.6.2021 | ADAC GT Red Bull Ring | 70 | | Marciello / Buhk | Mann-Filter Team Landgraf - HTP/WWR | 4th/10th |
| 20.6.2021 | DTM Monza | 4 | | Maximilian Götz | Mercedes-AMG Team HRT | 2nd/10th |
| 20.6.2021 | DTM Monza | 8 | | Daniel Juncadella | Mercedes-AMG Team Gruppe M Racing | 5th/11th |
| 20.6.2021 | DTM Monza | 18 | | Maximilian Buhk | Mercedes-AMG Team Mücke Motorsport | 6th/12th |
| 20.6.2021 | DTM Monza | 22 | | Lucas Auer | Mercedes-AMG Team Winward | 12th/3rd |