| 1.6.2003 | 24 h Nürburgring | 42 | M3 E46 GTR | Stuck / Said / Duez / Nielsen | BMW Motorsport | DNF |
| 1.6.2003 | 24 h Nürburgring | 43 | M3 E46 GTR | Müller / Müller / Duez / Hürtgen | BMW Motorsport | DNF |
| 1.6.2003 | 24 h Nürburgring | 51 | Z3 M Coupé | Schubert / Engstler / Hennerici / Horak | | 68th |
| 1.6.2003 | 24 h Nürburgring | 52 | M3 E36 | Moore / Cox / Barrow | | 9th |
| 1.6.2003 | 24 h Nürburgring | 53 | M3 E46 | Wolfsgruber / Gehring / Kiesch / E.-Schnür | Rheydter Club für Motorsport | 13th |
| 1.6.2003 | 24 h Nürburgring | 63 | M3 E36 | Lloyd / Bolz / Seher / Weber | | 39th |
| 1.6.2003 | 24 h Nürburgring | 64 | M3 E46 | Adams / Fries / Wenger / Riess | | 8th |
| 1.6.2003 | 24 h Nürburgring | 69 | M3 E36 | Brooks / Wilson / Mountain | | DNF |
| 1.6.2003 | 24 h Nürburgring | 102 | M3 E30 | Karl / Wehner / Bauer | Soda-Club-Team | 15th |
| 1.6.2003 | 24 h Nürburgring | 121 | 318 is E30 | Oesterbeck / Mölleken / Leiendecker / Heidemann | AC Oberhausen e.V. im ADAC | 97th |
| 1.6.2003 | 24 h Nürburgring | 125 | 318 is E30 | Förster / Schneck / Bauer / Brinker | Soda-Club-Team | 128th |
| 1.6.2003 | 24 h Nürburgring | 133 | 320i E46 | Burgmann / Burgmann / Winkelmann / Brunnacker | MSC Ruhrblitz Bochum e.V. im ADAC | 46th |
| 1.6.2003 | 24 h Nürburgring | 140 | 320i E46 | Molenaar / Coronel / Huisman / Schubert | Serra Roig | DNF |
| 1.6.2003 | 24 h Nürburgring | 165 | 318 ti Compact | Wolff / Hirsch / Meier / Leube | Saale GoKart Motorsport | 43rd |
| 1.6.2003 | 24 h Nürburgring | 166 | 318 is E36 Coupe | Meier / Leube / Buckingham / Ahlden | Saale GoKart Motorsport | 93rd |
| 1.6.2003 | 24 h Nürburgring | 167 | 318 is E36 | Surauer / Werker / Weimer / Haid | MSC Rhön e.V. im AvD | 54th |
| 1.6.2003 | 24 h Nürburgring | 168 | 318 is E36 | Bachiorri / Chiminelli / Nett / Fürderer | MSC Rhön e.V. im AvD | DNF |
| 1.6.2003 | 24 h Nürburgring | 169 | 318 is E36 | Rehfisch / Breunig / Kautz / Mundorf | | 103rd |
| 1.6.2003 | 24 h Nürburgring | 171 | 318 is E36 | Silvester / Moritz / Schild / Dill | | 82nd |
| 1.6.2003 | 24 h Nürburgring | 172 | 318 is E36 | Derscheid / Schlehecker / Schwarz / Wüst | MSC Wahlscheid e.V. im ADAC | 44th |
| 1.6.2003 | 24 h Nürburgring | 173 | 318 ti Compact | Buschmans / Keller / Thiel / Tschornia | | 40th |
| 1.6.2003 | 24 h Nürburgring | 174 | 318 ti Compact | Möller / Schula / Schneider / Kruse | | DNF |
| 1.6.2003 | 24 h Nürburgring | 187 | M3 E30 | Timperanza / Naues / Dodd / Scholze | | 144th |
| 1.6.2003 | 24 h Nürburgring | 189 | M3 E30 | Salzer / Salzer | DSK "Ja zum Motorsport" | 65th |
| 1.6.2003 | 24 h Nürburgring | 190 | 325i E46 | Delzepich / Pobbig / Karp / Mertens | | 129th |
| 1.6.2003 | 24 h Nürburgring | 192 | M3 E30 | Lobe / Frey / Moufang / Frey | | 76th |
| 1.6.2003 | 24 h Nürburgring | 194 | 325i E36 | Dick / Wyatt / Cribbin / Bomhoff | | DNF |
| 1.6.2003 | 24 h Nürburgring | 197 | M3 E30 | Hancke / Peter / Truelove / Krumbach | DMC Dürener Motorsportclub | 35th |
| 1.6.2003 | 24 h Nürburgring | 198 | M3 E30 | Böhm / Mundorf / Haack / Ehleiter | Dolate Motorsport | 23rd |
| 1.6.2003 | 24 h Nürburgring | 199 | M3 E36 | Scalini / Saccomanno / Corolli / Grimoldi | MSC Rhön e.V. im AvD | 94th |
| 1.6.2003 | 24 h Nürburgring | 200 | M3 E36 | Shaw / Miller / Warwick | Matador Deutschland GmbH | 122nd |
| 1.6.2003 | 24 h Nürburgring | 231 | 325i E36 | Küpper / Crawford / Hofmann / Lenden | | 111th |
| 1.6.2003 | 24 h Nürburgring | 233 | M3 E36 | Simoncini / Cairati / Cairati | | DNF |
| 1.6.2003 | 24 h Nürburgring | 234 | M3 E36 | Schild / Werner / Raab / Schlüter | | 36th |
| 1.6.2003 | 24 h Nürburgring | 241 | 330d E46 | Lindlar / Haider / Kutsch / Hiltscher | Renngemeinschaft Bergisch-Gladbach e.V. im ADAC | 102nd |
| 1.6.2003 | 24 h Nürburgring | 244 | 330d E46 | Radulovic / Mies / Horn / Schittenhelm | | 74th |
| 1.6.2003 | 24 h Nürburgring | 246 | 320d E46 | Nemecek / Schachinger / Walkolbinger | PSV Linz | DNF |
| 1.6.2003 | 24 h Nürburgring | 251 | 320d E46 | Haezebrouck / Depoix / Frings | Duller Motorsport | 37th |
| 1.6.2003 | 24 h Nürburgring | 254 | 320d E46 | Meyersrenken / Hoffeld / Passyutu / Wagner | | DNF |
| 8.6.2003 | 400 km Fontana | 09 | M3 | Russell | Automatic Racing | 20th |
| 8.6.2003 | 400 km Fontana | 5 | M3 E46 GT | Boris Said | Bell Motorsports | DNA |
| 8.6.2003 | Belcar Spa SER | 15 | Z3 M Coupé GT | Döring / Virtanen | JMT Racing | DNA |
| 8.6.2003 | Belcar Spa SER | 16 | Z3 M Coupé GT | Daems / Van Woensel | LVC Motorsport | 19th |
| 8.6.2003 | Belcar Spa SER | 51 | E36 | Theuws / Derdaele | Belgium Racing | DNF |
| 8.6.2003 | Belcar Spa SER | 52 | M3 E46 GTR | Beliën / Jakobs / Cuyvers | Beliën Racing | 17th |
| 8.6.2003 | Belcar Spa SER | 53 | M3 E46 GTR | Carlier / Pasteels / Pauwels | Carlier Racing | 27th |
| 8.6.2003 | Belcar Spa SER | 54 | E36 | Verpoort / Dentant | Ostend Racing | DNA |
| 8.6.2003 | Belcar Spa SER | 55 | E46 | Van de Velde / Jamers / Van de Velde | Daikin Racing Team | 28th |
| 8.6.2003 | Belcar Spa SER | 56 | M3 E46 GTR | Meijers / Meijers / Broekmans | Meijers Motorsport | 35th |
| 8.6.2003 | Belcar Spa SER | 57 | M3 E36 GTR | Severich / Kenis | G&A Racing | 22nd |
| 8.6.2003 | Belcar Spa SER | 59 | M3 E36 | Aerts / Lippens / Moonens | KS-Motorsport | 36th |
| 8.6.2003 | Belcar Spa SER | 60 | 330i E46 | Frans / Winnepennings | Raceprojects | DNA |
| 8.6.2003 | 400 km Fontana | 69 | M3 E36 | Cunningham / Plumb | Marcus Motorsports | 14th |
| 8.6.2003 | Belcar Spa SER | 72 | 320i E36 STW | van Bellingen / Leyssens | KS-Motorsport | 11th |
| 8.6.2003 | Belcar Spa SER | 73 | M3 E36 | Moore / Cox | Moore Int. Motorsport | DNA |
| 8.6.2003 | Belcar Spa SER | 74 | M3 E36 GTR | De Keersmaecker / Van Delm | G&A Racing | DNF |
| 8.6.2003 | Belcar Spa SER | 75 | M3 E36 | Van Cleemputte / Gabriël / Aerts | MVC Racing Team | 23rd |
| 8.6.2003 | Belcar Spa SER | 76 | E36 | Verhoeven / De Coster | Belgium Racing | 20th |
| 8.6.2003 | Belcar Spa SER | 77 | M3 E36 | Beckers / Cassiers | MSE Racing | 14th |
| 8.6.2003 | 400 km Fontana | 90 | M3 | van Cleef | Automatic Racing | 21st |
| 9.6.2003 | SM GTR Gellerasen | 7 | M1 GTR | Stefan Pettersson | Steber Racing | 4th/DQ |
| 9.6.2003 | FFSA GT Pau [Coupe] | 92 | Z3 M Coupé | Baron / Cordel | Emeraude Racing | 22nd |
| 22.6.2003 | 6 h Watkins Glen | 5 | M3 E46 GT | Boris Said | Bell Motorsports | DNA |
| 22.6.2003 | 6 h Watkins Glen | 69 | M3 E36 | Cunningham / Plumb / Vannelet | Marcus Motorsports | 6th |
| 28.6.2003 | 400 km Mid-Ohio | 5 | M3 E46 GT | Boris Said | Bell Motorsports | DNA |
| 28.6.2003 | 400 km Mid-Ohio | 69 | M3 E36 | Plumb / Cunningham | Marcus Motorsports | 8th |
| 3.7.2003 | 250 mile Daytona | 09 | M3 | Dave Russell | Automatic Racing | 24th |
| 3.7.2003 | 250 mile Daytona | 5 | M3 E46 GT | Boris Said | Bell Motorsports | DNA |
| 3.7.2003 | 250 mile Daytona | 69 | M3 E36 | Cunningham / Plumb | Marcus Motorsports | 6th |
| 3.7.2003 | 250 mile Daytona | 92 | M3 E36 | Mauney / Braswell / Russell | RTR Motorsports | DNA |
| 3.7.2003 | 250 mile Daytona | 93 | M3 | Mauney / Braswell | RTR Motorsportz | 19th |
| 13.7.2003 | JGTC Fuji | 15 | M3 E46 GT | Hashimoto / Kwan | Amprex Motorsport | 26th |
| 13.7.2003 | JGTC Fuji | 21 | M3 E46 GT | Hitotsuyama / Matsumoto | Hitotsuyama Racing | DNQ |
| 27.7.2003 | 24 h Spa | 115 | Z3 M Coupé | Linnertz / Janssen / Naveaux / Bouche | JMT Racing | DNF |
| 3.8.2003 | Special GT Cup Fuji | 15 | M3 E46 GT | Hashimoto / Kwan | Amprex Motorsport | DNF |
| 3.8.2003 | Special GT Cup Fuji | 21 | M3 E46 GT | Hitotsuyama / Matsumoto | Hitotsuyama Racing | DNQ |
| 8.8.2003 | 250 mile Watkins Glen | 5 | M3 E46 GT | Boris Said | Bell Motorsports | DNA |
| 8.8.2003 | 250 mile Watkins Glen | 69 | M3 E36 | Cunningham / Plumb | Marcus Motorsports | 17th |
| 17.8.2003 | SM GTR Gellerasen | 7 | M1 GTR | Stefan Pettersson | Steber Racing | 3rd/2nd |
| 24.8.2003 | 24 h Zolder | 15 | Compact | de Hoen / Houbben / de Temmerman / Essers | Brother Racing | DNF |
| 24.8.2003 | 24 h Zolder | 16 | Z3 M Coupé GT | Van Woensel / Van Vaerenbergh / Groes / Van Bavel | LVC Motorsport | DNF |
| 24.8.2003 | 24 h Zolder | 51 | E36 | Theuws / Derdaele / van Hooydonk / Empsen | Belgium Racing | 15th |
| 24.8.2003 | 24 h Zolder | 52 | M3 E46 GTR | Beliën / Jakobs / Van Elderen / Leinders | Beliën Racing | 8th |
| 24.8.2003 | 24 h Zolder | 53 | M3 E46 GTR | Carlier / Pasteels / Pauwels / Heeren | Carlier Racing | 23rd |
| 24.8.2003 | 24 h Zolder | 55 | E46 | Van de Velde / Jamers / Van de Velde / Boden | Daikin Racing Team | DNF |
| 24.8.2003 | 24 h Zolder | 56 | M3 E46 GTR | Meijers / Meijers / Broekmans | Meijers Motorsport | 25th |
| 24.8.2003 | 24 h Zolder | 58 | M3 E36 | Jeuris / Werckx / van Gorp | EL Racing | 17th |
| 24.8.2003 | 24 h Zolder | 60 | 330i E46 | Frans / Herbots / Svensson / Moury | Raceprojects | DNF |
| 24.8.2003 | Euro GT Spa | 61 | M3 E36 | van Os / van Os | van Os | 6th/7th |
| 24.8.2003 | Euro GT Spa | 65 | E46 GTR | Braspenning / Vels | Team Braspenning Motorsport | - |
| 24.8.2003 | Euro GT Spa | 66 | Z3 | Schoep / Schoep | Team Braspenning Motorsport | - |
| 24.8.2003 | 24 h Zolder | 66 | M3 GTR | Huisman / van Es / Crevels | Hasdev | DNF |
| 24.8.2003 | 24 h Zolder | 72 | 320i E36 STW | van Bellingen / Leyssens / Vandermaesen | KS-Motorsport | DNF |
| 24.8.2003 | 24 h Zolder | 73 | M3 E36 | Moore / Cox / Redhouse | Moore Int. Motorsport | 9th |
| 24.8.2003 | 24 h Zolder | 74 | M3 E36 GTR | De Keersmaecker / Van Delm / Smets | G&A Racing | 13th |
| 24.8.2003 | 24 h Zolder | 75 | M3 E36 | Gabriël / Janssens / Aerts / Cracco | MVC Racing Team | 20th |
| 24.8.2003 | 24 h Zolder | 76 | E36 | Verhoeven / De Coster / Colman / Geoffroy | Belgium Racing | DNF |
| 24.8.2003 | 24 h Zolder | 77 | M3 E36 | Beckers / Cassiers / van Samang / Raes | MSE Racing | DNF |
| 24.8.2003 | Euro GT Spa | 103 | E46 Compact | Albronda / van Os | Henk Albronda | 8th/8th |
| 24.8.2003 | Euro GT Spa | 104 | 325i E46 | Patrick Snel | Patrick Snel | 10th/9th |