| 5.1.2003 | Daytona Test | 20 | #ZFFYR51B000119073 (000M) | Earle / Atapattu / Shearer / Manfredi | JMB Racing USA Team Ferrari | DNA |
| 5.1.2003 | Daytona Test | 21 | #ZFFYR51B000118459 (007M) | Farfus / Earle / Atapattu / Pescatori | JMB Racing USA Team Ferrari | 21st |
| 2.2.2003 | 24 h Daytona | 20 | #ZFFYR51B000118459 (007M) | Farfus / Collard / Papis / Garbagnati | JMB USA Racing | 14th |
| 2.2.2003 | 24 h Daytona | 22 | #ZFFYR51B000119073 (000M) | Earle | JMB USA Racing | 40th |
| 1.3.2003 | 250 mile Homestead | 20 | #ZFFYR51B000118459 (007M) | | JMB Racing USA | DNA |
| 1.3.2003 | 250 mile Homestead | 21 | #ZFFYR51B000119073 (000M) | | JMB Racing USA | DNA |
| 7.3.2003 | FIA GT Test Barcelona | - | #ZFFYR51B000118533 (011M) | Mullen / Davies / Burt / Turner | Team Maranello Concessionaires | 9th |
| 15.3.2003 | 12 h Sebring | 28 | #ZFFYR51B000118459 (007M) | Grégoire / Babini / Pescatori | JMB Racing USA | 15th |
| 15.3.2003 | 12 h Sebring | 29 | #ZFFYR51B000119073 (000M) | Earle / Garbagnati / Manfredi | JMB Racing USA | 27th |
| 30.3.2003 | Italian GT Imola | 52 | #ZFFYR51B000122578 (010M) | Casè / Monti | Mastercar | 7th/8th |
| 6.4.2003 | 500 km Barcelona | 53 | #ZFFYR51B000118766 (001M) | Kutemann / Gosse | JMB Racing | 20th |
| 6.4.2003 | 500 km Barcelona | 89 | #ZFFYR51B000123510 (015M) | Burt / Turner | Team Maranello Concessionaires | 10th |
| 13.4.2003 | Italian GT Mugello | 52 | #ZFFYR51B000122578 (010M) | Casè / Monti | Mastercar | DNF/DQ |
| 27.4.2003 | 500 km Magny-Cours | 53 | #ZFFYR51B000118766 (001M) | Kutemann / Gosse | JMB Racing | 18th |
| 27.4.2003 | 500 km Magny-Cours | 89 | #ZFFYR51B000123510 (015M) | Burt / Turner | Team Maranello Concessionaires | DQ |
| 4.5.2003 | Le Mans Test | 70 | #ZFFYR51B000119073 (000M) | Terrien / Babini / de Simone | JMB Racing | 43rd |
| 11.5.2003 | Italian GT Misano | 52 | #ZFFYR51B000122578 (010M) | Monti / Casè | Mastercar | 5th/12th |
| 11.5.2003 | 500 km Pergusa | 53 | #ZFFYR51B000118766 (001M) | Gosse / Kutemann | JMB Racing | 14th |
| 11.5.2003 | 500 km Pergusa | 58 | #ZFFYR51B000123037 (009M) | Hiesse / Gomez | Auto Palace Star Rent Competition | DNF |
| 11.5.2003 | 500 km Pergusa | 89 | #ZFFYR51B000123510 (015M) | Turner / Burt | Team Maranello Concessionaires | 16th |
| 18.5.2003 | Spanish GT Jarama | 16 | #ZFFYR51B000122903 (004M) | Diaz Mata / Vivancos | Darro Motor Racing | 6th/4th |
| 25.5.2003 | Italian GT Pergusa | 52 | #ZFFYR51B000122578 (010M) | Monti / Casè | Mastercar | DNA |
| 25.5.2003 | 500 km Brno | 53 | #ZFFYR51B000118766 (001M) | Kutemann / Gosse | JMB Racing | 20th |
| 25.5.2003 | 500 km Brno | 89 | #ZFFYR51B000123510 (015M) | Burt / Turner | Team Maranello Concessionaires | 19th |
| 8.6.2003 | Italian GT Monza | 52 | #ZFFYR51B000122578 (010M) | Monti / Montermini | Mastercar | 19th/3rd |
| 15.6.2003 | 24 h Le Mans | 70 | #ZFFYR51B000119081 (008M) | Terrien / Babini / de Simone | JMB Racing | 25th |
| 22.6.2003 | Italian GT Magione | 52 | #ZFFYR51B000122578 (010M) | Monti / Montermini | Mastercar SRL | 12th/DNS |
| 29.6.2003 | 2 h 45 min Road Atlanta | 28 | #ZFFYR51B000118459 (007M) | Grégoire / Salazar | JMB Racing | 22nd |
| 29.6.2003 | 500 km Donington | 53 | #ZFFYR51B000118766 (001M) | Kutemann / Gosse | JMB Racing | 17th |
| 29.6.2003 | 500 km Donington | 80 | #ZFFYR51B000118533 (011M) | Kirkaldy / Smith | Veloqx Motorsport | 15th |
| 29.6.2003 | 500 km Donington | 89 | #ZFFYR51B000123510 (015M) | Burt / Turner | Team Maranello Concessionaires | DNF |
| 8.7.2003 | FIA GT Test Spa | 52A | #ZFFYR51B000122578 (010M) | Biglieri / Biglieri / Bartoli / Bortignon / Montermini / Monti | Mastercar | 14th |
| 8.7.2003 | FIA GT Test Spa | 80 | #ZFFYR51B000118533 (011M) | Mullen / Davies / Smith | Veloqx Prodrive Racing | 13th |
| 8.7.2003 | FIA GT Test Spa | 89 | #ZFFYR51B000123510 (015M) | Burt / Kirkaldy / Turner | Team Maranello Concessionaires | 10th |
| 8.7.2003 | FIA GT Test Spa | - | #ZFFYR51B000118775 (002M) | de Simone / Garbagnati | JMB Racing | 10th |
| 13.7.2003 | Italian GT A1-Ring | 52 | #ZFFYR51B000122578 (010M) | Monti / Montermini | Mastercar S.r.l. | DNF/3rd |
| 27.7.2003 | 2 h 45 min Sonoma | 28 | #ZFFYR51B000118459 (007M) | Salazar / Grégoire | JMB Racing USA/Team Ferrari | 25th |
| 27.7.2003 | 2 h 45 min Sonoma | 29 | #ZFFYR51B000119073 (000M) | Garbagnati | JMB Racing USA/Team Ferrari | 33rd |
| 27.7.2003 | 24 h Spa | 53 | #ZFFYR51B000118775 (002M) | Alexander / de Simone / Burti | JMB Racing | 8th |
| 27.7.2003 | 24 h Spa | 68 | #ZFFYR51B000118766 (001M) | Kutemann / Earle / Gosse / Pregliasco | Peter Kutemann | DNF |
| 27.7.2003 | 24 h Spa | 76 | #ZFFYR51B000122578 (010M) | Montermini / Engelhorn / Baron / Monti / Biglieri / Biglieri / Bartoli / Bortignon | Mastercar | DNA |
| 27.7.2003 | 24 h Spa | 89 | #ZFFYR51B000123510 (015M) | Davies / Smith / Turner | Team Maranello Concessionaires | 20th |
| 3.8.2003 | 3 h Trois-Rivières | 28 | #ZFFYR51B000118459 (007M) | Pescatori / Grégoire | JMB Racing USA/Team Ferrari | 26th |
| 3.8.2003 | 3 h Trois-Rivières | 29 | #ZFFYR51B000119073 (000M) | Ludovico Manfredi | JMB Racing USA/Team Ferrari | DNA |
| 8.8.2003 | 250 mile Watkins Glen | 07 | #ZFFYR51B000118981 | Jennings / Black | Preferred Path | DNA |
| 17.8.2003 | 2 h 45 min Mosport | 28 | #ZFFYR51B000118459 (007M) | Alexander / Grégoire / Salazar | JMB Racing USA/Team Ferrari | 19th |
| 17.8.2003 | 2 h 45 min Mosport | 29 | #ZFFYR51B000119349 (003M) | Gosse / Kutemann | JMB Racing USA/Team Ferrari | 25th |
| 24.8.2003 | 2 h 45 min Road America | 28 | #ZFFYR51B000118459 (007M) | Alexander / Grégoire | JMB Racing USA/Team Ferrari | 35th |
| 24.8.2003 | 2 h 45 min Road America | 29 | #ZFFYR51B000119349 (003M) | Shearer / Kutemann | JMB Racing USA/Team Ferrari | 34th |
| 7.9.2003 | 2 h 45 min Laguna Seca | 28 | #ZFFYR51B000118459 (007M) | Alexander / Grégoire / Salazar | JMB Racing USA/Team Ferrari | 18th |
| 7.9.2003 | 2 h 45 min Laguna Seca | 29 | #ZFFYR51B000119349 (003M) | Earle / Neuhaus | JMB Racing USA/Team Ferrari | 25th |
| 7.9.2003 | 500 km Anderstorp | 53 | #ZFFYR51B000118766 (001M) | Kutemann / Gosse | JMB Racing | 18th |
| 7.9.2003 | 500 km Anderstorp | 88 | #ZFFYR51B000123510 (015M) | Turner / Davies | Team Maranello Concessionaires | 9th |
| 21.9.2003 | 500 km Oschersleben | 88 | #ZFFYR51B000123510 (015M) | Turner / Davies | Team Maranello Concessionaires | 6th |