| 5.1.2003 | Daytona Test | 29 | Mustang | Curran / Duncan | Sky Blue Racing | 5th |
| 5.1.2003 | Daytona Test | 48 | Mustang | Riggins / Machavern / Lepage / Lagasse | Heritage Motorsports | 12th |
| 26.1.2003 | Mil Milhas Brasileiras | 7 | Courier | Guerra / Guerra / Henrique / Ferreira Vasco | Unioil/Falke | 44th |
| 26.1.2003 | Mil Milhas Brasileiras | 52 | Escort | Lopes da Cruz / Sahade, Jr. | Unioil | 49th |
| 26.1.2003 | Mil Milhas Brasileiras | 97 | Escort | Borlenghi / Rezende Fo. / Ramos | IBL Logística | 39th |
| 2.2.2003 | 24 h Daytona | 29 | Mustang | Curran / Duncan / Hayner | Sky Blue Racing | DNA |
| 2.2.2003 | 24 h Daytona | 48 | Mustang | Riggins / Machavern | Heritage Motorsports | 41st |
| 1.3.2003 | 250 mile Homestead | 29 | Mustang | Curran / Duncan / Hayner | Sky Blue Racing | DNA |
| 1.3.2003 | 250 mile Homestead | 48 | Mustang | Riggins / Machavern | Heritage Motorsports | 15th |
| 13.4.2003 | Belcar Zolder NRF | 64 | Mondeo | Slaus / Defourny | SRT | 15th |
| 13.4.2003 | Belcar Zolder NRF | 92 | Mondeo | Radermecker / de Sordi | Ford Belgium | 12th |
| 27.4.2003 | Belcar Zolder WSN | 92 | Mondeo | Radermecker / de Sordi | Ford Genk/M.I. Racing | 11th |
| 3.5.2003 | 250 mile Phoenix | 14 | Mustang | Wilkins | Frederick Motorsports | 22nd |
| 3.5.2003 | 250 mile Phoenix | 30 | Mustang Cobra R | Lapcevich / Brown | Frederick Motorsports | 23rd |
| 3.5.2003 | 250 mile Phoenix | 47 | Mustang Cobra R | Smith / Kohler | TF Racing | 15th |
| 3.5.2003 | 250 mile Phoenix | 48 | Mustang | Riggins / Machavern | Heritage Motorsports | 4th |
| 3.5.2003 | 250 mile Phoenix | 53 | Mustang Cobra R | Assentato / Longhi | TF Racing/Max Q | unused |
| 11.5.2003 | Belcar Spa Belpro | 92 | Mondeo | Radermecker / de Sordi | Ford Genk/MI Racing | 10th |
| 18.5.2003 | 250 mile Barber | 48 | Mustang | Riggins / Machavern | Heritage Motorsports | 4th |
| 1.6.2003 | 24 h Nürburgring | 16 | Falcon | Newton / Maries / Erdos / Wiseberg | | DNS |
| 1.6.2003 | 24 h Nürburgring | 56 | Focus RS | Mace / Gummersbach / Mountain / Briggs | | 141st |
| 1.6.2003 | 24 h Nürburgring | 57 | Focus RS | Wölflick / Esser / Roberts / De Schaetzen | | 88th |
| 1.6.2003 | 24 h Nürburgring | 77 | Fiesta ST | Pietsch / Senz / Fahrner / Auer | KDS-Motorsport Deutsches Rallye Team | 69th |
| 1.6.2003 | 24 h Nürburgring | 129 | Puma | Braun / von Prittwitz / Mrafko / Hess | DMC Dürener Motorsportclub | 81st |
| 1.6.2003 | 24 h Nürburgring | 130 | Puma | Aust / Schumacher / Panowitz / Schupp | | 131st |
| 1.6.2003 | 24 h Nürburgring | 134 | Puma | Herrmann / Keese / Kämmerling / Herrmann | | 85th |
| 1.6.2003 | 24 h Nürburgring | 142 | Fiesta ST | Gerling / Bermel / Funke / Rother | | DNF |
| 1.6.2003 | 24 h Nürburgring | 143 | Puma RS | Ebbing / Zetterer / Meiering / Glath | | 137th |
| 1.6.2003 | 24 h Nürburgring | 147 | Fiesta BR | Böckmann / Uhler / Wilbert / Hungerberg | | 154th |
| 1.6.2003 | 24 h Nürburgring | 149 | Fiesta ST | Schramek / Vincken / Eckhardt / Surer | Ford-Bank Team Panhuis | 70th |
| 1.6.2003 | 24 h Nürburgring | 150 | Fiesta ST | Marschall / Klenke / Werner / Surer | Ford-Bank Team Panhuis | DNF |
| 1.6.2003 | 24 h Nürburgring | 162 | Fiesta ST | Martin / Bernhardt / Kuhn / Bechtel | TLM Team Lauderbach Motorsport | 124th |
| 1.6.2003 | 24 h Nürburgring | 170 | Focus ST | Ströter / Kallies / Knour / Anspann | | DNF |
| 1.6.2003 | 24 h Nürburgring | 175 | Fiesta ST | Hennes / Stange / Wintersohl / Simon | Ford Autohaus Müller | 106th |
| 8.6.2003 | 400 km Fontana | 11 | Mustang | Davis / Said | ACS Express Racing | 9th |
| 8.6.2003 | 400 km Fontana | 14 | Mustang Cobra R | Lapcevich / Mann | Frederick Motorsports | DNS |
| 8.6.2003 | 400 km Fontana | 30 | Mustang Cobra R | MacDonald / Brown | Frederick Motorsports | DNS |
| 8.6.2003 | 400 km Fontana | 48 | Mustang | Riggins / Machavern | Heritage Motorsports | 3rd |
| 8.6.2003 | 400 km Fontana | 53 | Mustang Cobra R | Assentato / Longhi | TF Racing/Max Q Motorsports | DNA |
| 8.6.2003 | Belcar Spa SER | 92 | Mondeo | de Sordi / Radermecker | Ford Genk/MI Racing | 13th |
| 22.6.2003 | 6 h Watkins Glen | 48 | Mustang | Riggins / Machavern / Lagasse | Heritage Motorsports | 10th |
| 28.6.2003 | 400 km Mid-Ohio | 29 | Mustang | Hayner / Curran | Gardeniron.com | 19th |
| 28.6.2003 | 400 km Mid-Ohio | 37 | Mustang Cobra R | Seafuse / Seafuse | JBS Motorsports | 15th |
| 28.6.2003 | 400 km Mid-Ohio | 48 | Mustang | Riggins / Machavern | Heritage Motorsports | 3rd |
| 28.6.2003 | 400 km Mid-Ohio | 52 | Mustang Cobra SVT | Rehagen / Martin | Rehagen Racing | 13th |
| 28.6.2003 | 400 km Mid-Ohio | 53 | Mustang Cobra R | Emil Assentato | TF Racing/Max Q | 16th |
| 3.7.2003 | 250 mile Daytona | 14 | Mustang Cobra R | Camp / Gabel | Frederick Motorsports | 22nd |
| 3.7.2003 | 250 mile Daytona | 30 | Mustang Cobra R | Lapcevich / Martin | Frederick Motorsports | 14th |
| 3.7.2003 | 250 mile Daytona | 48 | Mustang | Riggins / Machavern | Heritage Motorsports | 2nd |
| 3.7.2003 | 250 mile Daytona | 56 | Mustang Cobra R | Ackley | Frederick Motorsports | 25th |
| 8.8.2003 | 250 mile Watkins Glen | 14 | Mustang Cobra R | Ackley / Camp | Frederick Motorsports | 15th |
| 8.8.2003 | 250 mile Watkins Glen | 23 | Mustang GT | Shreiner / Aberman | Horizon Motorsports | 22nd |
| 8.8.2003 | 250 mile Watkins Glen | 30 | Mustang Cobra R | Mountain | Frederick Motorsports | 26th |
| 8.8.2003 | 250 mile Watkins Glen | 37 | Mustang Cobra R | Seafuse | JBS Motorsports | 20th |
| 8.8.2003 | 250 mile Watkins Glen | 48 | Mustang | Riggins / Machavern | Heritage Motorsports | 9th |
| 8.8.2003 | 250 mile Watkins Glen | 52 | Mustang Cobra SVT | Rehagen / Martin | Rehagen Racing | DNA |
| 8.8.2003 | 250 mile Watkins Glen | 53 | Mustang Cobra R | Assentato / Longhi | TF Racing/Max Q Motorsports | 16th |
| 24.8.2003 | 24 h Zolder | 92 | Mondeo | Radermecker / Stelandre / de Sordi / Muytjens | Ford Genk/MI Racing | DNF |
| 21.9.2003 | 6 h Mont-Tremblant | 23 | Mustang GT | Aberman | Horizon Motorsports | 22nd |
| 21.9.2003 | 6 h Mont-Tremblant | 48 | Mustang | Riggins / Barbosa / Machavern | Heritage Motorsports | 10th |
| 21.9.2003 | 6 h Mont-Tremblant | 53 | Mustang Cobra R | Longhi / Assentato | TF Racing/Max Q Motorsports | 15th |
| 21.9.2003 | Belcar Spa RF | 92 | Mondeo | Radermecker / Muytjens | Ford Genk/MI Racing | DNF |
| 5.10.2003 | 400 km Virginia | 23 | Mustang GT | Shreiner / Aberman / Harrell | Horizon Motorsports | DNA |
| 5.10.2003 | 400 km Virginia | 26 | Mustang Cobra R | Jackson / Snipes | Snipes Ford Motorsports | 15th |
| 5.10.2003 | 400 km Virginia | 47 | Mustang Cobra R | Smith / Kohler | TF Racing | DNA |
| 5.10.2003 | 400 km Virginia | 48 | Mustang | Riggins / Machavern | Heritage Motorsports | 11th |
| 5.10.2003 | 400 km Virginia | 52 | Mustang Cobra SVT | Rehagen | Rehagen Racing | 24th |
| 5.10.2003 | 400 km Virginia | 53 | Mustang Cobra R | Assentato / Longhi | TF Racing | DNA |
| 19.10.2003 | Belcar Zolder BM | 92 | Mondeo | Radermecker / Muytjens | Ford Genk/M.I. Racing | DNF |
| 2.11.2003 | 3 h Daytona | 23 | Mustang GT | Aberman / Harrell | Horizon Motorsports | DNA |
| 2.11.2003 | 3 h Daytona | 29 | Mustang | Curran / Hayner | GardenIron.com/Sky Blue Racing | 6th |
| 2.11.2003 | 3 h Daytona | 48 | Mustang | Machavern / Riggins / Barbosa | Heritage Motorsports | 11th |