THE LM FIELD 2003 as we know it today:

LMP900
- Audi UK AUDI
- PANOZ /motorsport Panoz LMP07(2003) Bryan Herta
PANOZ motorsport Panoz LMP07(2003) David Donohue Gunnar Jeannette Bill Auberlen
- Riley & Scott R&S MkIIIC - Elan
- Riley & Scott R&S MkIIIC - Elan
- Racing for Holland Dome S101 Judd Lammers Hillebrand
- Courage Compétition Courage C60JX Evo IV- Judd GV4 Hélary
- Pescarolo sport COURAGE-PEUGEOT- C60 Bourdais Boullion
- Pescarolo sport COURAGE-PEUGEOT- C60
- Playstation TEAM ORECA Dallara
- Playstation TEAM ORECA Dallara
- Lister Lister LMP900 Campbell-Walter Verdon-Roe Kox
- TEAM ASCARI ASCARI KZR1-Judd GV4 Zwart
- Sezio Florida Norma M2000-02 Ford
- Bob Berridge Lola B98/10 Judd
- Piper Design Piper P01

LM GTP
- Team Bentley Bentley EXP Speed 8 V8 4l Tom Kristensen Capello
- Team Bentley Bentley EXP Speed 8 V8 4l
- Team Bentley Bentley EXP Speed 8 V8 4l

LMP675
- Welter Gerard WR LM 2003Peugeot V6
- Idée Verte WR Peugeot GPL
- Autoexe Autoexe LM02 Terada Daoudi
- MG sport & racing LtD MG EX257(2002)
- MG sport & racing LtD MG EX257(2002)
- Dyson Racing MG-Lola EX-257
- Intersport MG-Lola EX-257
- Bucknum Racing Pilbeam MP84 Nissan
- RN Motorsport YGK/Reynard John Nielsen Casper Elgaard
- Courage C65
- Courage C65

GTS
- Corvette racing Corvette C5R
- Corvette racing Corvette C5R
- Team Rahal Corvette C5R
- Larbre Compétition Chrysler Viper GTS-R
- Casport Holland Pagani Zonda C12 Mike Hezemans
- Euro Sportscar Pagani Zonda C12
- Team Schnitzer BMW M3
- David Price Racing Prodrive Ferrari 550 Maranello
- Prodrive racing Prodrive Ferrari 550 Maranello
- Saleen S7-R

GT
- Racer's Group Porsche 996 GT3-RS
- Michael Colucci Racing Corvette C5-R
- Michael Colucci Racing Corvette C5-R
- Cirtek Motorsport Corvette C5-R
- Rac Sport Salisbury Morgan Aero 8
- TVR TVR Tuscan Rs
- TVR TVR Tuscan Rs
- DAMS Nissan 350 Z
- York City Racing Vauxhall VX220 ?Porsche 996 GT3-RS ?
- Risi Competizione Ferrari 360 Modena
- Risi Competizione Ferrari 360 Modena
- Veloxq Motorsport Ferrari 360 Modena
- Veloxq Motorsport Ferrari 360 Modena
- Racing Team Holland Spyker C8 Double 12