| Entrant | Car | Engine | No. | Drivers | ||
|---|---|---|---|---|---|---|
 | Cadillac Racing | Cadillac V-LMDH | Cadillac LMC55R 5.5 L V8 Hybrid | 2 |   | Earl Bamber Alex Lynn |
 | Porsche Penske Motorsport | Porsche 963 | Porsche 4.6 L Turbo V8 Hybrid | 5 6 |     | Matt Campbell Michael Christensen Frederic Makowiecki Kevin Estre Andre Lotterer Laurens Vanthoor |
 | Toyota Gazoo Racing | Toyota GR010 Hybrid | Toyota H8909 3.5 L Turbo V6 Hybrid | 7 8 |   | Mike Conway Kamui Kobayashi Nyck de Vries Sebastien Buemi Brendon Hartley Ryo Hirakawa |
 | Isotta Fraschini | Isotta Fraschini Tipo6-C | HWA 3.0 L V6 Turbo Hybrid | 11 |  | Antonio Serravelle Carl Wattana Bennett Jean-Karl Vernay |
| Hertz Team Jota | Porsche 963 | Porsche 4.6 L Turbo V8 Hybrid | 12 38 | | Will Stevens Callum Ilott Norman Nato Jenson Button Philip Hanson Oliver Rasmussen |
| BMW M Team WRT | BMW M Hybrid V8 | BMW P66/3 4.0 L Turbo V8 Hybrid | 15 20 |  | Dries Vanthoor Raffaele Marciello Marco Wittmann Sheldon van der Linde Robin Frijns Rene Rast |
| Alpine Endurance Team | Alpine A424 | Mecachrome 3.0 L V634 Turbo Hybrid | 35 36 |  | Paul-Loup Chatin Ferdinand Habsburg Charles Milesi Nicolas Lapierre Mick Schumacher Matthieu Vaxiviere |
| Ferrari - AF Corse | Ferrari 499P | Ferrari 3.0 L Turbo V6 Hybrid | 50 51 |  | Antonio Fuoco Miguel Molina Nicklas Nielsen James Colado Antonio Giovinazzi Alessandro Pier Guidi |
| Lamborghini Iron Lynx | Lamborghini SC63 | Lamborghini 3.8 L Twin-Turbo V8 Hybrid | 63 | | Mirko Bortolotti |
Edoardo Mortara Daniil Kvyat |
| AF Corse | Ferrari 499P | Ferrari 3.0 L Turbo V6 Hybrid | 83 |    | Robert Kubica Robert Shwartzman Yifei Ye |
| Peugeot Total Energies | Peugeot 9X8 | Peugeot 2.6 L Turbo V6 Hybrid | 93 94 | | Mikkel Jensen Nico Muller Jean-Eric Vergne Paul di Resta Loic Duval Stoffel Vandoorne |
| Proton Competition | Porsche 963 | Porsche 4.6 L Turbo V8 Hybrid | 99 | | Harry Tincknell Neel Jani Julien Andlauer |
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