A 20-car race at Nürburgring or Le Mans is one thing. A field of 50, 60 or more than 100 cars creates a very different workload once multiclass traffic, pit stops and endurance racing are involved.
The answer depends on whether we are comparing official event limits, multiplayer server capacity or modded grids.
Le Mans Ultimate: up to 62 cars in official endurance events
Le Mans Ultimate has one of the clearest documented limits among current endurance simulators.
For its 24 Hours of Le Mans team events, Motorsport Games and Studio 397 have specified a maximum of 62 cars per split.
That allows LMU to run large multiclass fields combining Hypercar, LMP2 and LMGT3 machinery.
The number of entries still varies by event and split, but 62 is an official event limit rather than a community workaround.
Automobilista 2: 48 cars offline, 32 online
Automobilista 2 increased its maximum grid size with Version 1.6.
Reiza raised the supported single-player grid to 48 cars on compatible circuits. Systems with less than 12 GB of physical RAM remain limited to 32 cars.
Multiplayer has a lower limit: Online sessions remain capped at 32 cars.
AMS2 can therefore run larger endurance fields offline than it can in multiplayer.
iRacing: grid size varies by event
iRacing supports large endurance fields, but there is no single number that describes every series and event.
Major endurance races have regularly used fields in the 50-to-60-car range, particularly at circuits such as Daytona, Sebring and Le Mans.
The practical field size depends on the event format, circuit and server configuration.
For that reason, it is better not to describe 64 cars, or any similar figure, as a universal iRacing maximum unless it is specified for a particular event.
Assetto Corsa Competizione can exceed 50 cars on private servers
Assetto Corsa Competizione can also support large multiplayer fields.
Kunos removed earlier artificial car limits for private servers, and 60-plus-car events have been run by the community.
The practical limit depends on the circuit, available pit boxes, server configuration and hardware.
Official Competition Servers generally use smaller fields, so ACC’s biggest grids are more commonly found in privately hosted endurance events.
Assetto Corsa EVO still has much smaller online grids
Assetto Corsa EVO remains in Early Access, and its multiplayer system is still being expanded.
When public multiplayer arrived, races initially supported up to 16 drivers, with Kunos indicating that additional server capacity would follow in later updates.
That leaves EVO well below ACC, LMU and iRacing when comparing current large-grid multiplayer racing.
Its multiplayer development is still focused on expanding the underlying service rather than supporting endurance fields on the scale of the established platforms.
RaceRoom: the old 100-car figure needs context
Older community references often describe RaceRoom Racing Experience as capable of supporting up to 100 cars.
That number should be treated cautiously.
Recent official RaceRoom competitions generally use much smaller fields, often around 20 to 34 cars depending on the championship.
The engine may be capable of larger custom sessions, but without a current technical limit from KW Studios, 100 cars should not be presented as RaceRoom’s current official maximum.
Assetto Corsa mods can push grids beyond 100 cars
If the only objective is to put as many cars as possible on a circuit, the original Assetto Corsa remains the most flexible option.
Modded tracks can include 70, 100 or more than 120 grid slots, depending on how the circuit has been created.
That does not mean every configuration will run reliably.
The practical limit depends on:
- CPU performance
- available RAM
- AI calculations
- track optimisation
- number of unique car models
- custom liveries
- server bandwidth in multiplayer
A 100-car Assetto Corsa race is therefore closer to an experimental configuration than a normal supported grid.
Why large grids demand so much hardware
Adding cars increases more than GPU load.
Each vehicle adds work for the physics engine, AI, collision detection, audio, replay system and network synchronization.
Large endurance grids can also require considerably more memory because the simulator must load additional cars, liveries and textures.
A simulator supporting 60 or 100 cars therefore does not guarantee that every PC can run that field smoothly, particularly in VR, at night or in demanding weather conditions.
Which simulator supports the biggest grids in 2026?
For official modern endurance events, Le Mans Ultimate stands out with a documented 62-car limit for its major team events.
Automobilista 2 supports up to 48 cars offline, while multiplayer remains limited to 32.
Assetto Corsa Competizione can run more than 50 cars on suitably configured private servers, with 60-plus-car community events possible.
iRacing also supports large endurance fields, although the number varies by event rather than following one universal maximum.
The original Assetto Corsa goes much further through modded tracks, where 100-plus-car grids are possible if the track, hardware and configuration can handle them.
- Official endurance event: Le Mans Ultimate, up to 62 cars.
- Offline without mods: Automobilista 2, up to 48 cars.
- Large private GT servers: Assetto Corsa Competizione can exceed 50 cars.
- Experimental modded grids: Assetto Corsa can go beyond 100 cars.
- Assetto Corsa EVO: still developing its multiplayer capacity and currently behind the established endurance simulators in grid size.
See you on the track!
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