Assetto Corsa Competizione: GT racing
Assetto Corsa Competizione is the official sim of the Fanatec GT World Challenge / SRO series, and it does one thing: GT racing. The base game is a $39.99 one-time purchase that routinely drops to about $11.99 (70% off) on Steam sales, with no subscription. If you want GT3 and nothing else, it is the cheapest serious way in.
What ACC is
Section titled “What ACC is”ACC is GT-only. The hero class is the full real GT3 grid — Ferrari 296 GT3, Porsche 992 GT3 R, Mercedes-AMG GT3, BMW M4 GT3, Audi R8 LMS Evo II, McLaren 720S GT3 Evo, Lamborghini Huracán GT3 Evo2, Ford Mustang GT3 — plus GT4, GT2, TCR, Porsche Cup, and Ferrari Challenge content packs. Tracks are the SRO calendar circuits: Spa, Monza, Nürburgring (including the 24h Nordschleife combined layout), Brands Hatch, Zandvoort, Bathurst, Suzuka, Kyalami, Indianapolis, Watkins Glen, Laguna Seca, COTA. The Ultimate Edition bundles nine content packs into roughly 25 tracks.
What ACC does best
Section titled “What ACC does best”Three things, clearly.
Dynamic weather and night racing. Built on Unreal Engine 4, ACC models rain physics, a wet line drying out as cars run over it, and full day/night transitions. Running Spa at 2 a.m. in light rain with a drying line is something iRacing’s GT3 still does not match.
The real grid on real circuits. Because it is the licensed SRO game, the car list and the calendar are the actual championship, not approximations.
Setup depth. Wings, dampers, brake bias, and tyre pressures all matter. Most GT3 cars want hot pressures around 27.0–27.5 psi; miss that window and the car goes greasy. See setups for how to read the numbers.
ACC vs iRacing — the real differences
Section titled “ACC vs iRacing — the real differences”| ACC | iRacing | |
|---|---|---|
| Cost | Subscription (~$10–13/mo) + paid cars/tracks | |
| Scope | GT only | All disciplines, including ovals |
| Online | LFM (free 3rd-party ranked) | Built-in ranked, always-on |
| Weather/night | Best in class | Limited in GT3 |
| Tire feel | Snappier on-limit | Widely praised laser-scanned model |
ACC is front-loaded once and then free forever. iRacing is a recurring subscription plus per-content purchases — the cars and tracks you race are bought à la carte. Over a year of regular racing, ACC is meaningfully cheaper.
Online racing — LFM is the answer
Section titled “Online racing — LFM is the answer”ACC’s built-in lobbies are quiet. The real online home is Low Fuel Motorsport (LFM), a free third-party matchmaking platform that gives ACC an iRacing-style ranked structure on PC. It uses an Elo-based speed rating to split the field into evenly matched races, and a separate Safety Rating on a 1.00–9.99 scale (higher is better). You can gain up to +0.30 SR per race, with a +0.10 bonus for a zero-incident race. To enter the ranked timetable you first do a license run: with Safety Rating at 80 you run 7 consecutive clean laps whose average beats 107% of the track’s lap record to earn the Rookie license. Races run on a fixed schedule, the same way iRacing’s official sessions do.
Physics and feel
Section titled “Physics and feel”ACC is snappier on the limit than the original Assetto Corsa or iRacing. The car rewards trail-braking and patience — the classic mistake is getting on the throttle before the car has finished rotating, which spits you wide or loose. Critics call the cars “floaty” next to iRacing’s tire model, but the trade is that ACC punishes a rushed corner exit hard. Get the braking and rotation sequence right and the snappiness becomes predictable.
FFB setup
Section titled “FFB setup”ACC’s force feedback is notoriously light out of the box, and it does not bolt on canned road-surface effects — it transmits load and slip, not texture. Raise Gain until the in-game FFB meter is using its full range without clipping, set Minimum Force around 3–8% so you feel light loads off-center, and use Dynamic Damping for weight at parking and low speed. Full process on the force feedback page.
Who should pick ACC
Section titled “Who should pick ACC”Pick ACC if you are a GT3/GT4 purist, you want the lowest cost of entry, or you love wet-weather, night, and endurance racing with driver swaps. Pick iRacing if you want ovals, multiple disciplines, the largest always-on playerbase, and built-in ranked without a third-party platform. If you want prototypes alongside GT3 and run LFM already, Le Mans Ultimate is the endurance-focused alternative.
System requirements note
Section titled “System requirements note”ACC is heavier than the older Assetto Corsa because of UE4. Full grids at Spa and Nürburgring tax the GPU, and VR roughly doubles the cost of a stable frame rate. Budget for more GPU than you think for 1440p with full fields, and expect to lower settings for clean VR.
Frequently asked questions
How do I get clean ranked racing in ACC?
ACC's built-in lobbies are quiet. The real home is Low Fuel Motorsport (LFM), a free third-party platform with an Elo-style speed rating and a separate Safety Rating on a 1.00–9.99 scale. You first run a license test — with Safety Rating at 80, 7 consecutive clean laps whose average beats 107% of the track record — to earn the Rookie license, then race a fixed schedule the way iRacing's official sessions run.
What tire pressures should GT3 cars run in ACC?
Aim for hot pressures around 27.0–27.5 psi for most GT3 cars. Miss that window and the car goes greasy and loses grip. Pressure, brake bias, dampers, and wings all matter in ACC — see setup theory and tire pressure and wear for how to read the numbers.
Why is ACC's force feedback so weak out of the box?
ACC transmits load and slip, not canned road texture, and it ships light. Raise Gain until the in-game FFB meter fills its full range without clipping, set Minimum Force around 3–8% so you feel light loads off-center, and use Dynamic Damping for weight at parking and low speed. Full process on the force feedback page.
Is ACC or iRacing cheaper for GT3 racing?
ACC. It is ~$40 once (often ~$12 on sale) and free forever; iRacing is a recurring subscription plus per-content purchases bought à la carte. Over a year of regular GT3 racing ACC is meaningfully cheaper — but iRacing gives you built-in always-on ranked without a third-party platform.