Assetto Corsa Competizione: Complete Guide

This guide covers Assetto Corsa Competizione (ACC) from the first lap to running clean online races: setup of your wheel or pad, the driving model, tyres and setups, the career and championship modes, multiplayer ratings and endurance racing.

Researched September 2026 — current as of v1.10.4 (the free 2025 GT World Challenge season update, 22 December 2025). Live games change; check the linked sources if something differs.

What ACC Is (and Is Not)

ACC is Kunos Simulazioni's official GT World Challenge simulator. Unlike the original Assetto Corsa, it is focused almost entirely on GT racing: GT3 is the core class, with GT4, GT2, and one-make cup/challenge cars added through DLC. Every circuit is laser-scanned, weather and day/night cycles are dynamic, and the physics model covers tyres, aero, electronics (ABS, TC, engine maps) and damage in detail.

Kunos' newer title, Assetto Corsa EVO, entered Steam Early Access on 16 January 2025, but ACC remains the go-to GT3 sim and still gets season updates: the 2025 liveries and driver rosters arrived for free in December 2025 (v1.10.4), and an Alpine Esports Series livery was added in October 2025.

DLC at a glance

DLC | What it adds

Intercontinental GT Pack | Bathurst (Mount Panorama), Laguna Seca, Kyalami, Suzuka

American Track Pack | Circuit of the Americas, Indianapolis, Watkins Glen

24H Nurburgring Pack | The Nurburgring Nordschleife layout used for the 24h race

British GT Pack | British GT championship content (UK circuits and entries)

GT4 Pack | The GT4 class

GT2 Pack | The GT2 class

Challengers Pack | Five additional cars, including the Audi R8 LMS GT3 Evo II

2020 GT World Challenge Pack | 2020 season content

2023 GT World Challenge Pack | 2023 season content

The Ultimate Edition bundle on Steam contains the base game plus all of the above. Online lobbies often run DLC tracks, so if you plan to race online seriously, the Intercontinental and American packs are the most commonly required.

Quick Start

• Calibrate your hardware first. In Options > Controls, set steering lock and let ACC read it automatically for your wheel, calibrate pedals, and set a comfortable force feedback gain. Clipping FFB (hitting 100% constantly) hides detail, so aim for strong but not maxed-out feedback.
• Leave ABS and traction control on. Real GT3 cars race with them. Treat TC and ABS levels as part of your setup, not training wheels.
• Use the default "Safe" setup to learn a track, then move to "Aggressive" once you are consistent. Both are provided for every car and track.
• Do not chase the fastest car. Balance of Performance (BoP) keeps GT3 cars close. Pick a car whose handling you like. Front-engined cars (Mercedes-AMG, BMW M4, Aston Martin, Bentley) tend to be more stable; mid-engined cars (Ferrari, Lamborghini, McLaren, Audi) rotate more; the Porsche 911 GT3 R is rear-engined and rewards very specific technique.
• Watch your tyre pressures. ACC's tyre model punishes wrong hot pressures heavily. See the tyres section below.
• Brake in a straight line and release gradually. Trail-braking (easing off the brake while turning in) is how you rotate a GT3 car. Stomping and releasing in one step makes the car understeer.
• Learn the MFD (multi-function display). It is how you change TC, ABS, brake bias, engine map, and plan pit stops in race.
• Use hotlap and practice with the racing line off as soon as possible. The racing line is a crutch that also hides the real braking references.
• Online, protect your Safety Rating. Clean driving unlocks better servers. Being fast is secondary.

Controls and Essential Bindings

Default keyboard bindings exist, but you should bind the following to wheel buttons if you have them:

Function | Why you need it

TC up / TC down | Adjust to tyre wear, fuel load and rain

ABS up / ABS down | Lower ABS for more bite, raise it in wet or when locking

Brake bias forward / back | Shift bias rearward to help rotation, forward for stability

Engine map | Lower maps save fuel; wet maps soften delivery

Headlights / Wipers | Mandatory at night and in rain

Pit limiter | Speeding in the pit lane earns a penalty

MFD navigation (up/down/left/right) | Pit strategy and in-race adjustments

Look left / right | Awareness in traffic if you do not use a spotter app

Ignition and starter | Needed after stalling or pitting

Gamepad players: ACC is playable on pad, but increase steering filtering/speed sensitivity in the controls menu and keep the racing line on longer. Smooth inputs matter even more than on a wheel.

Driving Model Fundamentals

Weight transfer

Everything in ACC comes back to where the car's weight is:

• Braking loads the front tyres, giving grip for turn-in.
• Throttle loads the rear, stabilising the car on exit.
• Lift-off mid-corner unloads the rear and can cause oversteer, especially in mid-engined cars.

Braking

• GT3 cars have big downforce at speed, so you can brake hardest at the start of the zone and progressively release as speed (and downforce) drops.
• If you lock the fronts, you have either too much front brake bias, too low ABS, or you are simply braking too hard at low speed.
• Brake temperatures: Front brakes overheating in long races reduces stopping power. Brake ducts in the setup control this.

Throttle and traction

• Apply throttle progressively once the car is rotated. TC will cut power if you are too aggressive, which is slower than being smooth.
• In the wet, raise TC and consider the wet engine map.

Kerbs

Laser-scanned kerbs are faithful to the real circuits. Some are useful (flat, low kerbs), others (sausage kerbs, high serrated kerbs) will launch the car. Learn each track's kerbs in practice.

Tyres, Pressures and Setups

Tyres

ACC models tyre pressure, temperature, wear and grip in detail. The key rule: what matters is the hot pressure when the tyres are up to temperature, not the cold pressure you set in the garage.

• Since the v1.9 tyre model update (2023), dry slicks are generally targeted at roughly 26.0 to 27.0 psi hot. Older guides quoting 27.3 to 27.9 psi predate that change. Always cross-check with the in-game tyre display and telemetry.
• Wet tyres want noticeably higher hot pressures than slicks (commonly quoted around 30 to 31 psi). Start from the "Safe" wet setup and adjust.
• Cold ambient and track temperatures mean lower hot pressures, so raise cold pressures slightly at night or on cold days.
• Out-laps are slow because tyres are cold. Do not push hard on lap one after a pit stop.

Setup priorities (in order)

• Tyre pressures for the conditions.
• Fuel for the session length (plus a safety margin).
• Brake bias to taste.
• Electronics (TC, ABS, engine map).
• Aero (rear wing up for high-downforce tracks like Hungaroring, down for Monza).
• Mechanical grip (anti-roll bars, springs, ride height, dampers) only once you understand what you are fixing.

Quick setup troubleshooting

Problem | First thing to try

Understeer on entry | Move brake bias back slightly, soften front anti-roll bar

Understeer mid-corner | Soften front anti-roll bar, reduce front ride height

Oversteer on exit | Increase TC, soften rear anti-roll bar, add rear wing

Snappy on lift-off | Shift brake bias forward, add rear wing

Car bottoming over kerbs | Raise ride height, stiffen bump stops

Front brakes overheating | Open front brake ducts

Game Modes

Single player

• Career: Starts you in a rookie programme with evaluation sessions, then places you in championships. It is a good structured introduction to race weekends.
• Championship: Run a full GT World Challenge-style season with your choice of car. Great for learning every track.
• Hotlap, Hotstint and Superpole: Solo time-attack modes for learning a track and chasing lap times.
• Special Events: Kunos-run time-limited challenges with leaderboards; they are also the main way to raise your Pace rating.
• Custom Race / Weekend: Set up practice, qualifying and race sessions with your preferred AI strength and aggression, time of day and weather.

AI tips

• Set AI strength so that you finish mid-pack. Beating 100% AI on some tracks is harder than others; adjust per circuit.
• Lower AI aggression if you want clean racing practice without contact.

Multiplayer and ratings

ACC multiplayer is built around a rating system. The main ones:

Rating | What it measures

Track Competence (TR) | Clean, consistent laps on each circuit; up to 3 Track Medals per track

Consistency (CN) | Driving in a repeatable fashion, lap after lap

Car Control (CC) | Smooth driving without excessive sliding

Pace (PC) | Speed, improved mainly through Special Events

Safety (SA) | Clean racing against AI or players without contact

Racecraft (RC) | Racing wheel-to-wheel with other drivers cleanly

Competition (CP) | Results on multiplayer competition servers

Ratings run 0-100 and unlock progressively. Many public servers require a minimum Safety Rating (SA) and/or Track Medals. You earn Track Medals by lapping cleanly and consistently on each circuit, and they gate access to competition servers.

Race Weekends and Endurance

Qualifying

• Get a clean out-lap to warm tyres, do two or three pushing laps, then pit.
• Track evolution means the track gets faster later in a session.

The start

• ACC uses rolling starts for GT races. Stay in formation, keep your speed, and do not overtake before the start line.
• Turn one on lap one is where most incidents happen. Arriving in second place is better than not arriving.

Pit strategy

• Plan stops through the MFD: fuel, tyres, pressures, driver swaps (in multi-driver events).
• Mandatory pit windows apply in some formats. Check the server/event rules.
• In changing weather, the decision to switch to wets or back to slicks is the biggest strategic lever you have.

Endurance racing

• Stints longer than a few laps expose tyre wear and brake heating that do not show in sprints.
• Headlights on and wipers ready for night and rain, plus mirror/rear visibility awareness when faster cars lap you.
• Spa 24 Hours is the flagship event. Doing a full 24h solo is possible but brutal; online leagues split it between drivers.

Performance Settings

ACC runs on Unreal Engine 4 and is famously demanding, especially with a full grid at night in the rain.

• Frame rate over eye candy. A stable frame rate matters far more than visuals for driving.
• The biggest performance wins usually come from lowering shadows, reflections/car reflections, foliage, and the number of visible opponent cars.
• DLSS support was added in v1.8.
• VR works but is very heavy. Expect to lower resolution and effects significantly.
• Triple screens: Set the FOV correctly for your screen size and distance; a correct FOV improves braking point judgement.

Common Mistakes to Avoid

• Ignoring tyre pressures. A car that feels "terrible" often just has pressures far outside the ideal window.
• Turning off ABS/TC because it feels "more real". GT3 cars use them. You will be slower and less consistent without.
• Overdriving. Braking later than you can slow down for costs more time on exit than you gain on entry.
• Changing ten setup values at once. Change one thing, test, then decide.
• Racing online before you can do ten clean laps in a row. Each incident hits your Safety Rating and other drivers' races.
• Neglecting fuel. Running out on the last lap is a classic endurance mistake. Add a margin.
• Not practicing in the wet. Many online races have dynamic weather; being able to drive in rain is a massive advantage.
• Chasing the "meta" car. BoP is adjusted periodically and the gaps are small. Comfort beats theoretical pace.

Advanced Tips

• Reference laps: Watch a fast replay or use the ghost car in hotlap to compare braking points.
• Brake bias as a driving tool: Moving bias rearward a click or two can help rotation into slow corners; move it forward when tyres wear.
• Engine maps save fuel: In endurance races, a leaner map for a lap can save a pit stop's worth of time.
• Telemetry: Community tools that read ACC's shared memory can log inputs and tyre data. Use them to see where you lose time.
• Tyre sets: In race weekends, you have limited sets. Save your best sets for qualifying and race.
• Traffic management (multi-class): When GT4 or GT2 cars share the track with GT3, faster cars pass; slower cars hold their line predictably.
• Consistency is speed. In a 60-minute race, ten laps within two tenths beat one hero lap and three off-tracks.
• Learn one track deeply. Monza, Spa, Barcelona and Brands Hatch are popular league choices; mastering one teaches transferable skills.

FAQ

Is ACC still being updated in 2026? It receives season content rather than big feature updates. The 2025 GT World Challenge liveries and rosters arrived for free in v1.10.4 (22 December 2025). Kunos' major development focus is Assetto Corsa EVO.

Which DLC should I buy first? For online racing, the Intercontinental GT Pack and American Track Pack add tracks that appear often in leagues. For a new class, the GT4 Pack is the most popular.

Can I play ACC with a controller? Yes. It is harder than on a wheel, but smooth inputs and adjusted steering filter settings make it workable.

What car should a beginner pick? A stable front-engined GT3 car such as the Mercedes-AMG GT3 or BMW M4 GT3 is forgiving. Choose what you enjoy; BoP keeps the grid close.

Why am I so slow compared to aliens online? Most time comes from braking and exit speed, not top speed. Compare braking points with a fast replay, check pressures, and focus on consistency.

Is ACC or Assetto Corsa EVO better? ACC is the complete, focused GT3/GT4 sim with a mature multiplayer rating system. EVO is a broader road and race car sim that is still in Early Access as of this writing.

Does ACC have mods? ACC does not support car/track mods the way the original Assetto Corsa does. Custom liveries are supported.

Sources

• Assetto Corsa Competizione on Steam
• ACC 2025 Season update (assettocorsa.gg)
• Assetto Corsa Competizione (Wikipedia)
• Assetto Corsa EVO on Steam
• ACC Ultimate Edition bundle