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2026 Season 1 Patch 1 Hotfix 1 Release Notes [2025.12.16.02]

[p]This Hotfix Release contains a critical fix for an unpredicted serious issue with the 2026 Season 1 Initial Release.[/p][p]

[/p][h2]iRacing Simulator[/h2][p]---------------------------------------------------------[/p][p][/p][h3]Weather[/h3]
  • [p]Fixed a critical issue that could crash Race Servers where the code managing water heights and rain rates at certain tracks could exceed the allowable value bounds.[/p]
[p]

[/p]

2026 Season 1 Patch 1

[p][/p][h2]2026 Season 1 Patch 1 Release Notes \[2025.12.14.01][/h2][p]---------------------------------------------------------[/p][p]
[/p][p]This Patch Release contains important fixes as well as some updates for the 2026 Season 1 Release.[/p][p]


[/p][h2]iRacing Simulator[/h2][p]---------------------------------------------------------[/p][p]
[/p][h3]AI Racing[/h3]
  • [p]AI Drivers have improved their racing skills with the following vehicles:[/p]
    • [p] NASCAR Truck Series[/p]
    • [p]Mercedes-AMG W13 E Performance.[/p]
[p]
[/p][h3]User Interface[/h3]
  • [p]Fixed a critical issue where the interface was blurry for some VR users.[/p]
  • [p]Fixed an issue where certain dropdown selections would be blank in the Options menu.[/p]
  • [p]Fixed an issue where the FOV calculation was not being saved correctly.[/p]
  • [p]Fixed an issue where some widgets were not responding to opacity changes correctly.[/p]
  • [p]Fixed an issue with license data overlapping the delta time in the large Relative Standalone Widget.[/p]
  • [p]Fixed a few issues with the rows for the Standings and Relative Standalone Widgets.[/p]
  • [p]Horizontal scrolling should no longer occur when the UI scale is greater than 100%.[/p]
  • [p]There is a known issue where extra driver names may populate the Entries table or the Driver Focus selection while viewing replays.[/p]
    • [p]They are being carried over from Open Practices to Races in Official Sessions. We are still investigating the cause of this issue. This issue has no impact on scores and results - it is visual artifacts only.[/p]
[p]
[/p][h3]Graphics[/h3]
  • [p]Improved the draw distances for a variety of trees at a variety of tracks.[/p]
  • [p]Fixed a Simulator crash or hang related to rendering that could occur when switching between Session types.[/p]
[p]
[/p][h3]Audio[/h3]
  • [p]Added a feature to mute certain audio categories when at minimal volume.[/p]
    • [p]Engines, tires, chassis/wind, and in-car audio are excluded.[/p]
  • [p]Volume level slider descriptions have been updated to improve results in Options Search.[/p]
  • [p]Fixed a UI bug where some audio controls were hidden.[/p]
  • [p]Fixed an issue in the UI for the Spotter and Voice Chat audio units.[/p]
  • [p]Fixed an issue for the Master Level showing 0-100 in the UI.[/p]
[p]
[/p][h3]Controls[/h3]
  • [p]Improved the handling of Xbox gamepads. Thumb triggers should now be separated even when using Bluetooth functionality.[/p]
[p]


[/p][h2]Cars[/h2][p]---------------------------------------------------------[/p][p]
[/p][h3] Super Formula SF23[/h3]
  • [p]iRacing setups have been updated.[/p]
[p]
[/p][h3]Dallara IR18[/h3]
  • [p]Keyboard control bindings have been added for hybrid regeneration and deployment levels.[/p]
  • [p]iRacing setups have been updated.[/p]
[p]
[/p][h3]Dirt Sprint Car[/h3]
  • [p](ALL) - Per community request, wings are now repaired first when the car is damaged.[/p]
[p]
[/p][h3]FIA Cross Car[/h3]
  • [p]Fixed an issue where the car number slant was facing the wrong direction.[/p]
[p]
[/p][h3]Indy Pro 2000 PM-18[/h3]
  • [p]iRacing setups have been updated.[/p]
[p]
[/p][h3]Porsche 911 Cup (992.2)[/h3]
  • [p]The launch RPM limiter logic has been rewritten.[/p]
    • [p]The system will now 'arm' when the car is stationary. Once the car begins to pull-away, the system will be 'active' for up to 10 seconds or until 2nd gear is selected, after which the launch is considered complete and the system disarmed. This will allow the system to 'arm' again when a pitstop is made or the car is brought to a stop but should avoid accidental activation of the system in normal driving.[/p]
  • [p]Removed a harsh high-pitch frequency artifact from the left channel of the in-car sounds.[/p]
  • [p]For the paint template, added C-pillar windows to the body texture, and updated the decal and mandatory textures.[/p]
[p]
[/p][h3]SRX[/h3]
  • [p]iRacing setups have been updated.[/p]
[p]


[/p][h2]Tracks[/h2][p]---------------------------------------------------------[/p][p]
[/p][h3]Adelaide Street Circuit[/h3]
  • [p]A slowdown penalty has been added to the Turn 4 entry curb.[/p]
  • [p]The Turn 2 slowdown penalty zone has been made slightly more lenient.[/p]
  • [p]A "150" brake marker has been correctly attached to the fence.[/p]
  • [p]Bridges now correctly block rainfall beneath them.[/p]
  • [p]Additional hedges have been planted.[/p]
[p]
[/p][h3]Lucas Oil Speedway[/h3][p]- (Off Road) - Adjusted the track cameras.[/p][p]
[/p][h3]Mount Panorama Circuit[/h3]
  • [p]Bridges now correctly block rainfall beneath them.[/p]
  • [p]Some terrain seams have been patched up.[/p]
  • [p]Terrain texture details have been updated.[/p]
  • [p]A variety of hovering objects have been properly grounded, including: fences, flagger booths, signs, crowds, utility poles, planters, and structures.[/p]
  • [p]Removed some crowds that were bisected by a fence. They will make full recoveries in hospital.[/p]
[p]
[/p][h3]Rockingham Speedway[/h3]
  • [p]Fixed a visual issue with some stretched wall textures.[/p]
[p]


[/p]

2026 Season 1 Initial Release

[h2]2026 Season 1 Initial Release Notes \[2025.12.08.03][/h2][p]----------------------------------------------------------[/p][p][/p][p]The iRacing 2026 Season 1 Release Build is out of the paddock and on the starting grid! This is one of four major annual releases for iRacing, and adds new content, features, upgrades, and a toolbox-full of fixes for 2026 Season 1, which officially starts on December 16th at 0000 UTC![/p][p][/p][p]We have wasted no time in advancing our new Sim UI towards the next level of awesome and have added several new features for this release, including: Options Search, four Black Box pages have been repackaged into standalone Widgets, and substantial UI customization is now available via the new Widget Editor feature! Standalone Widgets are read-only UI elements you may place anywhere on your screen to monitor important data, including: Lap Timing, Relative, Standings, and Weather. Options Search will let you short-cut navigation and control of all of your iRacing Options. Additionally, with Widget Editor, nearly all UI elements can now have customized size, position, and transparency.[/p][p][/p][p]The iRacing stable expands with two new bays for two brand-new cars: the FIA Cross Car and the Porsche 911 Cup (992.2)! We have updated the aerodynamics model for the NASCAR Trucks using additional real-world data to keep the simulation authentic. The Dallara IR18 has completed an ongoing Hybrid System update, and the art team has refreshed the car to match. The Toyota GR86 has also had a bumper to bumper physics and systems update based on the latest real-world data. The GT3 Class Cars also demanded another suite of updates continuing from last season to really optimize that racing experience.[/p][p][/p][p]iRacing’s newest track offerings bloom in South Australia, with Adelaide Street Circuit, and in Florida with Miami International Autodrome! To go along with our brand new FREE Dirt Road car, we had to add two New Dirt Road Configs: Lucas Oil Speedway - Off Road and Winton Motor Raceway - Rallycross! Rockingham Speedway - Oval has been remodeled to the modern age with new laser scan data, while the historic 2012 track remains preserved for continued use. Mount Panorama has received a comprehensive art upgrade.[/p][p][/p][p]Our simulation engineers have worked hard this season to optimize the initial parameters and properties tracks start their existence within the Sim, including water, puddles, and wetness, and dust, debris, and driving lines. The Oval Refresh project returns with advancements to rubber density and distribution, thermal flow, and ultimately improve lane dynamics and multi-groove racing. And finally, new languages have been added to the non-in-Sim iRacing application, including: French, German, Italian, Portuguese (European), and Portuguese (Brazilian)![/p][p][/p][p]Grab your raincoat, as the Porsche 911 Cup (992.2) is ready for rain racing. AI Drivers have also been fully programmed to race for the gold with the Porsche 911 Cup (992.2). AI Drivers have already mastered all of the new pavement tracks (Adelaide Street Circuit and Miami International Autodrome), and also notched Rockingham Speedway - Oval in their belts with their spare time.[/p][p][/p][p]Season highlights include:[/p]
  • [p]FIA Cross Car \[FREE!][/p]
  • [p]Porsche 911 Cup (992.2)[/p]
  • [p]Adelaide Street Circuit[/p]
  • [p]Miami International Autodrome (five configs)[/p]
  • [p]Two New Dirt Road Configs (Lucas Oil Speedway - Off Road and Winton Motor Raceway - Rallycross)[/p]
  • [p]New Scan Data Config: Rockingham Speedway - Oval[/p]
  • [p]New UI Feature: Options Search[/p]
  • [p]New UI Feature: Widget Editor[/p]
  • [p]New UI Feature: Standalone Widgets (Lap Timing, Relative, Standings, and Weather)[/p]
  • [p]Improved track dust and water initialization[/p]
  • [p]Dallara IR18 (Art and Hybrid System updates)[/p]
  • [p]Toyota GR86 (Physics and systems updates based on the latest real-world info)[/p]
  • [p]NASCAR Truck Series aerodynamic model updates[/p]
  • [p]GT3 Class Car updates[/p]
  • [p]Oval Refresh Updates: Rubber and rubbering improvements for multi-groove racing[/p]
  • [p]New languages have been added to iRacing, including: French, German, Italian, Portuguese (European), and Portuguese (Brazilian)[/p]
  • [p]Rain racing for the new Porsche 911 Cup (992.2)[/p]
  • [p]AI Racing comes built-in with the new car: Porsche 911 Cup (992.2)[/p]
  • [p]AI Racing is available at seven new track configs! (Adelaide Street Circuit, all FIVE configs for Miami International Autodrome (Grand Prix, Marina Loop, MIA Loop, Extended MIA Loop, and Extended Marina Loop), and Rockingham Speedway - Oval)[/p]
  • [p]Hundreds of precision-crafted new vehicle setups[/p]
[p]
[/p][p]Visit our 2026 Season 1 features page here: [/p][p]https://www.iracing.com/seasons/2026-s1/[/p][p]

[/p][p]Full 2026 Season 1 Release Notes and details can be found on the iRacing forums here:[/p][p]https://forums.iracing.com/discussion/89188/2026-season-1-initial-release-notes-2025-12-08-03
[/p]

2025 Season 4 Patch 4 Release

[h2]2025 Season 4 Patch 4 Release Notes \[2025.11.18.02][/h2][p]
[/p][p]This Patch Release contains important fixes as well as some updates for the 2025 Season 4 Release.[/p][p]

[/p][h2]Simulation:[/h2][p][/p][h3]Performance[/h3]
  • [p]Fixed a recent and prevalent issue where framerate significantly drops after racing for some length of time.[/p]
[p][/p][h3]Race Control[/h3]
  • [p]Slightly improved the precision used for verifying missed checkpoints and course cut black flags.[/p]
[p][/p][h3]AI Racing[/h3]
  • [p]AI Drivers have improved their racing skills at Circuit des 24 Heures du Mans.[/p]
[p][/p][h3]Audio[/h3]
  • [p]Fixed an issue where the RPM on nearby opponent cars could appear to sound substantially too high.[/p]
[p][/p][h3]User Interface[/h3]
  • [p]Improved the performance and functionality of the Skew (S) meter.[/p]
  • [p]Corrected some bindings for Best Times and Delta Times.[/p]
  • [p]Add a subtle background to the Player’s entry for Relative Brake Bias.[/p]
  • [p]Fixed an issue in Settings where the FOV calculator would not accept text inputs.[/p]
  • [p]Fixed an issue where the Custom Sector box was not showing +/- time correctly.[/p]
  • [p]For the Camera Tool, fixed a crash-to-desktop error with the context menu.[/p]
[p][/p][h3]Controls[/h3]
  • [p]Updated to the latest Simucube API.[/p]
[p]

[/p][h2]Cars:[/h2][p][/p][h3]Audi 90 GTO[/h3]
  • [p]Brake bias adjustments are now allowed in Fixed Setup events.[/p]
[p][/p][h3]Cadillac CTS-V Racecar[/h3]
  • [p]During pit stop repairs, all vehicle damage may now be fully repaired.[/p]
[p][/p][h3]Ford Mustang GT4[/h3]
  • [p]Improved windshield wiper animations and visual effects.[/p]
[p][/p][h3]HPD ARX-01c[/h3]
  • [p]Brake bias adjustments are now allowed in Fixed Setup events.[/p]
[p][/p][h3]Nissan GTP ZXT[/h3]
  • [p]Brake bias adjustments are now allowed in Fixed Setup events.[/p]
[p][/p][h3]Pontiac Solstice[/h3]
  • [p]During pit stop repairs, all vehicle damage may now be fully repaired.[/p]
[p][/p][h3]VW Jetta TDI Cup[/h3]
  • [p]During pit stop repairs, all vehicle damage may now be fully repaired.[/p]
[p][/p][h3]\[Legacy] Dallara IR-05[/h3]
  • [p]Brake bias adjustments are now allowed in Fixed Setup events.[/p]
[p][/p][h3]\[Legacy] Riley MkXX Daytona Prototype - 2008[/h3]
  • [p]During pit stop repairs, all vehicle damage may now be fully repaired.[/p]
  • [p]Brake bias adjustments are now allowed in Fixed Setup events.[/p]
[p][/p]

2025 Season 4 Patch 3 Hotfix 1 Release Notes [2025.10.17.01]

[h2]2025 Season 4 Patch 3 Hotfix 1 Release Notes \[2025.10.17.01][/h2][p]
[/p][p]This Hotfix Release contains critical fixes as well as some updates for the 2025 Season 4 Patch 3 Release.[/p][p]

[/p][h2]Simulator[/h2][p][/p][h3]User Interface[/h3]
  • [p]Fixed an issue where tire options were available for team members that were not available for the crew chief or driver.[/p]
[p]

[/p][h2]Cars[/h2][p][/p][h3]VW Beetle Lite[/h3]
  • [p]Fixed a critical issue where this car would fail to load into Sessions.[/p]
[p]
[/p]