iRacing 2026 Season 4 is HERE!
September 9th, 2026 by Chris Leone
The 2026 Season 4 build of iRacing has officially been deployed! Featuring four all-new cars, three re-scanned tracks, and a host of additional quality of life updates, here’s a look at what to expect from our newest release:
- Aston Martin Valkyrie AMR-LMH: One of modern prototype racing’s most popular machines makes its long-awaited iRacing debut, and will be rain-ready out of the gate.
- Caterham 420R and Academy: Packaged together as a two-for-one set, these venerable road racers are also rain-enabled at launch.
- Gen 4 Grand National: Go back in time to the early 2000s with a return to Grand National-spec stock car racing.
- Road America: Newly rescanned and fully rebuilt, Road America expands to four total configurations with the addition of two Short layouts.
- The Milwaukee Mile: Also rescanned and rebuilt, Milwaukee’s infield road course has been added to its legendary oval as a second layout.
- Mid-Ohio Sports Car Course: All five Mid-Ohio layouts have gotten an update as part of its rescan and rebuild.
- Vehicle Updates: Both the Global Mazda MX-5 Cup and paved Sprint Car have received major physics and art updates.
- Track Art Updates: Summit Point Raceway and Michelin Raceway Road Atlanta have had their appearances modernized with the new build.
- New Sim UI: New widgets for Pit Summary (all vehicles) and Car Damage (selected vehicles) launch with the new build, along with Reference Car UI (in Time Trial, Time Attack, and Test Drive modes), Minimal/Pinned UI mode, track map updates, an improved Fuel Calculator widget, and much more.
- New Features: Multi-class pace car starts are available at more than 50 track layouts, while multi-threaded physics updates, expanded car rule sets, and full UTF-8 character support serve as quality of life updates.
- AI Racing: All four new cars and every configuration for all three re-scanned tracks have been unlocked for AI with their release, as well as several longtime iRacer favorite cars and additional configurations from existing tracks.
Click here to read the full release notes in the iRacing forums!
Click here to explore the iRacing 2026 Season 4 build page!
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