iRacing’s 2026 Season 4 build brings the Aston Martin Valkyrie AMR-LMH, Caterham 420R, Caterham Academy and Gen 4 Grand National to the service.
Road America, the Milwaukee Mile and Mid-Ohio have been rescanned and rebuilt. Road America gains two short layouts, and Milwaukee adds its infield road course.
The update also introduces Pit Summary and selected Car Damage widgets, updates the track map and improves the fuel calculator. All four new cars and every configuration of the three rebuilt tracks are available for AI racing. See the original release announcement for the full breakdown.
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Read the full announcement, details and release notes from the original publisher.