iRacing Season 4 Adds Four New Cars, Three Rescanned Tracks And A Lot More

iRacing has rolled into 2026 Season 4, and this is one of those updates where the word “season” feels like it is doing a lot of work. The latest build adds four new race cars, three rescanned tracks, rebuilt vehicles, major track artwork updates, and a collection of changes aimed at making the simulator itself easier to use.

The biggest additions for Season 4 are the four new cars. The Caterham Academy brings one of Britain’s long-running entry-level racing series to the sim, while the Caterham 420R represents the car used in the Seven Championship UK. Both offer a very different experience from the other major addition, the Gen 4 Grand National, which recreates the stock cars that competed one level below NASCAR’s top series during the Gen 4 era.

Then there is the Aston Martin Valkyrie AMR-LMH, bringing Aston Martin’s modern prototype racer into iRacing. The car represents the fruits of Aston Martin’s push into the current generation of endurance prototypes, which began back in 2019.

Two existing cars have also been rebuilt from the ground up. The Global Mazda MX-5 Cup and paved Sprint Car have received overhauls and are now ready for rain racing, adding another layer of weather-dependent competition to both.

Tracks are getting plenty of attention as well. The Milwaukee Mile, which has more than a century of motorsport history behind it, has been rescanned, as has Mid-Ohio Sports Car Course. Road America also receives a refresh, with two of its shorter layouts being added to iRacing for the first time.

The work does not stop with fresh scans. Summit Point Raceway and Michelin Raceway Road Atlanta have both received major artwork updates, bringing their visual presentation more in line with the modern era.

Finally, Season 4 gives the simulator interface some attention. New Pit Summary and Car Damage widgets provide more information during sessions, while the Reference Car UI and new Minimal UI mode give drivers additional ways to configure what they see on screen.

Taken together, iRacing Season 4 looks like a pretty big refresh. There are new cars for several different styles of racing, historic and modern track updates, rebuilt vehicles, and quality-of-life improvements. For a simulator built around constantly refining the racing experience, that may be the more important story.

Tags: iRacing, racing simulators, Season 4 Written byMitchell Gassner Old enough to have played retro games when they were still cutting edge, Mitch has been a gamer since the 70s. As his game-fu fades (did he ever really have any?), it is replaced with ever-stronger, and stranger, opinions. If that isn't the perfect recipe for a game reviewer, what is?