
Get ready to hit the track. iRacing 2025 Season 4 is live now!
The popular GT3 and GT4 classes get new additions and a new step on the Road to INDY ladder makes its debut.



NEW TRACK
Mexico City, Mexico


Designed as a thesis study in the early 1950s by student Oscar Fernandez, Autódromo Hermanos Rodriguez has hosted many of the world’s most iconic racing series over its storied history. From what is now known as the Mexico City Grand Prix to the NASCAR Cup Series’ first-ever event outside of the United States in 2025, the track has evolved numerous times over the years to accommodate different vehicles and advances in driver safety.
Most of Autódromo Hermanos Rodriguez’s layouts, including the current 2.67-mile Grand Prix layout, feature a lengthy front straightaway into a right-angle, right-handed first corner. Top-tier open-wheel cars can reach a top speed exceeding 220 miles per hour before this initial braking zone. Also unique to the venue is the Foro Sol section, which sends drivers through baseball stadium seating; this same area of the track has also been used for the 2019 Race of Champions. The Autódromo also boasts a flat, one-mile oval that can both host stock car races and serve as the basis for shorter road racing layouts.
The New iRacing UI is finally here! The in-Sim UI has been completely rebuilt using modern tech, tools, and design sense.







The entire GT4 Class has received a multifaceted performance, tires, and physics overhaul. The Hybrid system for vehicles has been updated for improved realism.


The Aston Martin Vantage GT3 EVO, Dallara IL-15 & Ford Mustang GT4 come fully equipped and ready for rain racing in Season 4.
Our AI drivers were busy this season learning how to drive the Aston Martin Vantage GT3 EVO, Ford Mustang GT4, and the Gen 4 stock cars on multiple configs of seven different circuits, including every layout of Autódromo Hermanos Rodríguez.

Visit our YouTube channel to see all of our 2025 Season 4 content & features in action!
Get an in-depth overview of all of our exciting 2025 Season 4 content & features!
Visit the Staff Announcements forum to hear about the latest patches and hotfixes!