iRacing has begun its quarterly showcase to reveal its newly added content. In this first approach of the 4 Season of 2025, we will find two new cars that have been somewhat awaited by some members.
Unveiled in the summer of 2023 for use in 2024 and beyond, the current Ford Mustang GT4 has become a popular choice in the category around the world. If its uniquely American style wasn’t enough to sell the skeptics, its immediate results were; in its first race weekend, part of the IMSA VP SportsCar Challenge opener at Daytona, KohR Motorsports’ Luca Mars swept both races on the way to scoring the class title later that year.
As with many other manufacturers, Ford built the Mustang GT4 for the use of customer teams, saving its factory-backed efforts for the GT3 division and higher. Developed in conjunction with Multimatic Motorsport, the Mustang GT4 boasts a 5.0-liter Coyote V8 built by Ford Performance in Michigan. Other features include Multimatic DSSV dampers, natural fiber body panels, and a GT4-specific aero package.
The series currently known as INDY NXT debuted in 2002 as a feeder series for the then-Indy Racing League, and it took on its current name in 2023 when it was acquired by Penske Entertainment. It has become highly effective at graduating drivers into the premier NTT INDYCAR Series, with future INDYCAR champion Josef Newgarden and fellow stars Patricio O’Ward and Kyle Kirkwood each using INDY NXT titles to springboard their future successes at the highest level.
INDY NXT’s weapon of choice is the Dallara IL-15. It features 450 base horsepower (plus an additional 50 with push-to-pass) coming out of a turbocharged 2.0-liter inline-four. The car received updates in 2021 including a halo for driver safety and new engine tuning by AER to run a full season without a rebuild. The latest update to the car came in 2023, when Firestone took over as tire supplier after Penske’s acquisition of the championship.
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