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IndyCar Officials Release Renderings of New 2028 with Testing Scheduled to Begin This Weekend

The new chassis is 100 pounds lighter and aims to boost overtaking, with Chevrolet and Honda supplying the 760-horsepower engine formula.

  • On Tuesday, IndyCar revealed the IR-28 chassis in a video narrated by Hollywood actor Matt Damon, billing the new model as "Faster, Lighter and Built to Break Records."
  • Engineered with Dallara, the IR-28 features 2.4-liter twin-turbocharged V6 engines from Chevrolet and Honda delivering up to 760 horsepower, weighing approximately 100 pounds less than current models.
  • The vehicle integrates a new battery-based Energy Storage System from UK-based Helix and BOLD Technology, delivering approximately 14 times the energy storage capacity of previous systems.
  • IndyCar President J. Douglas Boles stated the IR-28 is the "ideal package to move IndyCar forward," while four-time NTT IndyCar Series Champion Alex Palou noted the design feels like a "proper next step."
  • With initial testing beginning this week, the IR-28 will make its competition debut at the start of the 2028 NTT IndyCar Series championship, though work remains before the 2028 season.
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Forbes broke the news in Jersey City, United States on Tuesday, July 28, 2026.
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