Overview
- IndyCar this week revealed the IR‑28, a ground‑up Dallara chassis that will replace the DW12 platform and enter competition in the 2028 season.
- The series says the full package is about 100 pounds lighter and pairs a 2.4‑litre twin‑turbo V6 from Chevrolet and Honda with a new battery‑based energy storage system.
- IndyCar has switched from supercapacitors to a BOLD Technology battery and a Helix low‑voltage hybrid unit that the series says stores roughly 14 times more energy than the previous system.
- Initial validation testing is scheduled at Indianapolis on Saturday and Sunday using common test engines, with Alex Palou and Alexander Rossi named to drive early runs.
- IndyCar frames the IR‑28’s revised aerodynamics, integrated aeroscreen and wider cockpit as steps to promote closer overtaking and improve driver safety, but those claims must be confirmed through the ongoing multi‑site test and certification program.