IndyCar unveils IR-28 chassis for 2028 season
IndyCar announced that the Dallara‑built IR-28 chassis will replace the DW12 starting in the 2028 NTT IndyCar Series. The new car is roughly 45 kg (about 100 lb) lighter than its predecessor and will be powered by 2.4‑liter twin‑turbo V6 engines from Chevrolet and Honda delivering up to 760 hp. A redesigned hybrid system uses a battery‑based energy‑storage unit that stores around 14‑times more energy than the previous super‑capacitor setup and is lighter by roughly 20‑30 lb.
The IR-28 features an integrated aeroscreen, separate front‑and‑rear wing packages for road courses and superspeedway ovals, electronically adjustable anti‑roll bars and a revised suspension to improve mechanical grip. Safety upgrades include a larger cockpit and reinforced side‑impact protection. IndyCar President J. Douglas Boles said the package is aimed at tighter wheel‑to‑wheel racing and new track‑record attempts, including the long‑standing Indianapolis 500 qualifying record set by Arie Luyendyk in 1996. Initial testing is set to begin the week of the announcement, with drivers praising the car’s aggressive look, improved aerodynamics and potential for faster lap times.
Entities: Chevrolet · Dallara · Doug Boles · Honda · IndyCar · IndyCar (NTT IndyCar Series) · J. Douglas Boles
Claims
What the coverage asserts, and how well corroborated each claim is across sources.
- [● 5 SOURCES] The IR-28 features a new hybrid system roughly 20 lb lighter than the previous configuration. (IndyCar technical details)
- [● 8 SOURCES] The IR-28 uses a 2.4‑liter twin‑turbo V6 engine producing up to 760 hp, supplied by Chevrolet and Honda. (multiple sources)
- [● 7 SOURCES] Initial testing of the IR-28 will begin the week of the announcement. (multiple sources)
- [● 7 SOURCES] The IR-28 is approximately 45 kg (about 100 lb) lighter than the DW12 chassis. (multiple sources)
- [● 7 SOURCES] The IR-28 chassis will replace the Dallara DW12 starting with the 2028 IndyCar season. (multiple sources)
- [● 6 SOURCES] The IR-28 incorporates an integrated aeroscreen as part of its chassis design. (multiple sources)
- [● 8 SOURCES] The IR-28 includes separate front‑and‑rear wing configurations for road courses and ovals. (multiple sources)
- [● 2 SOURCES] IndyCar President Doug Boles said the new chassis will enable tighter wheel‑to‑wheel competition and new track records. (Quote from Doug Boles)
- [● 3 SOURCES] The IR-28 features electronically adjustable anti‑roll bars. (multiple sources)
- [● 3 SOURCES] The IR-28 hybrid system includes a battery‑based energy‑storage system that stores roughly 14 times more energy than the previous super‑capacitor system and is about 20‑30 lb lighter. (multiple sources)