Chevrolet, Honda expected to continue as IndyCar engine suppliers beyond 2026

Penske Entertainment has agreed terms with Chevrolet and Honda for the auto makers to remain as engine suppliers in the IndyCar Series.

Multiple sources have told RACER an announcement confirming the extensions to stay beyond 2026 is being readied, and will herald an end to years of speculation regarding their intentions to continue in the series.

The longstanding supporters of IndyCar will continue supplying their custom 2.2-liter twin-turbo hybrid V6 motors to cover the gap year in 2027 before switching to brand-new 2.4-liter twin-turbo hybrid V6s in 2028 to power Dallara’s upcoming IR28 chassis.

Although the length of the contracts are unknown, most of the previous arrangements have been three years in duration. With the unique need to continue using the 2.2s next season after the new car and engine formula was deferred by one year, it would not be a surprise to learn the contracts handle 2027’s swansong for the 2.2s and three additional years from 2028-2030 for the 2.4s.

For Penske Entertainment, which is co-owned by Fox Corporation, the signing of Chevrolet and Honda also represents the completion of its 2028 engine regulations. The extended efforts to cross the 2.4's technical finish line allows Chevrolet, through Ilmor Engineering, and Honda, through Honda Racing Corporation U.S., to move swiftly into completing their new designs and producing motors to use in initial Dallara IR28 testing later this year.

The ability to retain Chevy and Honda was reinforced through a unique offering which was first reported at the close of 2025 in which Penske Entertainment is granting each company a membership in its charter program.

As with IndyCar’s 10 full-time teams from 2024 that were awarded a total of 25 charters in preparation for the 2025 season, RACER understands Chevrolet and Honda will be issued single charters of their own to use and field one-car factory efforts, along with other rights.