GM registers as Formula 1 power unit manufacturer: To supply engine to Andretti Cadillac_INSIGHT

General Motors has announced that it has formally registered with the FIA as a Formula 1 power unit manufacturer starting in the 2028 season. The move means that it will be able to supply power units, which comprise the engine, exhaust, turbocharger, and other vital components to the Andretti Cadillac F1 Team, which is all set to enter the motorsport as the 11th team from 2025-26 season onwards.
“We are thrilled that our new Andretti Cadillac F1 entry will be powered by a GM power unit,” said GM President Mark Reuss. “With our deep engineering and racing expertise, we’re confident we’ll develop a successful power unit for the series, and position Andretti Cadillac as a true works team. We will run with the very best, at the highest levels, with passion and integrity that will help elevate the sport for race fans around the world,” said General Motors in a press release.

Cadillac most recently developed the 5.5-litre DOHC V8 powertrain used in the 2023 IMSA and WEC seasons. With this powertrain, Cadillac Racing secured a podium finish at the 24 Hours of Le Mans and swept top championship honors for the inaugural IMSA Grand Touring Prototype season.
It should be noted that the American team would need a customer deal in place for its initial entry into F1 up until the GM power unit is ready. Andretti was earlier expected to be supplied engines by Renault, however, the the pre-contract the team had with the French manufacturer had lapsed. Andretti Cadillac F1 Team would have to request a supply from one of the engine manufacturers that is supplying the fewest customer teams, which leaves Honda and Renault on the table, with both currently only committed to supply one team each.