Enlarge / GM says the only way Cadillac enters F1 is in the back of an Andretti car. (credit: Cadillac)

At the start of the year, we got the surprising news that Andretti Global was partnering with Cadillac to try to field a team in Formula 1. That has been a contentious process, exposing a rift between the sport’s stakeholders, some of whom aren’t keen to add a new fish to the pond.

But on Tuesday, the Andretti Cadillac program got even more serious with the news that General Motors, which owns Cadillac, has now registered as an official F1 powertrain constructor—although only from the 2028 season.

“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.”