Cadillac in Formula One

American car manufacturer General Motors (GM) is contracted to compete as a Formula One constructor under the Cadillac brand as Cadillac Formula 1 Team, beginning with the 2026 season, and is expected to become a power unit manufacturer starting in 2029. GM will collaborate with American motorsports organization TWG Motorsports through the latter's British subsidiary, TWG Cadillac Formula 1 Team Ltd.

Cadillac will become the first new, independent constructor to join the grid since Haas in 2016. The project has three bases in the United States—in Indiana, North Carolina, and Michigan—and one in the United Kingdom. The engine department will be based in North Carolina.

Several GM marques participated in the Indianapolis 500 when it counted towards the FIA World Championship of Drivers from 1950 to 1960:

In January 2023, General Motors (GM) and the Michael Andretti–led Andretti Global announced their intention to enter GM's Cadillac brand into the Formula One World Championship. The FIA approved their bid but the Formula One Group vetoed it, explaining that it would reconsider its decision if GM agreed to manufacture Formula One engines. Following the rejection, Andretti continued to build up the team and operations using Toyota's wind tunnel in Cologne, which McLaren had recently vacated.

In November 2024, following extended disputes between the Formula One Group and Michael Andretti, Andretti Global sponsor TWG Global—led by Mark Walter—announced that it was taking over the operation from the Andretti family. Michael Andretti remained as an advisor, while his father, Mario, agreed to serve on the board of directors. The team renamed its British subsidiary from Andretti Racing to Cadillac, and eventually TWG Cadillac Formula 1 Team Ltd.

That month, the Formula One Group tentatively approved Cadillac as a new constructor for the 2026 season. The entry received its final approval in March 2025, in time for Cadillac to sign the latest Concorde Agreement. Cadillac will be the first debutant Formula One venture since Haas in 2016. GM paid an expansion fee of US$450 million, over twice as much as originally demanded. In addition, GM announced that it would begin manufacturing engines for Cadillac for the 2029 season; until then, the team will compete with Ferrari engines. In November, Cadillac made its testing debut at Imola with Sergio Pérez driving a blank-liveried Ferrari SF-23.

In December 2024, Cadillac hired the former Virgin and Marussia CEO, Graeme Lowdon, as team principal. Lowdon is overseen by Dan Towriss, the CEO of TWG Motorsports. The team has hired several alumni of "Team Enstone" in senior roles, including: Formula One chief technical officer Pat Symonds, operations officer Rob White, technical director Nick Chester, aerodynamicist Jon Tomlinson, and advisor Naoki Tokunaga.

In March 2025, Lowdon said that he intended to hire drivers based on merit, although he "[saw] no reason why an American driver [could not] be selected on merit". Mario Andretti had stated that the team planned to pair an experienced driver with a younger American driver, who would likely be Andretti Global driver Colton Herta. Five months later, Cadillac announced former World Drivers' Championship runners-up Sergio Pérez and Valtteri Bottas as their inaugural driver line-up, citing their experience over American options such as Herta and Josef Newgarden. Herta later agreed to become a test driver and depart IndyCar for FIA Formula 2 in 2026 with support from Cadillac. Simon Pagenaud, Pietro Fittipaldi, and Charlie Eastwood also joined the team as simulator drivers.