Andretti Autosport

The team was founded in 1993 by Barry Green and Gerald Forsythe, initially fielding Atlantic entries before moving to the CART Indy Car World Series in 1994 with Jacques Villeneuve as driver. Villeneuve finished second at the 1994 Indianapolis 500 and won one race at Road America as a rookie. Green and Forsythe parted ways after 1994, with Green renaming the outfit Team Green and his brother Kim joining as team manager.

In 1995 Villeneuve won both the CART championship and the Indianapolis 500 — a double that established the team as a front-rank CART operation. After Villeneuve departed to Formula One, the team cycled through drivers before signing Dario Franchitti and Paul Tracy as a two-car lineup in 1998 under KOOL cigarettes sponsorship, racing as Team KOOL Green.

Michael Andretti purchased a stake in Team Green in 2002 and the organization became Andretti Green Racing, transitioning from CART to the rival Indy Racing League (now IndyCar Series) in 2003. The new-era lineup paired Tony Kanaan and Dario Franchitti with Michael Andretti, who retired after the 2003 Indianapolis 500. Bryan Herta joined as the fourth full-time driver beginning in 2004, a role that gave the team four competitive entries.

The 2004 and 2005 seasons were the team's finest period. Tony Kanaan won the 2004 IndyCar Series championship — his only title — while Dan Wheldon, who replaced the retired Andretti, won the 2005 championship and the 2005 Indianapolis 500. The team demonstrated its depth at the 2005 Grand Prix of St. Petersburg, where all four of its cars — Wheldon, Kanaan, Franchitti, and Herta — finished first, second, third, and fourth. Bryan Herta's role as the team's fourth entry was central to this period of four-car dominance.

Marco Andretti joined the team in 2006 after Wheldon departed to Chip Ganassi Racing. At the 2006 Indianapolis 500, Michael Andretti came out of retirement to qualify alongside his son; Marco was passed just before the finish line by Sam Hornish Jr. in one of the closest finishes in race history, ultimately placing second. Danica Patrick joined the team for the 2007 season, replacing Bryan Herta, who moved to the team's new American Le Mans Series Acura LMP2 program.

Franchitti won the 2007 Indianapolis 500 and the 2007 IRL championship before departing to NASCAR with Chip Ganassi Racing. Ryan Hunter-Reay joined in 2010 after the team was fully restructured under Michael Andretti's sole ownership as Andretti Autosport.

Michael Andretti took full ownership and renamed the team Andretti Autosport in November 2009. Hunter-Reay won the 2012 IndyCar Series championship in dramatic fashion: Will Power led by 17 points heading into the season finale at Fontana, but a crash on lap 66 while the two raced side by side handed Hunter-Reay the title with a fourth-place finish.

The team has won the Indianapolis 500 six times total: with Villeneuve in 1995, Wheldon in 2005, Franchitti in 2007, Hunter-Reay in 2014, Alexander Rossi in 2016, and Takuma Sato in 2017. At the 2014 Indy 500, three of the four full-time Andretti drivers finished in the top six.

Andretti entered the FIA Formula E World Championship from its inaugural 2014–15 season. Jake Dennis won the 2022–23 Drivers' Championship for the team, giving the organization its first Formula E title. The team rebranded to Andretti Global in September 2023 in pursuit of a Formula One entry, eventually partnering with General Motors under the Cadillac name. The FIA approved the Andretti-GM bid to enter Formula One in 2026, with Ferrari supplying engines on a temporary basis pending GM's own power unit program.

Andretti Green Racing's four-car period from 2003 to 2007 produced back-to-back IndyCar championships (Kanaan 2004, Wheldon 2005) and defined the team's identity as a meritocratic operation capable of developing multiple championship-caliber drivers simultaneously. Bryan Herta's contribution as the team's fourth-car anchor during this era was a significant element of its depth. The lineage from Team KOOL Green through Andretti Green Racing to Andretti Autosport and Andretti Global represents one of the most continuous winning threads in American open-wheel racing.