PSA Group in the context of Fiat Chrysler Automobiles

FCA US, LLC, doing business as Stellantis North America and known historically as Chrysler (/ˈkraɪslər/ KRY-slər), is one of the "Big Three" automobile manufacturers in the United States, headquartered in Auburn Hills, Michigan. It is the American subsidiary of the multinational automotive company Stellantis. Stellantis North America sells vehicles worldwide under the Chrysler, Dodge, Jeep, and Ram Trucks nameplates. It also includes Mopar, its automotive parts and accessories division, and SRT, its performance automobile division. The division also distributes Alfa Romeo, Fiat, and Maserati vehicles in North America.

The original Chrysler Corporation was founded in 1925 by Walter Chrysler from the remains of the Maxwell Motor Company. In 1998, it merged with Daimler-Benz, which renamed itself DaimlerChrysler but in 2007 sold off its Chrysler stake. The company operated as Chrysler LLC through 2009, then as Chrysler Group LLC. In 2014, it was acquired by Fiat S.p.A.; it subsequently operated as a subsidiary of the new Fiat Chrysler Automobiles (FCA), then as a subsidiary of Stellantis, the company formed from the 2021 merger of FCA and PSA Group (Peugeot Société Anonyme).

Stellantis N.V. is a multinational automotive manufacturing corporation formed in 2021 through the merger of the French PSA Group and Fiat Chrysler Automobiles (FCA), which was itself created by the merger of Italy's Fiat and the US-based Chrysler, completed in stages between 2009 and 2014. Stellantis is headquartered in Hoofddorp, Netherlands, while the CEO now operates from Auburn Hills, Michigan.

As of 2025, Stellantis ranked as the world's fifth-largest automaker by global sales volume, behind Toyota, Volkswagen Group, Hyundai Motor Group, and the Renault–Nissan–Mitsubishi Alliance. That same year, it placed 61st on the Forbes Global 2000 list of the world’s largest public companies. Stellantis shares are listed on the Euronext Paris, Borsa Italiana, and New York Stock Exchange.

Opel Automobile GmbH (German pronunciation: [ˈoːpl̩]), usually shortened to Opel, is a German automobile manufacturer which has been a subsidiary of Stellantis since January 16, 2021. It was owned by the American automaker General Motors from 1929 until 2017 and the PSA Group prior to its merger with Fiat Chrysler Automobiles to form Stellantis in 2021. Most of the Opel lineup is marketed under the Vauxhall brand in the United Kingdom since the 1980s. Some Opel vehicles were badge-engineered in Australia under the Holden brand until 2020, in North America and China under the Buick, Saturn (until 2010), and Cadillac brands, and in South America under the Chevrolet brand.

Opel traces its roots to a sewing machine manufacturer founded by Adam Opel in 1862 in Rüsselsheim am Main. The company began manufacturing bicycles in 1886 and produced its first automobile in 1899. With the Opel RAK program, the world's first rocket program, under the leadership of Fritz von Opel, the company played an important role in the history of aviation and spaceflight: Various land speed records were achieved, and the world's first rocket-powered flights were performed in 1928 and 1929. After listing on the stock market in 1929, General Motors took a majority stake in Opel and then full control in 1931, making the automaker a wholly owned subsidiary, establishing an American ownership of the German automaker for nearly 90 years. Together with British manufacturer Vauxhall Motors, which GM had acquired in 1925, the two companies formed the backbone of GM's European operations – later merged formally in the 1980s as General Motors Europe.

Citroën (French pronunciation: [sitʁɔɛn] ) is a French automobile company. The "Automobiles Citroën" manufacturing company was founded on 4 June 1919 by André Citroën. Citroën has been owned by Stellantis since 2021 and previously was part of the PSA Group after Peugeot acquired 89.95% share in 1976. Citroën's head office is located in the Stellantis Poissy Plant in Saint-Ouen-sur-Seine since 2021 (previously in Rueil-Malmaison) and its offices studies and research in Vélizy-Villacoublay, Poissy (CEMR), Carrières-sous-Poissy and Sochaux-Montbéliard.

In 1934, the firm established its reputation for innovative technology with the Traction Avant. This was the world's first car to be mass-produced with front-wheel drive and four-wheel independent suspension, as well as unibody construction, omitting a separate chassis, and instead using the body of the car itself as its main load-bearing structure.

Vauxhall Motors Limited is a British car company headquartered in Coventry, West Midlands, England. Vauxhall became a subsidiary of PSA Group in 2017, and later, its successor Stellantis in January 2021, having previously been owned by General Motors since 1925.

Vauxhall is one of the oldest established vehicle manufacturers and distribution companies in the United Kingdom. It sells passenger cars, and electric and light commercial vehicles under the Vauxhall marque nationally, and used to sell vans, buses, and trucks under the Bedford brand.