Mercedes-Benz in Formula One

Mercedes-Benz, a German luxury automotive brand of the Mercedes-Benz Group, has been involved in Formula One as both team owner and engine manufacturer for various periods since 1954. The current Mercedes-AMG Petronas F1 Team is based in Brackley, England, and holds a German racing licence. An announcement was made in December 2020 that Ineos planned to take a one third equal ownership stake alongside the Mercedes-Benz Group and Toto Wolff; this came into effect on 25 January 2022. Mercedes-branded teams are often referred to by the nickname, the "Silver Arrows" (German: Silberpfeile).

Before the Second World War, Mercedes-Benz competed in the European Championship, winning three titles. The marque debuted in Formula One in 1954. After winning their first race at the 1954 French Grand Prix, driver Juan Manuel Fangio won another three Grands Prix to win the 1954 Drivers' Championship and repeated this success in 1955. Despite winning two Drivers' Championships, Mercedes-Benz withdrew from motor racing after 1955 in response to the 1955 Le Mans disaster.

Mercedes returned to Formula One in 1994 as an engine manufacturer in association with Ilmor, a British independent high-performance autosport engineering company, which developed their engines. The company won one constructors' title and three drivers' titles in a works partnership with McLaren which lasted until 2009. In 2005, Ilmor was rebranded as Mercedes AMG High Performance Powertrains. In 2010, the company bought the Brawn GP team, rebranding it as Mercedes. Since a major rule shake-up in 2014, which required the use of turbochargers and hybrid electric engines, Mercedes has become one of the most successful teams in Formula One history, winning seven consecutive Drivers' titles from 2014 to 2020 and eight consecutive Constructors' titles from 2014 to 2021, both records. The manufacturer has also collected more than 200 wins as an engine supplier and is ranked second in Formula One history. Twelve Constructors' and thirteen Drivers' Championships have been won with Mercedes-Benz engines.

Mercedes-Benz formerly competed in Grand Prix motor racing in the 1930s, when the Silver Arrows dominated the races alongside rivals Auto Union. Both teams were heavily funded by the Nazi regime, winning all European Grand Prix Championships after 1934, of which Rudolf Caracciola won three for Mercedes-Benz.

In 1954, Mercedes-Benz returned to what was now known as Formula One (a World Championship having been established in 1950) under the leadership of Alfred Neubauer, using the technologically advanced Mercedes-Benz W196. The car was run in both the conventional open-wheeled configuration and a streamlined form, which featured covered wheels and wider bodywork. Juan Manuel Fangio, the 1951 champion, transferred mid-season from Maserati to Mercedes-Benz for their debut at the French Grand Prix on 4 July 1954. The team had immediate success and recorded a 1–2 victory with Fangio and Karl Kling, as well as the fastest lap (Hans Herrmann). Fangio went on to win three more races in 1954, winning the championship.

The success continued into the 1955 season, with Mercedes-Benz developing the W196 throughout the year. Mercedes-Benz again dominated the season, with Fangio taking four races, and his new teammate Stirling Moss winning the British Grand Prix. Fangio and Moss finished first and second in that year's championship. The 1955 disaster at the 24 Hours of Le Mans on 11 June, which killed Mercedes-Benz sportscar driver Pierre Levegh and more than 80 spectators led to the cancellations of the French, German, Spanish, and Swiss Grands Prix. At the end of the season, the team withdrew from motor sport, including Formula One. During this first period of the team's participation in Formula One, Mercedes won 9 races in total, including three Grands Prix (the 1954 French Grand Prix, the 1954 Italian Grand Prix and the 1955 Italian Grand Prix) won by the streamlined "Type Monza", making them the only three races won by a closed-wheel car in Formula One history.

Before the start of the 2010 season Mercedes-Benz's parent company Daimler AG bought a minority stake (45.1%) in the Brawn GP team with Aabar Investments purchasing 30% on 16 November 2009. Following the purchase of the team, as well as a sponsorship deal with Petronas, the team was rebranded as Mercedes GP Petronas Formula One Team, and Mercedes would now compete in the constructors' championship for the first time. Ross Brawn continued his duties as team principal and the team retained its base and workforce in the 60,000 m² (650,000 sq ft) Brackley facility, close to the Mercedes-Benz Formula One engine plant (formerly Ilmor Engineering) in Brixworth.

The team has a complex history and its entry can be traced back to Tyrrell Racing, who competed as a constructor from 1970 until 1998, until being bought by British American Tobacco at the end of 1997 so its entry could be transferred to the then new constructor British American Racing (BAR) in 1999. BAR, who had formed a partnership with Honda, eventually became Honda Racing F1 Team in 2006 when British American Tobacco withdrew from the sport. It again changed hands in 2008, when Honda withdrew, and was purchased by the team's management, naming it Brawn GP after team principal Ross Brawn. Brawn used engines from Mercedes-Benz High Performance Engines, and despite running on a low budget, Jenson Button won six of the first seven races and ultimately the 2009 Drivers' Championship, while Brawn won the Constructors' Championship. It was the first time in the sport's sixty-year history that a team won both titles in its maiden season.