Born and raised in São Paulo, Brazil, Senna began competitive kart racing at age 13. His first go-kart was built by his father using a lawnmower engine. After twice finishing runner-up at the Karting World Championship, Senna progressed to Formula Ford in 1981, dominating the British and European championships in his debut seasons. He then won the 1983 British Formula Three Championship amidst a close title battle with Martin Brundle, further winning the Macau Grand Prix that year.
Senna was born at 2:35 BRT on March 21, 1960, in the Pro-Matre Maternity Hospital of Santana, a neighborhood of São Paulo. He was the middle child of a wealthy Brazilian family, born to landowner and factory owner Milton Guirado da Silva and his wife Neide Joanna Senna da Silva. Senna was of Italian, Spanish, and Portuguese descent. He was highly athletic, excelling in gymnastics and other sports, and developed an interest in cars and motor racing by the age of four. At the age of seven, Senna first learned to drive a Jeep around his family's farm and also how to change gears without using a clutch.
Senna attended the Colégio Rio Branco in the São Paulo neighborhood of Higienópolis and graduated in 1977. He later enrolled in a college that specialized in business administration but dropped out after three months. In 1981, Senna moved to Eaton, a suburb of Norwich in England, to pursue an open-wheel racing career. As da Silva is the most common Brazilian surname, he adopted his maternal surname, Senna. For 1982, Senna arrived with sponsorship from Banerj and Pool, dominating the British and European Championships, winning 15 of 17 races held at the former.
Senna signed for Toleman in 1984, making his Formula One debut at the Brazilian Grand Prix. After scoring several podium finishes in his rookie season, Senna moved to Lotus in 1985 to replace Nigel Mansell, taking his maiden pole position and victory at the rain-affected Portuguese Grand Prix, a feat he repeated in Belgium. He remained at Lotus for his 1986 and 1987 campaigns, scoring multiple wins in each and finishing third in the latter World Drivers' Championship.
Senna signed for McLaren in 1988 to partner Alain Prost. Together, they won 15 of 16 Grands Prix held that season, driving the Honda-powered MP4/4. Senna took his maiden championship by three points after winning a then-record eight Grands Prix. Their fierce rivalry culminated in title-deciding collisions at Suzuka in 1989 and 1990, despite Prost's move to Ferrari in the latter, with Prost winning the former title and Senna taking the following. Senna took seven victories, including his home Grand Prix in Brazil, as he secured his third title in 1991. The dominant Williams-Renault combination prevailed throughout his remaining two seasons at McLaren, with Senna achieving several race wins in each, including his record-breaking sixth Monaco Grand Prix victory in 1993 on his way to again finishing runner-up to Prost in the championship. Senna negotiated a move to Williams for his 1994 campaign, replacing the retired Prost to partner Damon Hill.
During the 1994 San Marino Grand Prix at Imola, Senna was killed in a crash whilst leading the race, driving the Williams FW16. His state funeral was attended by over a million people. Following subsequent safety reforms, he was the last fatality in the Formula One World Championship until Jules Bianchi in 2014. Senna achieved 41 wins, 65 pole positions, 19 fastest laps, and 80 podiums in Formula One. He remains a legendary figure within motorsport for his raw speed and uncompromising driving style, as well as his philanthropy, and is frequently cited as a national hero of Brazil. He was also widely acclaimed for his wet-weather performances, such as at the 1984 Monaco, 1985 Portuguese, and 1993 European Grands Prix. Senna was inducted into the International Motorsports Hall of Fame in 2000 and into the Automotive Hall of Fame in 2025.
Senna was a devout Catholic and secretly donated millions of U.S. dollars to help poor children. Shortly before his death, he created the framework for an organization dedicated to Brazilian children, which later became the Instituto Ayrton Senna (IAS). The IAS has invested nearly US$80 million over a twelve-year period in social programs and actions in partnership with schools, government, NGOs, and the private sector.
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