Born and raised in Melbourne, Victoria, Piastri is the son of Chris Piastri, founder and owner of HP Tuners, an automotive software company that sponsored his junior formulae career with up to A$6.5 million and served as his kart mechanic. His mother, Nicole Piastri (née MacFadyen), raised him with his three younger sisters—Hattie, Edie, and Mae—in the suburb of Brighton. He claims Italian, Yugoslavian, and Chinese heritage from his father, and Scottish and Irish from his mother.
Piastri began racing competitively aged nine with Remote Control Racing Australia, winning the secondary class of the national championship, before moving into kart racing. He was a protégé of two-time Australian Champion James Sera. Aged 14, he moved with his father to Hertford, England, to continue his international racing career, attending Haileybury's sister school in Hertford Heath—whose alumni include Stirling Moss—as a boarding pupil on a sports scholarship. International karting travel from Stansted Airport across Italy, France, Belgium, Sweden, Spain, and Portugal cost his father around £250,000.
In 2019, nine-time Grand Prix winner Mark Webber and his wife Ann took Piastri under their wing; Webber has served as his manager since, negotiating his move into Formula One.
Piastri joined the Oakleigh Go Kart Racing Club (OGKRC) in Clayton South in 2011, aged 10. He won the 2013 CIK Stars of Karting in the Rookies class. In 2014 he won the OGKRC Championship, City of Melbourne Titles, South Australian Championship, and National Sprint Classic Champion of Champions in Junior Clubman, claiming A$500 for the latter. In 2015 he won the Victorian Championship, OGKRC Junior Top Guns, Gold Coast Race of Stars, and City of Melbourne Titles again, and competed in the IAME International Final at Le Mans, finishing third in X30 Junior from twenty-first on the grid.
From 2015 he moved to Europe, competing with Kosmic and later Ricky Flynn Motorsport. At the 2016 Karting World Championship at Sakhir in OK-Junior, he qualified fourth and finished sixth overall in his final karting appearance.
Piastri made his junior formulae debut in the Formula 4 UAE Championship at Yas Marina with Dragon F4, claiming sixth in his first race. He ended the season sixth overall having contested 11 of 18 races. For 2017 he moved to the F4 British Championship with Arden, owned by Christian Horner—who later revealed he had turned down the chance to sign Piastri to the Red Bull Junior Team. Piastri finished runner-up to second-year Jamie Caroline with six victories from 15 podiums and six pole positions, 65.5 points behind Caroline.
Piastri debuted in the Formula Renault Northern European Cup at the season-ending Hockenheimring round with Arden in 2017, ending twenty-first. He moved to the Eurocup in 2018, still with Arden, achieving his maiden podium—third at Spa-Francorchamps—and closing on 110 points, eighth in the championship.
For 2019 he joined reigning champions R-ace GP under a British licence. His campaign opened at Monza before he took his maiden victory from pole at Silverstone. A title battle with Victor Martins was decided at the final round at Yas Marina: Piastri held off Martins to win the opening race and clinched the championship with fourth in the finale, winning by 7.5 points from seven victories, 11 podiums, and five pole positions. Vroomkart compared his career path to that of Ayrton Senna, having both moved from RC racing to European karting after a transcontinental move.
Now managed by Webber and a member of the Renault Sport Academy, Piastri signed with Prema for 2020 alongside Logan Sargeant and Frederik Vesti. The season was shortened by the COVID-19 pandemic. He won the feature race on debut at Spielberg and maintained his championship lead throughout a tight battle with Sargeant and Théo Pourchaire. At the season-ending Mugello round, carrying a five-place grid penalty, he started sixteenth in the feature and entered the sprint tied with Sargeant on points; Sargeant was eliminated on lap one and Piastri finished seventh to claim the championship by three points from Pourchaire and four from Sargeant. He subsequently became a Formula One test driver for Renault.
Piastri remained with Prema for 2021 in FIA Formula 2, partnering Ferrari Driver Academy member Robert Shwartzman and replacing Mick Schumacher. Despite initially expecting "a very challenging year" with plans to remain for two seasons, he dominated. He took his maiden victory in the second sprint at Sakhir with seven overtakes in the closing seven laps after pitting under a safety car, claiming the lead from Zhou Guanyu on the final lap. He later won feature races at Monza, Sochi, and two at Jeddah, closing the season on 252.5 points—60.5 ahead of Shwartzman—with six wins from 11 podiums and five pole positions, including a record fourth consecutive feature race victory at Yas Island to clinch the title. He became the sixth driver in history to win the GP2/F2 title in their rookie season and the first to win Formula Renault, Formula Three, and Formula Two—or equivalent—championships in successive seasons. The FIA named him Rookie of the Year for 2021.
Piastri joined the Renault Sport Academy in January 2020 after winning the Formula Renault Eurocup. He conducted his first test with Renault after winning the FIA Formula 3 Championship, completing nearly 500 km in the R.S.18 at Sakhir. He was retained at the rebranded Alpine Academy in 2021, testing the A521 at Yas Marina and also at Silverstone and Monza. After his Formula 2 title, he was appointed reserve driver for Alpine's 2022 campaign and completed around 3,000 km of private tests in the A521 throughout the season. He also conducted a private two-day test for McLaren at Paul Ricard in the MCL35M before the São Paulo Grand Prix, and rookie testing in the MCL36 at Barcelona-Catalunya.
In June 2022, Piastri was offered a seat at Williams for 2023 on a two-year loan from Alpine. After Fernando Alonso announced his move to Aston Martin, Alpine announced that Piastri would be his replacement—without comments from Piastri himself. He rejected the announcement two hours later via Twitter, stating he had signed no contract. Team principal Otmar Szafnauer accused him of lacking "integrity as a human being" and threatened legal action. The FIA Contract Recognition Board (CRB) was convened and ruled against Alpine ahead of the Dutch Grand Prix, immediately announcing Piastri would join McLaren. The CRB revealed Piastri had signed his McLaren contract on 4 July—the day after the British Grand Prix—almost a month before Alpine's announcement. Piastri later cited "a breakdown in trust" between himself and Alpine as the reason for his departure.
Piastri joined McLaren to partner Lando Norris, replacing fellow Australian Daniel Ricciardo. On debut at the Bahrain Grand Prix, he qualified eighteenth and retired from twelfth with an electrical issue. His maiden points finish came at his home Grand Prix in Australia, where he finished eighth from sixteenth. Major upgrades for the British Grand Prix saw him qualify third and finish fourth. At the Japanese Grand Prix he finished third from the front row, becoming the first rookie to achieve a podium finish since Lance Stroll in 2017. He took pole for the Qatar Grand Prix sprint and claimed his maiden sprint victory, then finished second in the main race. Piastri finished ninth in the World Drivers' Championship with 97 points and two podiums, 108 behind Norris in sixth.
Piastri's 2024 campaign included a fourth-place finish at Monaco behind Charles Leclerc, second-placed finishes in both sprint and race at the Austrian Grand Prix, and a fractured rib sustained during the British Grand Prix due to an improper seat fit. At the Hungarian Grand Prix, he qualified second before overtaking Norris into the first corner; McLaren controversially allowed Norris to undercut him, then ordered a position swap. Norris let Piastri past with two laps remaining, handing him his maiden victory—the fifth Australian to win a Formula One Grand Prix. In Azerbaijan, he claimed another victory following a race-long battle for the lead with Leclerc. He ended the season fourth in the World Drivers' Championship on 292 points—82 behind runner-up Norris—with two victories from eight podiums, helping McLaren win their first World Constructors' Championship since 1998.
McLaren entered 2025 as title favourites. Three days before the season-opening Australian Grand Prix, McLaren announced a contract extension keeping Piastri until at least the end of 2028. He took his maiden pole position at the Chinese Grand Prix and dominated the race ahead of Norris for his first 2025 victory. He won in Bahrain from pole by a 15-second margin, then in Saudi Arabia to become the first Australian to lead the World Drivers' Championship since 2010. Further victories followed in Miami, Spain, Belgium, and the Dutch Grand Prix—where he took his maiden grand chelem and held off Norris until his teammate suffered a late engine failure, extending his championship advantage to 34 points.
Title momentum shifted in the second half. A crash at the start of the Azerbaijan Grand Prix—stalling and hitting Turn Five after jumping the start—was his first retirement in 45 Grands Prix. First-corner contact with Norris in Singapore dropped him to fourth. A disqualification for skid block wear at Las Vegas levelled him with race-winner Max Verstappen. In Qatar he won the sprint from pole but finished second in the main race after a strategic error allowed Verstappen to win. The Qatar results dropped him to third in the standings, two points behind Verstappen. At the season finale in Abu Dhabi he finished second; Verstappen won from pole with Norris third, meaning Piastri finished the season third, 13 points behind eventual champion Norris. He took seven victories in 2025 and 16 podiums, both records for an Australian driver, and equalled Mark Webber in career victories.
For the 2026 season under new power unit and chassis regulations, Piastri remained at McLaren. At the season-opening Australian Grand Prix he crashed on his reconnaissance lap due to an unexpected engine surge over a kerb and failed to start. At the Chinese Grand Prix he scored points with sixth in the sprint but again failed to start the race due to an electrical issue before the formation lap. He finished second at the Japanese Grand Prix, behind Kimi Antonelli.
Piastri has been consistently noted for composure under pressure. Martin Brundle compared him to Alain Prost after the 2025 Bahrain Grand Prix. Max Verstappen said of him after the Saudi Arabian Grand Prix: "he's very calm in his approach, and I like that. He delivers when he has to, barely makes mistakes." Natalie Pinkham described him as "the cerebral assassin", adding that "he races like he's solving a complex puzzle at 200 mph." His composed demeanour has drawn comparisons to Kimi Räikkönen. Race engineer Tom Stallard has commended his ability to identify flaws in real-time and make improvements without data analysis.
Outside motor racing, Piastri is interested in video games—particularly Call of Duty—and cooking. His racing number is 81, adopted in junior formulae after a rival took number 11. He is a supporter of the Melbourne-based Australian rules football club Richmond. Since 2018 he has been in a relationship with Lily Zneimer, whom he met while at sixth form in England. He moved to Monte Carlo in 2024.
Piastri has received the following honours: FIA Rookie of the Year (Formula One, 2023), Lorenzo Bandini Trophy (2025), Joe Tandy Memorial Trophy (2017), Autosport Awards Rookie of the Year (2020, 2021, 2023), Sir Jack Brabham Award (2020, 2021, 2024), FIA Rookie of the Year in junior formulae (2021), Anthoine Hubert Award (2021), Victorian Sports Awards Young Athlete of the Year (2021), and The Don Award (2025).
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