Carlos Sainz Vázquez de Castro, known as Carlos Sainz Jr. was born in Madrid on September 1, 1994. Thanks to the passion handed down by the well-known rally driver Carlos Sainz, the Spaniard made his debut in the world of Motorsport starting his path with karts, in 2005. Among his successes he boasts that of the prestigious Monaco Kart Cup race in 2009. In 2010 Carlos joined the Red Bull Junior Team, and at the same time took part in the Formula BMW European Championship with a car from the EuroInternational team, obtaining the Rookie Cup title and winning the prestigious Macau Grand Prix.
In 2011 he won the Northern European Cup of the Formula Renault 2.0 and finished second in the Eurocup. The following year he raced with the Carlin Motorsport team car in the British Formula 3 championship, obtaining four victories and sixth place in the overall standings, in the European one of the same Formula, obtaining the fifth position in the standings, and in the Formula 3 Euro Series, obtaining the ninth position. In 2013 Carlos races in the GP3 championship with a car of the MW Arden team, obtaining two podiums and the tenth place in the general classification, while in 2014 he wins the Formula Renault 3.5 Series with a car of the DAMS team. Meanwhile, in 2013 he took part in the Silverstone tests at the wheel of both Toro Rosso and Red Bull, while in November 2014 he took part in the Abu Dhabi tests driving a Red Bull RB10.
On 28 November 2014, Scuderia Toro Rosso announced his engagement for the 2015 Formula 1 World Championship. Sainz proved competitive at his debut Grand Prix in Australia, but ended the race due to pit-stop problems. in ninth place, obtaining the first world championship points with this placement. In Malaysia he gets better, finishing eighth, while in China he does not earn any points, nor in Bahrain where he retires due to a mechanical breakdown. In Spain he finished ninth, after reaching the fifth position in qualifying, while in Monaco he finished tenth after starting from the pit lane. From Canada to Monza the Spaniard does not get any points, thanks to the many withdrawals. In Singapore he finishes ninth, behind his teammate Max Verstappen, then in Japan he finishes tenth and in the final of the season he only gets a points finish, in the United States, where he closes in seventh position. He ends the season in fifteenth place, with 18 points scored.
In 2016 the season got off to a good start: in Australia he finished ninth, after starting from seventh position on the starting grid. In Bahrain he retires, but in China he returns to the points, thanks to the ninth place. After a retirement in Russia, in Spain he finishes in sixth place, after being in third position in the very first laps. In Monaco he finishes sixth, while in Canada he finishes ninth, after starting back. After a retirement in the European Grand Prix, the Spanish rider gets three eighth places in Austria, Great Britain and Hungary that bring him to tenth position in the world championship. In Germany he finishes fourteenth. In the last part of the world championship he gets only two points finishes: two sixth places, in the United States and in Brazil.
In 2017 Sainz was confirmed by Toro Rosso, with whom he obtained several points finishes (for a total of 48), including a fourth place in Singapore, but on October 7th his move to Renault for the last four Grands Prix was announced of the season. At his first Grand Prix with the French team, Sainz immediately scores points; he is instead forced to retire due to technical problems in the following race. He closes in ninth position in the world championship, with 54 points.
The 2018 season starts positively for the Spaniard, with tenth place in Australia. After the eleventh place in Bahrain, he consistently scores points in subsequent tests, obtaining a fifth place in the Azerbaijani Grand Prix, which is his best result of the season. He concludes the season with a moderate success, which gives Renault the fourth position in the constructors' classification: however, already in the summer break the Iberian driver, after being forced to leave at the end of the year due to the arrival of Ricciardo in Renault, signs an agreement with McLaren, where he replaces the retired Alonso.
Despite some negative results in his first appearances with the new team, Sainz's good performance allows McLaren to consolidate their fourth place in the constructors' standings of the 2019 season. The same Iberian driver culminates his year with his first career podium, as well as the first for McLaren since 2014, or a third position at the Brazilian Grand Prix, thanks to a penalty imposed on Lewis Hamilton.
While respecting the agreements with McLaren also for the 2020 season, initially postponed due to the Covid-19 pandemic, on May 14, 2020 the Spaniard signs a two-year contract with Ferrari, valid from 2021, replacing Vettel. The last season in the British team opens with a convincing fifth place in the Austrian Grand Prix, the best result of the Iberian's career on this track. Still in the same circuit, on the occasion of the following Styrian Grand Prix, Sainz sets his first fastest lap of his career, setting a new track time record.
On September 6, 2020, Sainz won his first second place in his career, in the daring Italian Grand Prix, bringing McLaren back to the Monza podium eight years after the last time. In 2021 he became a driver of the Ferrari team, and on January 28th Sainz drove the SF71H used in the 2018 Formula 1 world championship in Fiorano for the first time for the first seasonal tests.