Jack Aitken secured three championship titles in 2015, winning both the Eurocup Formula Renault 2.0 and Formula Renault 2.0 Alps, as well as the Pro Mazda Winterfest where he achieved three victories in five races. This followed his successful car racing debut in 2012 in the Intersteps Championship, where he earned two wins and a third-place overall finish. Aitken continued to demonstrate his prowess in open-wheel racing, placing second in the Formula Renault 2.0 NEC in 2013, solidifying his trajectory as a formidable talent in motorsport. Aitken further developed his career in the GP3 Series, securing a victory at Spa-Francorchamps in 2016 and finishing fifth in the standings, followed by a second-place overall finish in 2017.
He then progressed to the FIA Formula 2 Championship from 2018 to 2020, achieving multiple wins and podium finishes, culminating in a fifth-place overall finish in 2019. A pivotal moment in his career came with his Formula One debut at the 2020 Sakhir Grand Prix, where he served as a reserve driver for Williams Racing. Replacing George Russell, Aitken qualified 18th and finished 16th, showcasing his capability at the sport’s highest echelon. He continued his role as a reserve driver for Williams through 2022.
Aitken continued his DTM campaign in 2024, finishing eighth in the championship standings. His exceptional performance in the 2025 IMSA SportsCar Championship – GTP class resulted in a second-place overall finish, highlighted by two pivotal wins: the TireRack.com Battle on the Bricks at Indianapolis Motor Speedway and the Motul Petit Le Mans at Michelin Raceway Road Atlanta. These achievements underscore his sustained success and adaptability across varied and highly competitive racing disciplines.