Monger first got behind the wheel of a vehicle at the age of six, when his father, a former kart racer, bought him his first go-kart. with
JHR Developments, as part of the
2016 British Formula 4 Championship. In 2016, Monger joined the
F4 British Championship with
JHR Developments. There he took three podiums and finished 12th in the championship. He remained with the team for the 2017 season. On 16 April 2017, Monger was severely injured during a race at
Donington Park, when he crashed at high speed into the back of Finnish driver
Patrik Pasma; as a result, both of his legs were amputated afterwards. His left leg was amputated high above the knee, leaving him with a short stump of his thigh. His right leg is longer, being amputated below the knee, and the extra length and use of the joint enables him to drive modified cars. Monger was conscious after the car crash. Pasma was not seriously injured in the crash. crash, stickers in support of Monger – such as this one on Geri Nicosia's
Ginetta GT5 Challenge car at
Knockhill in Scotland – were placed on cars on the entire
British Touring Car Championship package.A JustGiving page was set up by Monger's team
JHR Developments to raise money for him, raising over £500,000 in the first 24 hours. Donors included
F1 drivers
Jenson Button,
Lewis Hamilton,
Max Verstappen,
Daniel Ricciardo,
Jolyon Palmer and
Nico Hülkenberg. In June 2017, Monger announced that he would return to competition in November, sharing a
Group CN Ligier JS53 Evo 2-Honda with quadruple amputee Frédéric Sausset in a round of the
V de V Challenge Endurance Proto at the
Autódromo do Estoril in Portugal, as part of a programme with the eventual aim of fielding a team of three disabled drivers at the 2020
Le Mans 24 Hours. In July 2017, Monger made his return to the track when he tested a
Fun Cup race car adapted with additional hand controls by disabled motorsport specialists
Team BRIT at
Brands Hatch, where he regained his race licence. Tatuus-Cosworth MSV 016 which he raced in the
2018 BRDC British Formula 3 Championship, upon his return to motorsports. In February 2018, Monger drove a
single seater racing car for the first time since his crash when he tested a
BRDC British Formula 3 car for the
Carlin racing at
Oulton Park. The following month, he announced that he would be racing for Carlin in the opening meeting of the 2018 BRDC Formula 3 series at the same venue. In order to compete in F3, he and his family had to appeal to the sport's international governing body, the
Fédération Internationale de l'Automobile, to change their regulations, as they had restricted disabled drivers from racing single seaters on the grounds of safety. The FIA decided to lift the ban in December 2017, allowing disabled drivers to race modified single seaters as long as they could pass safety checks. the modifications included moving the brake pedal upwards so he could brake using one of his leg stumps, and replacing the throttle pedal with a lever mounted on the steering wheel. ==Los Angeles 2028==