[2] In the opening round in the French F4 series at Nogaro, he won two of the three races, along with two poles and all three fastest laps, allowing him to take the lead in the championship.

This victory made David the youngest driver to win any FIA Formula 4 category at the age of 15 with a total of 280 points.

[3] Driving as a guest driver for R-ace GP in the 2019 ADAC Formula 4 Championship at Circuit Zandvoort and Nürburgring.

David's best finish was 7th at the final race in Nürburgring, he then returned to the French F4 Championship where he was competing in full time.

[4] In October 2019, David partook in the post-season test at Yas Marina with R-ace GP and MP Motorsport.

[6] Speaking of that opportunity before the season, Renault Academy boss Mia Sharizman remarked that the series was "an excellent platform to develop and test Hadrien David's talent".

In 2021 the Frenchman competes in the Formula Regional European Championship for R-ace GP, alongside Léna Bühler, Zane Maloney and fellow countryman Isack Hadjar.

[9] At the start of the season, he partook in the Formula Regional Asian Championship for the first two rounds,[10] taking two victories and placing 9th in the standings.

However, he made a one-off return in the championship with ART Grand Prix for the Spa-Francorchamps as driver Charlie Wurz was having laryngitis.

[13] He again returned to the championship with Monolite Racing, to replace an absent Kirill Smal at the Red Bull Ring round.