The following year, Pourchaire remained at Formula 4 level, but switched to the ADAC Formula 4 championship as part of the US Racing-CHRS outfit. Pourchaire secured his first podium in the series, with a second place in the second race at Oschersleben. At the Red Bull Ring, Pourchaire claimed another second place in the second race. However a penalty from Red Bull junior and championship rival Dennis Hauger saw Pourchaire take his maiden ADAC F4 win. He would follow up with third place the next day. Pourchaire included a double podium at the German Grand Prix support race, and added two more third-places at Zandvoort. At the Nürburgring, Pourchaire took a double victory that saw him extend his championship lead even further. At the Hockenheimring second round, Pourchaire had a poor showing, colliding with fellow Sauber junior member Arthur Leclerc in the first race and stalled in the second. With Hauger winning all three races, Pourchaire's lead in the championship shrunk from 68 to just a single point. At the Sachsenring, Pourchaire claimed a win in the second race, and took runner-up position in the other two races. This was enough for Pourchaire to claim the championship title by seven points from Hauger.
