The 19-year-old, son of former Formula 1 driver Ralf, led from lights-to-flag after penalties from the earlier race promoted him to start in pole position.
ART Grand Prix’s Frederik Vesti finished in second after starting sixth, with third placed Dennis Hauger (Prema) charging through the field from 12th, continuing his fantastic form.
Roman Stanek, driving for Hitech Grand Prix, only managed fourth despite starting in second, with Carlin’s Jonny Edgar in fifth.
Prema Racing driver Arthur Leclerc had an astonishing race, finishing sixth after making up 21 places, having started 27th on the grid.
Johnathan Hoggard, winner of the 2019 Aston Martin Autosport BRDC Young Driver of the Year Award, finished tenth, getting his first F3 points in just his second race for Jenzer Motorsport.
MP Motorsport’s Victor Martins had been set for a podium, but tragically lost power on the penultimate lap, slowing on track and promoting Vesti…