The Formula Renault Eurocup graduate was found to have driven more than ten car lengths behind the safety car – brought out following a mechanical failure for poleman Jonny Edgar – prior to the Aston Martin turning its lights out for the restart.
Colombo held his lead all the way to the flag, winning on the road by 1.8s over Hitech driver Iwasa, only for the Campos driver’s penalty to demote him to seventh.
Iwasa therefore takes his maiden FIA F3 win, becoming the first Japanese driver to take to the top step in the category since AlphaTauri Formula 1 driver Yuki Tsunoda’s victory at Monza in 2019.
The 19-year-old had never finished higher than the sixth place he’d scored in the previous race at Silverstone but, after qualifying tenth, started the partially-reversed first race from third and held his position behind Colombo after Edgar’s retirement.
Olli Caldwell (Prema) is moved up into second place, with Logan Sargeant (Charouz) taking third and his…