Stroll, driving for Prema Powerteam, finished 94 points clear of his closest championship rival, Mattia Drudi of the F & M team.
Euronova Racing by Fortec's Ukyo Sasahara, and his replacement, Andrea Fontana were the only other eligible drivers to take an overall victory, with wins at Adria and Magione respectively.
In the concurrent Italian F4 Trophy for drivers over the age of 18, the championship was dominated by Prema Powerteam's Brandon Maïsano.
He finished 176 points clear of his next closest rival, Ali Al-Khalifa, who took a single class win at Magione.
Bold – PoleItalics – Fastest Lap All races were held at Adria International Raceway in Italy.