The Venturi driver had enjoyed a strong drive through the lower end of the points to claim fifth once the results were taken from the end of the 29th lap owing to the Turn 6 crashes for Nick Cassidy, Lucas di Grassi and Vandoorne that brought out a red flag.
But under a brief full course yellow ahead of the race stoppage, Mortara was found to have surpassed the maximum speeds required under FCY conditions and thus takes a five-second penalty.
