Vergne, who claimed a record 15th Formula E pole to draw clear of Sebastien Buemi, had led the majority of the first half of the race and had largely been undisturbed at the front until Evans picked up his second attack mode activation on lap 25.
Evans used his extra 30kW of power to scythe away at the gap to Vergne, with the Jaguar driver bringing it down to half a second as his attack mode elapsed.
