The 20-year-old Estonian is due to make his first start in the all-electric championship on Saturday as he fills the Envision seat vacated by Sebastien Buemi, who has clashing World Endurance Championship commitments at Spa.
Aron got his first taste of Formula E machinery only weeks ago for a 30-minute rookie session in Misano and has only conducted sim work since, leaving him and the reigning teams' champions with no expectations in Germany.
