The incident occurred shortly after 6pm in an industrial estate in Spreitenbach, the Aargauer Zeitung reported.
For reasons not immediately known, the child fell out of the black Landrover in a roundabout, according to initial information, the newspaper reported online.
The driver of a car following behind was unable to avoid running over the boy.
Suffering serious injuries, the child died on the spot, Roland Pfister, a spokesman for the Aargau cantonal police told 20 Minuten online.
Ambulance attendants and a team from the Rega emergency services attempted in vain to revive the child.
The Landrover was driven by the boy’s father, a 29-year-old Swiss man, who suffered from shock and was taken by firefighters for counselling.
The local prosecutor has opened an investigation to determine the exact causes of the tragedy.
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