The victim was identified as Manjeet alias Johnny. The accident happened on Tuesday and the victim succumbed to injuries today.
Police said that the juvenile is a student of Class XII at a private school and he had taken out his father's Hyundai Santro for a drive.
Manjeet was crossing the road near sector 11 traffic signal when he was hit by the juvenile, who it is suspected was driving the vehicle at a high speed, police said.
The deceased worked as a cook at a local eatery.
The juvenile was apprehended and his father has also been booked under the relevant sections of the Motor Vehicles Act for allowing a minor to drive a vehicle.