The incident occurred around 10.30 PM yesterday when Atul Arora was on his way home after attending a religious function at an ashram near his home, police said.
The teenager was not wearing a helmet and didn't even have a learner's licence, they said, adding he was rushed to a hospital where doctors declared him brought dead.
The impact of the collision was such that the victim flung in the air and suffered severe head injuries, eyewitnesses told the police.
While eyewitnesses claimed the vehicle was a Mercedes car, DCP (Outer) Rishi Pal said police are trying to verify it.
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Police, however, said they have recovered some accessories, including the logo and the grill, from the spot, which suggest that the scooty was hit by the high-end vehicle.
They are visiting the workshops in the area and questioning their owners to find out if a Mercedes car had come to them for repair.
Police are scanning CCTV footage from the area to identify the driver.
Atul, used to stay with his family, including two sisters, elder to him, in the Paschim Vihar area. He had recently cleared his Class XI exams and today was supposed to be his first day in Class XII, police said.
Atul's father works with the Delhi Development Authority and suffers from partial paralysis. His mother is a teacher.
Atul was returning home after dropping off his friend when the car rammed his scooty, police said.
A case under relevant sections of IPC has been registered at the Mianwali Nagar police station and investigation is on, they said.