It happened Tuesday afternoon.
Police say the victim, 49- year-old Dennis Gandarilla, met the driver at the intersection of East 156th Street and Kelly Street in Longwood to buy a jacket.
The driver took off with Gandarilla hanging off the passenger side of the Jeep, dragging him for four blocks before he was thrown to the ground.
Gandarilla died at the hospital.
The driver fled the location northbound on Prospect Avenue, police say.
He is described as a white male, approximately 40-years of age.