Ali Bahramzadeh, 23, was driving without insurance when he hit a moped with his mother’s car and then fled the scene.
The moped driver died later from severe head injuries.
Ali Bahramzadeh, pleaded guilty and was jailed for a year at Wood Green Crown court.
He was also banned from driving for 2 years and six months.
Without the knowledge of his mother, Ali Bahramzadeh took her car for a spin with his friends, they were on Ashurst road driving towards a roundabout.
Alfie O’Keefe-Hedges, 18, was on his moped driving toward the same roundabout from the opposite direction.
Ali Bahramzadeh failed to stop at the roundabout and crashed into Alfie.
Ali Bahramzadeh and his friends fled the scene after the accident.
Alfie was treated by ambulance service at the scene and was taken to a hospital where he later died.
Severe head injuries were the cause of death a post mortem revealed.
A few hours after the accident, Ali Bahramzadeh walked into a police station and accepted he was the driver of the car involved in the crash.
He was arrested and charged.
The passengers of the vehicle have not yet been traced.
Detective Constable Rob Simpson, of the Met’s Serious Collision Investigation Unit, said: “We can only hope this sentence brings some small comfort to Alfie’s family, who have been devastated by his loss following Bahramzadeh’s actions. It will hopefully be some reminder to anyone who is driving to pay appropriate care and attention to avoid needless incidents such as this.”