Two people have been arrested after leaving their friend to die in a car crash in Melbourne's north on Friday.

Emergency services were called to the scene in Wollert outside Epping about 6am after a passerby found a Subaru Impreza smashed into a pole with one man in the backseat still clinging to life.

Paramedics tried to save the man who had been wearing a seatbelt but he suffered severe injuries and died at the scene on Bindts Road.

On Sunday police announced three arrests in relation to the crash.