The group allegedly used a stolen pass to enter a gym in Wantirna about 11.30pm last night.
There, they allegedly took the keys to a gym patron’s Mazda 3.
Police rushed to the gym car park where they arrested one of the males.
The remaining offenders avoided capture, allegedly dropping a machete as they fled in the stolen Mazda.
The car was then tracked to the Dandenong area about 1am, where it was travelling southbound on Eastlink.
The Mazda then began driving in convoy with another allegedly stolen car, both speeding through Seaford.
Stop sticks were deployed on Cranbourne Road.
The Mazda continued to drive and was allegedly dumped near Moate Street a short time later.
Officers searched the area and arrested two males, one of whom had climbed onto a nearby roof.
“We heard the commotion of ‘get on the ground, get on the ground’,” a nearby resident said.
“For it to happen out the front of home, yeah, it was a little bit scary.”
The second car, a blue Toyota Echo was dumped in Kerry Street, Langwarrin, where three males allegedly tried to flee on foot.
They were quickly arrested at the scene.
The Toyota was allegedly stolen from Mont Albert earlier this week.
The six teens are aged between 15 and 18 and are mostly from the Boroondara area.
They have all been interviewed and released pending summons.
The investigation remains ongoing.