A teenager awaiting sentence for driving a fake emergency services truck along some of Melbourne’s busiest roads faces new charges, for allegedly deceiving a car dealership to buy another vehicle.

The 18-year-old, who cannot be identified, was to be sentenced on 30 charges in a children’s court on Monday for modifying a white truck, fitting it with flashing lights and sirens and then speeding in it through parts of inner Melbourne in 2017.

The teenager's first fake ambulance. Credit:Seven News

A previous court hearing was told he drove the modified truck along Hoddle Street, Punt Road, St Kilda Road and through the Burnley Tunnel across several days in September and October of that year.

He was 16 at the time and had only just got his learner driver’s permit.