Residents of several apartments in St Dominic Street, Valletta were forced to get out of bed in a rush on Sunday after Civil Protection officers ordered their evacuation because of a fire.
The blaze was reported at 3.30am and involved a Mercedes Benz car parked just outside.
The blaze spread to a Citroen.
Both cars were extensively damaged but no one was injured.
Doors and windows on the facade of the apartment block were also damaged.