A crew from Bracknell fire station were called to Turnberry, in Great Hollands, Bracknell at about 1.30am.
A Vauxhall Corsa had been set on fire and a second engine was called to put out the blaze after it spread to a nearby shed.
A white van and another car next to the burning vehicle were also damaged by the heat from the flames.
The fire was put out at about 3am and police were also at the scene.
The incident is being treated as suspicious.