ACT Policing said a Toyota Corolla in the driveway of a Hansel Place, Gordon, home was well alight when they arrived about 3,30am Sunday.

"ACT Fire and Rescue were in attendance and extinguished the blaze a short time later," police said.

"The resident and neighbours reported hearing a loud bang. Police are treating the fire as suspicious."

Police ask anyone in the area at the time who could help with their investigation to contact Crime Stoppers on 1800 333 000 or at www.act.crimestoppers.com.au. Information can be provided anonymously.