Police want to speak with anyone who may have witnessed a car fire in Macgregor on Sunday night.

Officers were called to Bowden Place at about 7.30pm to find a Holden Rodeo on fire.

The flames were extinguished by ACT Fire and Rescue, but investigators were unable to determine the point of ignition.

The blaze is now under investigation by police.

People who may have seen the fire or any suspicious behaviour in the area are asked to call Crime Stoppers on on 1800 333 000 or to go act.crimestoppers.com.au