Police would like information from anyone who may have seen a person damaging a car in Harrop St between 2pm and 6pm on Monday.
Senior Sergeant Ben Butterfield said a car was "interfered with" on Monday.
Someone jumped on the vehicle's bonnet, smashed its wing mirror and popped its bonnet.
Dunedin police (03) 03 471-4800 or Crimestoppers 0800 555-111.