 The 2018 Melbourne 400 kuzivikanwa nokuda kutsigira zvikonzero sezvo 2018 Coates Hire Supercars Melbourne 400 aiva motokari mujaho chiitiko nokuda Supercars Championship kuti yakaitwa pakupera kwevhiki kubva 22 kusvika 25 March 2018. Chiitiko chacho chakamhanya paMelbourne Grand Prix Circuit muMelbourne, Victoria, uye chakaratidza kumhanya kwekutanga kweMelbourne 400. Yakanga iri yechipiri chiitiko chegumi nenhanhatu mu2018 Supercars Championship uye yaive nemakwikwi maviri emakiromita zana nemakumi matatu, uye makwikwi maviri emakiromita makumi manomwe. Makwikwi aya aiitirwa kutsigira 2018 Australian Grand Prixuye yakaratidza kokutanga kuti mijaho inotsigira Supercars yaizova nhambo inobhadhara mapoinzi yeSupercars Championship. 