The present study aims to investigate the impact of marketing mix elements on customers' purchasing intentions in the context of Coles supermarkets in Australia. The study adopts a deductive research approach and primary research method, using a survey questionnaire to collect data from 100 randomly selected customers of Coles supermarkets in Melbourne. The study finds that marketing mix elements have a significant impact on customers' purchasing intentions, with product quality, price, and promotion being the most influential factors. The study provides insights for marketers to develop effective marketing strategies that align with customers' needs and preferences.