The toxic makeup of waste motor oil which includes heavy metals, polycyclic aromatic hydrocarbons and other persistent organic compounds makes it a major municipal waste contaminant that poses significant risks to human health and the environment. Waste engine oil is improperly disposed of endangers ecosystems and human health by contaminating oil, water and air quality. Due to industrialization and extensive use of internal combustion engines that waste engine oil is rising and that needs necessity and efficient treatment. This study examines how waste engine oil affects the environments and emphasizes that it reduces soil fertility, contaminants groundwater supplies and increases greenhouse gas emissions. Various remediation techniques are examined including physiochemical methods, biological treatments and sustainable recycling approaches. Emphasis is placed on ecofriendly and cost-effective solutions that minimize environmental hazards while promoting resource recovery. To lessen the harmful effects of disposing of waste engine oil, strict waste management regulations, technological advancement and more public knowledge are essential. This research emphasizes how crucial it is to combine sustainable remediation methods with legal frameworks in order to guarantee efficient waste environmental preservation and management.