The current rate of economic growth is unsustainable without saving fossil fuels such as crude oil, natural gas or coal, therefore it is necessary to rely on alternative energy sources such as biomass, solar energy, hydropower, nuclear energy and many others. Also, economic growth leads to increasing production and consumption of plastic materials, and consequently the accumulation of plastic waste, which is a major environmental problem. By the pyrolysis process, chemical decomposition of organic substances using heat at high temperature without the presence of oxygen, it is possible to convert plastic waste into fuel, more precisely into pyrolytic oil. In order for pyrolytic oil to be used as a motor fuel, it must be purified by fraction distillation and other treatments and then blended into a conventional motor fuel. In this paper, the possibility of purification of pyrolytic oil by liquid - liquid extraction process using deep eutectic solvents and its blending in motor fuels was studied. The purification of the oil was performed by the process of liquid - liquid extraction using deep eutectic solvents. The most effective selective solvent was determined; solvent based on potassium carbonate, in the ratio solvent: oil = 0.1: 1. Purified oil by fraction distillation is fractionated into gasoline and diesel fraction and blended with gasoline and diesel fuel in the ratio motor fuel: PU = 90: 10. Analysis of the blends showed that the diesel fraction of pyrolytic oil blended with diesel fuel meets the prescribed standard for diesel fuels and is therefore suitable for use in diesel engines. On the other hand, the gasoline fraction blended with pure gasoline fuel did not meet the prescribed norm and is therefore not suitable for use in gasoline engines.