The demand for fuel is increasing everyday life and its risks poses a serious problem to this globalization. It is an unprecedented alternative fuel source for biodiesel designed to increase the value of fossil fuels and increase the longevity and purity of the diesel engine. The origin of fossil fuels will decrease in the coming years, besides, the price and demand for fuel will be rare. The negative environmental barrier prompted researchers to find alternative fuels for fossil fuels. Biodiesel from watermelon seed oil (WSO) had a lot of appeal and could be a different alternative to diesel without any mechanical modifications. This will help protect the environmental status of crude oil in oil imports, which is expected to increase by 82% by 2020. The present study focuses on the comparative behavior of B20 [1], which is zirconium dioxide (ZrO2) with various nanoparticles. In some cases, Zirconia is the white crystalline oxide of Zirconia, so it’s most natural form with a monoclinic crystal structure is batiste ore. Zirconium dioxide (ZrO2) with 20% watermelon seed oil biodiesel + 80% diesel (B20). The compounds were mixed with 20 particles per million (ppm), 40 ppm, B20 with 60 ppm and B20 with a magnetic motion for 30 min, followed by sonication of the nanoparticles for 30 min, respectively. Biodiesel compounds at a B20 ratio in diesel fuel increase efficiency and reduce emissions of hydrocarbons, carbon monoxide and smoke due to the emission of nitrogen oxides due to better combustion properties. Criticisms conclude that additional applications of biodiesel are best for improving combustion efficiency and reducing emissions.