The present article aims at lowering down the pollutants in air due to diesel engine through mixing diesel with algae blooms. After being extracted from the algae bloom, the algae oil products are mixed with diesel in the B5, B15, and B25 ranges. Mixing oil execution is contrasted and the diesel utilizing a VCR motor. Using engine setup, the Biodiesel's mechanical efficiency and overall efficiency were examined. The VCR engine was used to investigate the biodiesel's emission characteristics, including CO and CO2 emissions, under various testing conditions. Based on the findings, it is possible to demonstrate that blended biodiesel has the potential to lessen environmental pollution while also offering superior efficiency to diesel.