As a fuel, it produces lower levels of greenhouse gas emissions than traditional diesel, and improves the quality of diesel-engine exhaust. And standard diesel engines need no modifications to use it. All of which makes biodiesel a promising alternative fuel. But biodiesel has proven stubbornly expensive to produce.
生質柴油具有無毒、可再生，不易著火、溫室氣體排放少、改善柴油引擎廢氣排放品質，以及直接添加不用修改引擎等諸多特點，雖為替代能源新星，但面對成本居高不下等挑戰，未來的前景如何？