The Fuels Joint Research Group is an interdisciplinary group of engineers, scientists and physicians working in the field of fuel research. The scientific focus is on interactions between the various fuel components, the engine and the engine oil, and exhaust gas aftertreatment, particularly with regard to the resulting emissions and their effects on health. The investigation of alternative fuels, ranging from those of biogenic origin (biodiesel, HVO, bio-alcohols, bio-methane, etc.) to various e-fuels including hydrogen, opens up paths to sustainable energy supply for mobile systems in addition to electromobility.