This chapter concentrates on a life cycle assessment (LCA) of hydrogen mobility options compared to other alternative and “classical” options regarding greenhouse gas emissions and acidifying emissions. This LCA includes the fuel production (i.e., hydrogen from natural gas, hard coal, electricity, and biomass as well as diesel and biodiesel, compressed natural gas and electricity), fuel distribution and its usage in correspondent vehicles (i.e., fuel cell electric, battery-electric electric, natural gas and diesel driven vehicle). In addition also the production of the vehicles is taken into account.