A Range-Based Vehicle Life Cycle Assessment Incorporating Variability in the Environmental Assessment of Different Vehicle Technologies and Fuels

How to compare the environmental performance of different vehicle technologies? Vehicles with lower tailpipe emissions are perceived as cleaner. However, does it make sense to look only to tailpipe emissions? Limiting the comparison only on these emissions denies the fact that there are emissions involved during the production of a fuel and gives too much advantage to zero-tailpipe vehicles like battery electric vehicles (BEV) and fuel cell electric vehicle (FCEV). Would it be enough to combine fuel production and tailpipe emissions? Especially when comparing the environmental performance of alternative vehicle technologies the emissions during production of the specific components and their appropriate end-of-life treatment processes should also be taken into account. So the complete life cycle of the vehicle should be included in order to avoid problem shifting from one life stage to another. Within this manuscript, a full life cycle assessment (LCA) of Petrol, Diesel, Fuel Cell Electric (FCEV), Compressed Natural Gas (CNG), Liquefied Petroleum Gas (LPG), Hybrid Electric, Battery Electric (BEV), bio-diesel and bio-ethanol) vehicles has been performed. The aim of the manuscript is to investigate the impact of the different vehicle technologies on the environment and to develop a range-based modeling system that enables a more robust interpretation of the LCA results of a group of vehicles. Results are shown for climate change, respiratory effects, acidification and mineral extraction damage of the different vehicle technologies. A large range is witnessed in the results due to the variability within the car market. It is concluded that it is essential to take into account the influence of the vehicle parameters on the LCA results.