Obtaining life cycle greenhouse gas (GHG) emissions data are the basis for the study of vehicle energy conservation and emissions reduction technology pathway. Based on the China's data of energy systems and materials in 2019, this paper systematically analyzed the GHG emissions results of eight kinds of vehicles with four power systems, including internal combustion engine with different fuels, lithium battery, fuel cell and hybrid system with different fuels, in the whole processes of passenger car production, driving, recycling and regeneration. Moreover, the future results under different energy scenarios were predicted by considering the variation of the power generation mixes, hydrogen production mixes, and methanol production mixes, the efficiency improvement of power systems, and the carbon reduction of the advancing crude oil extraction and refining process in China. The results show that the GHG emissions of methanol vehicle, methanol hybrid vehicle, gasoline vehicle, hydrogen fuel cell vehicle, gasoline hybrid vehicle, blue methanol vehicle, pure electric vehicle and blue methanol hybrid vehicle in 2019 are 384.7, 283.4, 226.6, 180.9, 171.1, 158.7, 139.4 and 123.5 g/km respectively. For the future energy scenarios, the GHG emissions of eight kinds of vehicles will be significantly reduced, and the GHG emissions of blue methanol hybrid vehicles, pure electric vehicles, and hydrogen fuel cell vehicles are comparable in 2060, which are lower than the other vehicles.
