Considering the role of transport for a 1.5 degree stabilisation pathway and the importance of light-duty vehicle fuel efficiency within that, it is important to understand the key elements of a policy package to shape the energy efficiency of the vehicle fleet. This paper presents an analysis focusing on three types of policy measures: (1) CO2 emission standards for new vehicles, (2) vehicle taxation directly and indirectly based on CO2 emission levels, (3) fuel taxation. The paper compares the policies in the G20 economies and estimates the financial impact of those policies using the example of a Ford Focus vehicle model. This analysis is a contribution to the assessment of the role of the transport sector in global decarbonisation efforts. The findings show that only an integrated approach of regulatory and fiscal policy measures can yield substantial efficiency gains in the vehicle fleet and can curb vehicle kilometres travelled by individual motorised transport. The paper "On a pathway to de-carbonization - A comparison of new passenger car CO2 emission standards and taxation measures in the G20 countries" by Ziffer Yang, Peter Mock, John German, Anup Bandivadekar, and Oliver Lah (Wuppertal Institute) was published in "Transportation Research Part D: Transport and Environment" and is available for download via ScienceDirect.