Mobility plays a crucial part of our life. Alternative fuels and vehicle technology can mitigate climate change and greenhouse gases from road transport. This study analyses power-train deployments scenarios for the vehicle fleet of the city of Athens until 2021, taken into consideration European policy developments on vehicle CO2 emissions and technological level of readiness, European emissions standards, Greece's economic status, energy mandates and reductions in the European energy mix and translates these into comprehensive scenarios for the road transport sector. It quantifies and assesses the potential environmental impact of these scenarios on CO2 CO, NOx, HC, PM and CO2 emission reductions. The study proposes the development of a Strategic Zero Carbon Transport Plan for the city of Athens, aiming at the creation of a low carbon transport system, which will encompass issues such as life cycle thinking, urban planning and energy minimization aiming at climate change mitigation. (C) 2016 Elsevier Ltd. All rights reserved.