This thesis explores the major challenges of decarbonizing the transport sector, with a focus on the French automobile market. It highlights the limitations of poorly targeted subsidies and recommends more effective policies, such as support for used electric vehicles and standards for the size of new electric vehicles.

Globally, the transport sector is the second-largest source of CO2 emissions, with private road transportation accounting for the majority of these emissions. In this study, we use a structural model and a novel dataset of the French new and used car markets to estimate the determinants of private car demand and price sensitivity. Our findings...

The recent inclusion of second-hand EV subsidies in several countries raises questions about their economic rationale. Contrary to conventional thinking, we show that while subsidies for second-hand EVs are often justified on equity grounds, they also improve efficiency as they influence the equilibrium composition of the vehicle fleet.