Between 2005 and 2024, China more than doubled its oil consumption, accounting for over half of the global increase in oil demand during that period. But in 2024 Chinese annual oil demand declined for the first time in twenty years. This column develops a dynamic model which suggests that the rapid adoption of electric vehicles in China has been a major driver of this trend. In 2024 alone, EV diffusion displaced about 0.43 million barrels per day of gasoline, and this figure could quadruple by 2040 with an accelerated transition.