Modeling vehicle emissions in different types of Chinese cities: Importance of vehicle fleet and local features

► We examine vehicle emissions in 22 Chinese cities of different types and locations. ► Vehicle emission factors of the cities differ by 50-90% due to distinct local features. ► Each vehicle type contributes differently to total emissions among the cities. ► A substantial increase in vehicle emissions in most Chinese cities is foreseeable. ► City-specific fleet and local features are important in research and policy making.