What are the reasons for the high fuel consumption of older smart models?

[VanEverett]

The high fuel consumption of older smart models may be caused by excessive engine carbon deposits. It is recommended to check if the car's engine needs carbon cleaning. Below is relevant information: Introduction: smart is a product of the collaboration between Germany's Mercedes-Benz and Swiss watch giant Swatch. The S in the name represents Swatch, M stands for Mercedes-Benz, and art signifies art, representing the artistic nature of their cooperation. Meaning: The word smart itself carries the meaning of cleverness and intelligence, which aligns with the brand's philosophy. With the increasing number of vehicles in modern cities, many automakers have proposed the concept of micro urban commuting cars to address this issue. The smart, developed by Swatch, is no exception. With the technical support of Mercedes-Benz, smart retains the creativity of concept cars while incorporating the advantages of fashion and practicality. The compact design, combined with intelligent and user-friendly control features, makes smart models resemble clever big toys.