Why is the fuel consumption of the Sylphy getting higher and higher?

[McLiam]

Here are the specific reasons why the fuel consumption of the Sylphy is increasing: 1. Affected by temperature: Temperature changes can cause fluctuations in fuel consumption. In winter, lower temperatures generally lead to higher fuel consumption. 2. Long-term lack of vehicle maintenance: Dirty engine oil and air filters can also increase fuel consumption. Dirty oil leads to poor lubrication, increasing resistance in the engine's moving parts, which requires more energy to overcome, thereby raising fuel consumption. 3. Insufficient tire pressure: Low tire pressure increases the contact area between the tires and the ground, resulting in greater friction and driving resistance, which in turn increases fuel consumption. 4. Excessive carbon buildup in the vehicle: Carbon deposits commonly accumulate in the throttle body, fuel injectors, intake manifold, and piston tops. Excessive carbon buildup in any of these areas can lead to incomplete combustion, thereby increasing fuel consumption.