What are the reasons for the increasing fuel consumption of the new Sylphy?

[DiMarley]

The reasons for the increasing fuel consumption of the new Sylphy may include dirty engine oil and air filters due to long-term lack of maintenance, insufficient tire pressure, excessive carbon buildup in the engine, and the influence of temperature. The Sylphy is a model under Dongfeng Nissan. Below are detailed introductions about the Sylphy: Overview: The Sylphy is a mid-size car under Dongfeng Nissan Co., Ltd., and is one of the most typical mainstream family sedans in the Chinese market (alongside models like the Octavia PRO, Sagitar, Lavida, Corolla, and Bora). Its fuel consumption ranges from 4.9 to 6.1L/100km. The displacement is 1.6L. Others: It is equipped with a 1.6L naturally aspirated engine that meets the China VI emission standards, with a maximum power of 99kW (135 horsepower) and a peak torque of 159Nm. The transmission system is matched with a CVT gearbox. It also features the new Nissan-Connect super-intelligent system and an external 8-inch high-definition capacitive touchscreen.