What Causes High Fuel Consumption in Vehicles?

[StJoel]

Here are the reasons for high fuel consumption in vehicles: 1. Engine Carbon Deposits: Stop-and-go driving conditions in the city can increase carbon deposits, and the habit of idling to warm up the engine also contributes to carbon buildup. Many driving conditions and habits can lead to carbon accumulation. Excessive carbon deposits can affect the throttle's air intake, making the vehicle prone to stalling; carbon deposits can also adhere to the intake passages, reducing intake efficiency and worsening the air-fuel mixture; severe carbon deposits can even occupy cylinder volume, affecting combustion quality and causing knocking. 2. Spark Plugs Need Replacement: Spark plugs are responsible for igniting the air-fuel mixture in the cylinders. Years of operation can wear them out, leading to insufficient ignition energy and dimmer sparks. The combustion time in the cylinders is very brief, leaving no room for slow ignition—the quality of the spark at the moment of ignition directly affects combustion quality and completeness.