What are the reasons for the high fuel consumption of the Besturn B70?

[VonJoy]

The official combined fuel consumption of the Besturn B70 is 7.5-7.6L/100km, which is relatively economical. If the fuel consumption suddenly increases, it may be due to excessive carbon deposits in the engine or a faulty oxygen sensor. It is recommended to go to a 4S shop for inspection. The reasons for the increasing fuel consumption of the car are as follows: 1. The impact of temperature on fuel consumption fluctuations: Generally, in winter when the temperature is low, fuel consumption will increase somewhat, almost comparable to the fuel consumption when using air conditioning in summer. This is because the engine emits more heat at low temperatures. 2. The vehicle has not been maintained for a long time: Dirty engine oil and air filters can also lead to increased fuel consumption. Dirty engine oil results in poor lubrication, increasing the resistance of various moving parts of the engine, requiring more energy to overcome the resistance, thus increasing fuel consumption. 3. The spark plugs need to be replaced: Spark plugs are often overlooked. Although they can still be used, insufficient ignition energy can cause delayed ignition, missing the optimal ignition time.