What Are the Reasons for the Excessive Fuel Consumption of the Captiva?

[LeGabrielle]

Here are the reasons for the excessive fuel consumption of the Captiva: 1. Insufficient tire pressure and tire wear: Low or insufficient tire pressure increases friction between the tires and the ground, leading to greater resistance and higher fuel consumption. Severe tire wear can also cause frequent slipping, which similarly increases fuel consumption. 2. Pay attention to fuel quality and regularly clean carbon deposits: Poor-quality gasoline can lead to increased carbon deposits, which roughen the intake pipe walls, affecting air intake efficiency and the quality of the air-fuel mixture, causing a sharp rise in fuel consumption. Therefore, fuel quality should not be overlooked, and cleaning carbon deposits every six months is essential. 3. Regularly check the oxygen sensor: This ceramic component, located on the engine's exhaust pipe, detects and controls the oxygen-to-fuel ratio. Over time, the electronic fuel injection system's computer may fail to receive information about oxygen concentration in the exhaust pipe, often resulting in a higher concentration of the air-fuel mixture in the engine and increased fuel consumption. Therefore, it is important to regularly inspect the condition of the oxygen sensor, which typically needs replacement after 80,000 to 110,000 kilometers. 4. Driving habits: Everyone has different driving habits, and poor driving habits can also lead to higher fuel consumption. For example, "sudden acceleration, flooring the throttle at startup, etc." Thus, good driving habits are a crucial factor in preventing increased fuel consumption. 5. Road conditions: Congested road conditions can also cause higher fuel consumption because the engine works harder to overcome ground friction when the vehicle moves from a standstill, leading to increased fuel injection and higher consumption. Additionally, short-distance driving can result in higher fuel consumption because the engine and vehicle may shut down just as they reach optimal operating temperature.