What are the reasons for the Leiling's high fuel consumption?

[McJaxon]

Leiling's high fuel consumption is due to a dirty air filter, aging spark plugs, insufficient tire pressure, and excessive carbon buildup. Below are detailed explanations of the aforementioned reasons: Dirty air filter: If the vehicle has not been maintained for a long time, the engine oil and air filter become dirty, leading to increased fuel consumption. Aging spark plugs: Aging spark plugs and excessive carbon buildup in the engine affect ignition efficiency, resulting in higher fuel consumption. Insufficient tire pressure: Insufficient tire pressure increases the contact area between the tires and the ground, raising friction and driving resistance, which in turn increases fuel consumption. Excessive carbon buildup: Carbon buildup commonly occurs 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.

[StMadison]

I found my Levin is particularly fuel-thirsty, which may have a lot to do with my driving habits. For example, frequent sudden acceleration and hard braking, or prolonged driving in congested urban areas where each trip is too short for the engine to warm up properly, resulting in reduced engine efficiency and naturally higher fuel consumption. Insufficient tire pressure increases rolling resistance, leading to higher fuel consumption. If the trunk is always packed or the car is often fully loaded with passengers, the increased load also burns more fuel. Running the air conditioning at full blast, especially during summer cooling, consumes significant energy. Remember to press the accelerator gently, use cruise control more often, and regularly check these basic things can save a lot of money. I've tried it several times, and the results were quite good.

[VanLucas]

As a long-time owner of a Toyota Levin, I believe high fuel consumption is often related to improper vehicle maintenance. A clogged air filter reduces air intake and affects combustion efficiency, old engine oil becomes viscous and increases engine load, and worn spark plugs cause incomplete ignition which wastes gasoline. Over time, carbon buildup in the engine degrades performance and consumes more fuel. I recommend performing routine maintenance every 5,000 kilometers, including cleaning filters and changing engine oil, while also checking tire wear and inflation. After adopting these habits, I've noticed significant fuel savings and smoother driving performance.

[SanDamian]

My Levin sometimes experiences sudden increases in fuel consumption, possibly due to careless usage habits. For example, blasting the air conditioning at full power during extremely hot or cold weather while also opening windows for ventilation creates a large temperature difference between inside and outside, consuming more energy. Or, aggressively stepping on the accelerator just minutes before parking and turning off the engine wastes fuel. Poor urban road conditions with frequent braking and acceleration also reduce efficiency. Overloading, such as carrying unnecessary items in the trunk or adding aftermarket modifications, increases weight. Simple adjustments—like reducing unnecessary load, turning off the AC to let natural airflow in, and gently pressing the accelerator during test drives—can help improve efficiency.