What to Do About High Car Fuel Consumption?

2 Answers
DelAnderson
07/24/25 1:38pm
Reasons and solutions for high car fuel consumption are as follows: 1. Clean engine carbon deposits: Excessive carbon deposits in the engine are a significant cause, mainly due to the use of inappropriate fuel. It is recommended to add a certain amount of cleaning agent when refueling. If the effect is not obvious, it indicates a large amount of carbon deposits in the engine. In this case, the car must be taken to a 4S shop for professional technicians to clean the carbon deposits inside the engine. After cleaning, it is best to drive the car at high speed for a while, as this helps to increase displacement and allows stronger airflow to remove larger carbon deposit particles. 2. Check the oxygen sensor: As an internal control unit of the car, the oxygen sensor mainly monitors the fuel-air ratio in the engine. Once damaged, it will cause an imbalance in the fuel-air ratio, leading to a sudden increase in fuel consumption. If the oxygen sensor is damaged, the exhaust pipe will emit darker-colored exhaust gas while driving, and the oxygen sensor should be replaced at this time. 3. Regularly replace the three filters: During the use of the vehicle, the oil filter, air filter, and fuel filter should be replaced regularly. If not replaced for a long time, they will become dirty and affect performance, sending incorrect information to the engine control unit, resulting in incomplete fuel combustion and increased engine carbon deposits.
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McAnastasia
08/11/25 7:37am
I often drive long distances and find that high car fuel consumption is mostly due to insufficient tire pressure or aggressive driving habits. Before each trip, I always check if the tire pressure meets the standard, as the value recommended in the manual is crucial. Regularly replacing the air filter can save a lot of fuel because a dirty one restricts air intake. While driving, avoid sudden acceleration and hard braking. I use cruise control to maintain a steady speed. Additionally, setting the air conditioning too high can also increase the load, especially in summer. Try using the external circulation mode and a moderate temperature. A heavy car body is also not fuel-efficient; clearing out unnecessary items from the trunk can help improve this. Overall, developing good maintenance habits and gentle driving will naturally reduce fuel consumption.
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