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Why is the fuel consumption high during startup?

1 Answers

DelKevin

07/29/25 10:42pm

High fuel consumption during startup is due to the instantaneous fuel consumption when the car starts, which can reach 30-40 liters/100km. The fuel consumption then gradually decreases to normal levels while driving. Even rapid acceleration on the road won't result in such high fuel consumption again. Here are some methods to reduce fuel consumption: Clean engine carbon deposits: Excessive engine carbon deposits are a significant cause, mainly due to the use of unsuitable fuel. It is recommended to add a certain amount of cleaning agent when refueling, and after cleaning, it's best to drive at high speed for a while, which helps increase exhaust volume and allows stronger airflow to remove larger carbon deposit particles. Check the oxygen sensor: As an internal control unit of the car, the oxygen sensor mainly monitors the air-fuel ratio of the engine. Once it is damaged, it will cause an imbalance in the engine's air-fuel ratio, leading to a sudden increase in fuel consumption.

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