What are the reasons for the sudden increase in fuel consumption of the Corolla hybrid version?

[McKeira]

Reasons for the sudden increase in fuel consumption of the Corolla hybrid version are as follows: 1. Insufficient tire pressure and tire wear: Insufficient or low tire pressure increases friction between the tires and the ground, leading to greater resistance and higher fuel consumption. Severe tire wear can cause frequent slipping, which also increases fuel consumption. 2. Severe carbon deposits: Carbon deposit issues in the car engine often occur after long-distance driving or when the car is lent to others. This is because fuel quality varies by region, even for the same type of fuel. Using unsuitable fuel can lead to excessive carbon deposits in the engine, resulting in higher fuel consumption. 3. Spark plug failure: Spark plugs are the main components that ignite the air-fuel mixture in the cylinder (diesel engines do not require spark plugs for ignition). If the engine is the heart of the car, then the spark plug is the 'pacemaker' of the engine. Poor performance or aging of the spark plug will inevitably cause the engine to underperform and increase fuel consumption.