What causes high fuel consumption in Nissan Livina?

[EmiliaMarie]

The reasons for high fuel consumption in Nissan Livina can be attributed to the following 4 points: 1. Insufficient tire pressure or severe tire wear: Tires are relatively easy to check, so they should be inspected first. If the tire pressure is insufficient, fuel consumption will increase; if the tire pressure is normal, then check the degree of tire wear. Severe tire wear often leads to slipping, which also increases fuel consumption. 2. Excessive carbon deposits in the car engine: This can cause high fuel consumption, and it is likely due to the use of substandard fuel. 3. Damaged oxygen sensor in the internal control unit: The oxygen sensor mainly monitors the air-fuel ratio of the engine. Once it is damaged, it will cause an imbalance in the air-fuel ratio, inevitably leading to abnormally high fuel consumption. 4. Malfunction in one of the engine control units: If one of the control units malfunctions, it is likely to cause increased fuel consumption, accompanied by poor power performance and thick black exhaust emissions.