What are the reasons for the high fuel consumption of the Hyundai Elantra?

[HarleyMarie]

The high fuel consumption of the Hyundai Elantra can be attributed to the following 4 reasons: 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 the degree of tire wear can be checked. When tires are severely worn, they often show signs of slipping, which also increases fuel consumption. 2. Excessive carbon buildup in the car engine: This can lead to higher fuel consumption, and this situation is likely caused by the use of substandard fuel. 3. Damage to the oxygen sensor in the internal control unit: The oxygen sensor primarily monitors the fuel-air ratio of the engine. Once it is damaged, it will cause an imbalance in the engine's fuel-air ratio, inevitably leading to abnormally high fuel consumption. 4. Malfunction of a certain engine control unit: If one of the control units fails, it is highly likely to cause increased fuel consumption, accompanied by poor power performance and thick black exhaust emissions.