What Are the Reasons for High Car Fuel Consumption?
2 Answers
There are 4 main reasons for high car fuel consumption: 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. 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 using substandard fuel. 3. Damage to the oxygen sensor in the internal control unit: The oxygen sensor mainly monitors the fuel-air ratio in the engine. Once it is damaged, it will cause an imbalance in the 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.
Last time I noticed a sudden increase in my car's fuel consumption, it turned out the tires were underinflated. Driving with low tire pressure is like running in soft-soled shoes—it's extra effort. Running the AC at full blast for long periods also consumes more fuel, especially in traffic when the compressor keeps cycling. A trunk packed with toolboxes and water bottles is like carrying an extra passenger. Keeping your foot on the brake at red lights forces the transmission to work harder. Driving on the highway with windows down creates frighteningly high wind resistance. These are small habits we often overlook, but correcting them can save nearly half a tank of fuel each month.
