What Causes High Fuel Consumption in the 10th Generation Accord?
2 Answers
Engine carbon buildup, checking the oxygen sensor, and regularly replacing the three filters. Below are detailed explanations: 1. Clean engine carbon deposits: Excessive engine carbon buildup is a significant cause, mainly due to the use of unsuitable fuel. It is recommended to add a certain amount of fuel cleaner during refueling. If the effect is not noticeable, it indicates a high level of carbon deposits in the engine. In this case, the vehicle must be taken to a 4S shop for professional cleaning of the engine carbon deposits by technicians. After cleaning, it is advisable to drive at high speeds for a while, as this helps increase exhaust flow and allows stronger airflow to remove larger carbon particles. 2. Check the oxygen sensor: As an internal control unit in the car, the oxygen sensor primarily monitors the fuel-air ratio in the engine. Once damaged, it can cause an imbalance in the fuel-air ratio, leading to a sudden increase in fuel consumption. When the oxygen sensor is faulty, the exhaust pipe emits darker-colored exhaust gases during driving, indicating the need for sensor replacement. 3. Regularly replace the three filters: During vehicle use, the oil filter, air filter, and fuel filter must be replaced periodically. If not replaced for a long time, they become dirty and clogged, affecting performance and sending incorrect information to the engine control unit, resulting in incomplete fuel combustion and increased engine carbon deposits.
Recently, while driving my 10th-generation Accord, I noticed an increase in fuel consumption. I've looked into this issue and found that the most common cause is driving habits, such as frequently accelerating hard with heavy throttle inputs, which instantly raises the engine RPM and can spike fuel consumption by 20-30%. Another factor is frequent stop-and-go traffic in the city—if the auto start-stop feature isn't engaged, idling consumes a significant amount of fuel. Poor vehicle maintenance can also contribute to higher fuel consumption, such as a dirty air filter reducing intake efficiency, worn-out spark plugs causing incomplete combustion, or old engine oil increasing viscosity and adding strain to the engine. Low tire pressure, which increases rolling resistance, is another hidden culprit—last time I checked, my tire pressure was 0.3 bar below the recommended level, and after correcting it, my fuel consumption dropped by about 0.8 liters. To save fuel, I recommend maintaining a steady speed, anticipating road conditions to minimize braking, and sticking to regular maintenance schedules—these small details can make a big difference.
