What are the reasons for the increasing fuel consumption of the JAC Refine S3?

[Faunus]

The reasons for the increasing fuel consumption of the JAC Refine S3 include the following situations: Tire pressure and tire issues: 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. Poor fuel quality: Pay attention to fuel quality and regularly clean carbon deposits. Poor-quality gasoline can lead to increased carbon deposits, which roughen the intake pipe walls, affecting the intake efficiency and mixture quality, causing a sharp rise in fuel consumption. Oxygen sensor malfunction: Regularly check the oxygen sensor. After prolonged use, the computer of the electronic fuel injection system may fail to receive information about the oxygen concentration in the exhaust pipe, often resulting in a higher concentration of the air-fuel mixture in the engine, which also increases fuel consumption.

[Nolan]

I've been driving my JAC Refine S3 for several years, and the sudden increase in fuel consumption is indeed frustrating. The most common causes are aging spark plugs or carbon buildup, forcing the engine to consume more fuel to compensate. Spark plugs typically need replacement every few tens of thousands of kilometers—if they're worn or heavily carbon-fouled, ignition becomes unstable, naturally driving up fuel consumption. Another major issue is a severely clogged air filter; when dirty, it restricts airflow to the engine, making combustion less efficient. A faulty fuel pump can also cause unstable fuel supply. These mechanical components all require thorough inspection. I recommend visiting a reliable auto repair shop to check the ignition system and fuel injectors, and consider a fuel system cleaning—often, this restores normal performance. Don’t forget to check tire pressure, as underinflated tires increase rolling resistance, quietly raising fuel consumption. In short, avoid guesswork—start with basic maintenance and see.

[SanRylee]

My JAC Refine S3 used to be quite fuel-efficient, but recently the fuel consumption has skyrocketed. I think it has a lot to do with my driving habits. Upon reflection, frequent sudden acceleration and hard braking really guzzle fuel, as the engine has to inject more fuel to cope with the abrupt changes. Running the AC more often also burns extra fuel, especially during long trips when the compressor is constantly running. Additionally, carrying heavy loads affects mileage – like a fully packed trunk or roof racks increasing drag and causing fuel consumption to spike. I recommend recording the trip computer's fuel economy data and comparing it with past records to identify changes. Try easing off the accelerator, minimizing lane changes/overtaking, and selecting smoother routes in urban driving. This approach not only saves fuel effortlessly but also prolongs the vehicle's lifespan.

[MacCarlos]

I've experienced the high fuel consumption issue with the JAC Refine S3, mainly due to neglected routine maintenance. The engine oil became too thick after not being changed for too long, increasing engine friction and wasting fuel, and a clogged oil filter has the same effect. Additionally, during cold starts in winter, the engine needs more time to warm up, leading to higher initial fuel consumption, but if this persists year-round, it might be a sign of an issue. I recommend a quick check: replace the air filter, check tire pressure, and inspect the spark plugs. Last time, my fuel consumption noticeably dropped after changing the air filter—simple and cost-effective. If you're not comfortable doing it yourself, have a shop handle it to avoid the daily pain of extra fuel costs.