Why is the Changan CS75 consuming more and more fuel?

[RyanMarie]

There are several possible reasons why the Changan CS75 is consuming more fuel: 1. Excessive engine carbon deposits: Mainly caused by using unsuitable fuel. It is recommended to add a certain amount of cleaner when refueling. 2. Damaged oxygen sensor: This can cause an imbalance in the air-fuel ratio, leading to a sudden increase in fuel consumption. 3. Clogged three filters: During vehicle use, the oil filter, air filter, and fuel filter must be replaced regularly. If they are not replaced for a long time, they can become dirty and affect performance, sending incorrect information to the engine control unit, resulting in incomplete fuel combustion and increased engine carbon deposits.

[DiJameson]

I've been driving the Changan CS75 for three years, and recently noticed a sudden increase in fuel consumption. There could be several reasons for this. Excessive carbon buildup in the engine, especially clogged intake systems and fuel injectors, may be reducing combustion efficiency. Worn-out or improperly gapped spark plugs can cause misfires, wasting gasoline. A faulty oxygen sensor can also lead to incorrect data readings by the car's computer, resulting in uncontrolled fuel injection and a spike in fuel consumption. Additionally, insufficient tire pressure increases rolling resistance, requiring more effort with each press of the accelerator. I recommend first checking the air filter and replacing it if it's too dirty. Then, measure the tire pressure and maintain the manufacturer's recommended levels. Regular maintenance can also prevent these minor issues. If the problem persists, take the car to a professional shop for a diagnostic scan to check for electronic system faults. In short, taking good care of your car ensures both fuel efficiency and peace of mind.

[DeJuliet]

As a driver who frequently takes long-distance trips, I've noticed that the increased fuel consumption of my CS75 is often related to my driving habits. For example, frequent rapid acceleration and hard braking, or leaving the engine idling for extended periods while waiting, can consume extra fuel. In urban areas with heavy traffic, the constant stop-and-go driving leads to inefficient engine operation, naturally increasing fuel consumption. Later, I tried starting smoothly, anticipating deceleration in advance, avoiding frequent lane changes, and maintaining a steady speed on highways whenever possible, which significantly improved fuel efficiency. Regularly clearing out unnecessary items from the trunk to reduce vehicle weight also helps. Additionally, using the heater in cold weather or the air conditioning in hot weather adds to the load, so it's best to use them moderately. Developing fuel-efficient driving habits can really save a lot of money.

[SanRachel]

I'm concerned about vehicle maintenance. The sudden increase in fuel consumption of my CS75 is likely due to inadequate upkeep. For example, if the engine oil isn't changed when it should be, it becomes thick and aged, increasing engine friction and consuming more fuel. A clogged air filter restricts airflow, leading to poor combustion efficiency, so it's essential to check and replace it regularly. Worn or unbalanced tires can also increase resistance. I check tire pressure every month, ensuring it stays within the 230-250 kPa range, and change the oil and filters every few thousand kilometers. Aging spark plugs and belts also need attention. I always use high-quality gasoline to avoid clogging the fuel system with poor-quality fuel. These small actions prevent major problems.