Hello, I am the owner of the Toyota Corolla twin-engine hybrid car 20 17, and the fuel consumption suddenly increased?

The sudden increase in automobile fuel consumption may have the following problems.

Check tire pressure and wear. Put this in the first place, because it is the easiest to check the tires, and you don't even need auxiliary tools. Tires are vulnerable parts and are prone to problems. If the inflation is insufficient, it will definitely increase fuel consumption and only need enough gasoline; If the car is badly worn, it is easy to slip and increase fuel consumption. At this time, it is necessary to change the tires (it is best to change both tires together).

Check the spark plug. Spark plug is the main component to ignite the air-fuel mixture in the cylinder (diesel engine does not need spark plug ignition). If the engine is the heart of the car, then the spark plug is the "pacemaker" of the engine heart. Its poor performance or aging will inevitably lead to engine fatigue and increase fuel consumption. You can remove the spark plug and check it to see the burning color, the gap between the electrodes, the gap between the porcelain body and the metal shell for water leakage and so on. If there is any problem, replace it in time.

Another possibility is that the air filter is too dirty. The air filter must be replaced regularly when the vehicle is in use. If it is not replaced for a long time, it will become dirty and greasy, which will affect the use and send an error message to the engine control unit, resulting in insufficient fuel combustion. It will return to normal after cleaning.

The function of automobile oxygen sensor is to monitor the oil-gas ratio in the car. If there is a problem, the oil-gas ratio will be out of balance, leading to an increase in fuel consumption. For example, if it is not replaced for a long time, silicon poisoning may occur, which will lead to an increase in the concentration of the mixer in the engine and eventually lead to an increase in fuel consumption. If the lack of electricity will lead to a higher concentration of mixed gas, the automobile oxygen sensor also needs to be replaced regularly!

Carbon deposit in automobile engine. This often happens after running a long-distance bus or lending it to others. This is because there are some differences in fuel quality in different regions, even if the fuel category is the same, there are differences. If you use oil that is not suitable for you, the car engine will accumulate too much carbon and consume too much oil.