How often should spark plugs be replaced on Petrol Car?

There was an ignition problem. It turned out that the spark plug of the Petrol Car had not been replaced for a long time, causing the Petrol Car to fail to start normally. However, I didn`t know much about spark plugs in Petrol Car before, and I didn`t know when they needed to be replaced. The editor will explain to you the frequency of replacement of spark plugs in Petrol Car.

The spark plug of a Geely Car is the main component of the ignition system of a Geely Car. Every gasoline engine has a gasoline spark plug, one for each cylinder. Some high-speed gasoline engines are equipped with two gasoline spark plugs per cylinder. The function of a Geely Car spark plug is to introduce the high voltage generated by the ignition coil into the engine cylinder, generate sparks in the gap between the Geely Car spark plug electrodes, and ignite the mixture.
If you cannot confirm the type of spark plug for Petrol Car, it is recommended to refer to the company's maintenance manual. The maintenance intervals required by vehicle manufacturers of different models are not exactly the same. Maintenance manuals are specially designed for every situation. Different usage conditions and different driving styles will affect Geely Car spark plugs.
If it is found that the vehicle is difficult to start when cold, has obvious sluggishness and idling jitter when driving, or can reduce the acceleration function, the spark plug of the Geely Car should be checked in time. If the above symptoms appear on the vehicle, it may be caused by the aging of the spark plugs of Petrol Car.
If the above situation occurs, it will be more difficult to start the vehicle cold, with obvious sluggishness and idling jitter, frequent idling self-extinguishing, reduced speed increase function, insufficient power, and increased fuel consumption.