At how many kilometers does a vehicle require a major maintenance service?

[McMiguel]

Vehicles require a major maintenance service every 40,000 kilometers. Routine maintenance items include: replacement of engine oil and oil filter. The primary function of the lubrication system is to effectively lubricate various components of the car engine to prevent excessive wear; the oil filter's role is to remove various impurities from the oil, ensuring the normal operation of the lubrication system. The oil filter should be replaced along with the oil during an oil change. The air filter's function is to filter the air before it enters the cylinders, removing impurities, dust, sand, and other foreign particles. The cleaning and maintenance of the air filter depend on the operating environment. The gasoline filter is typically replaced after driving 20,000 to 25,000 kilometers. Spark plugs are consumable parts and should be replaced every 20,000 kilometers.