At what mileage is the third maintenance for a sedan?

[LeilaniRose]

The third maintenance for a sedan is typically around 20,000 to 25,000 kilometers. It involves replacing the engine oil, oil filter, air filter, and cabin air filter, and may include cleaning the throttle body and idle speed control valve as needed. The first maintenance for a car is at 5,000 kilometers, which only requires an oil and oil filter change, along with a full vehicle inspection for issues like oil leaks. The second maintenance at 10,000 kilometers involves replacing the engine oil and oil filter, and cleaning the dust from the air filter and cabin air filter. Car maintenance refers to the regular preventive work of inspecting, cleaning, replenishing, lubricating, adjusting, or replacing certain parts of a vehicle, also known as vehicle upkeep. Modern car maintenance primarily includes servicing the engine system, transmission system, air conditioning system, cooling system, fuel system, power steering system, and more.