What are the maintenance items for a BMW at 20,000 kilometers?

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2The maintenance items required at 20,000 kilometers include the air filter, fuel filter, cabin air filter, and, depending on the vehicle's condition and environment, a carbon deposit cleaning service. BMW First Maintenance: Some manufacturers determine the first maintenance based on time or mileage. The exact timing for the first maintenance should be referred to in the vehicle's user manual or warranty manual. The first maintenance is very important and is free, so it's essential to remember to do it to avoid missing it and affecting the vehicle's third maintenance. BMW Maintenance Items: Maintenance items for a car primarily include replacing engine oil, oil filter, transmission fluid, spark plugs, cabin air filter, air filter, brake fluid, etc. However, not all these items need to be replaced at every maintenance service; it depends on their service life. Additionally, maintenance involves the inspection and upkeep of dozens of items across multiple systems such as the engine, transmission, air conditioning system, steering system, braking system, suspension, body, and tires.