Does a BMW need maintenance after running 20,000 kilometers?

[StGenesis]

After running 20,000 kilometers, a BMW requires appropriate maintenance. Below is relevant information about vehicle maintenance. 1. Types of maintenance: cleaning the throttle body and fuel injectors, four-wheel rotation and balancing, replacing the cabin air filter, and cleaning the catalytic converter. 2. Cleaning the throttle body and fuel injectors: This depends on the vehicle's usage. Vehicles that frequently drive on highways are less likely to be dirty and may not need cleaning. If the vehicle often drives in congested areas or for short distances, it is more likely to accumulate dirt and should be cleaned. 3. Cleaning the catalytic converter: The catalytic converter generally does not need cleaning unless there is a fault code or the vehicle fails an emissions test. 4. Four-wheel rotation and balancing and replacing the cabin air filter: It is recommended to perform both. Four-wheel rotation helps ensure even tire wear and extends tire life, while the cabin air filter, like the engine air filter, tends to get dirty quickly and should be replaced more frequently.