Volkswagen CC 30,000 km Maintenance Items

[SimonDella]

For the Volkswagen CC's 30,000 km maintenance, replacing the engine oil and oil filter is a mandatory task. Under the high-temperature and high-pressure conditions inside the engine, the shelf life of engine oil is significantly shortened, and its performance greatly deteriorates. Over time, it fails to protect the engine effectively. The oil filter prevents impurities from mixing into the oil, which can cause oxidation, leading to the formation of sludge and clogging the oil passages. Both the engine oil and oil filter should be replaced simultaneously. The air filter should be replaced every 10,000–15,000 km, and the fuel filter every 30,000 km. 1. Engine oil and four filters. The four filters include: oil filter, air filter, fuel filter, and cabin air filter. The oil filter needs to be replaced at every maintenance service, while the air filter is recommended for replacement every 10,000–15,000 km, and the fuel filter every 30,000 km. The cabin air filter is suggested to be replaced every six months. If cost-saving is a priority, the cabin air filter can be skipped. However, the fuel filter must be replaced during the 30,000 km major maintenance. 2. Throttle body cleaning. Throttle body cleaning is unnecessary before 30,000 km. If a 4S shop or repair shop staff recommends this service at 10,000 or 20,000 km, you can directly decline. By 30,000 km, the car has typically been driven for at least a year or more. Over time, the throttle body accumulates carbon deposits at the intake due to prolonged use, leading to reduced airflow. This can cause minor idle instability, idle vibration, sluggish acceleration, and indirectly increase fuel consumption. At this point, it's advisable to inspect the throttle body, spark plugs, and other components that might contribute to these issues. 3. Spark plugs. By 30,000 km, the spark plugs are due for replacement. Although they haven't completely lost their ignition capability, their performance has significantly degraded. Poor ignition directly affects idle vibration, engine misfires, and weak acceleration. Reduced ignition performance also increases engine load, which is one of the factors contributing to higher fuel consumption. 4. Air conditioning system cleaning. Air conditioning cleaning removes dust and dirt from the AC ducts and provides a sterilizing effect. This service is optional. However, if the car has never undergone AC cleaning before 30,000 km, now is a good time to do it.