For a new car that has traveled 30,000 kilometers, the maintenance items generally include the following: 1. Replace engine oil and oil filter: This is a relatively routine maintenance item and is required for almost every service. Replacing the engine oil and oil filter can enhance the engine's lubrication and improve its performance. 2. Replace the air filter: After the car has traveled 30,000 kilometers, impurities can easily clog the air filter, affecting the normal operation of the car's air conditioning system. 3. Check the coolant: The car coolant is a consumable that protects the engine from overheating, preventing the engine from 'boiling over.' 4. Clean the engine: Add a professional engine cleaner and let the vehicle idle for about 15 minutes, which helps extend the engine's lifespan. 5. Check the transmission: Ensure the transmission is functioning properly and that the transmission fluid is at the correct level. 6. Inspect the braking system: Check the wear level of the brake pads and the condition of the brake fluid. 7. Check the tires: Verify the tire pressure of both the main and spare tires, as well as any signs of wear. 8. Inspect the lights: Ensure the taillights, warning lights, turn signals, and headlights (high and low beams) are functioning correctly. 9. Clean carbon deposits: Removing carbon deposits can improve the vehicle's power and reduce fuel consumption.
