What maintenance is required for a car at 30,000 kilometers?

[Wesley]

Generally, the maintenance items for a car at 30,000 kilometers include changing the engine oil, oil filter, air filter, fuel filter, cleaning the throttle body, replacing spark plugs, etc. Some 4S shops may recommend additional maintenance items, which car owners can consider based on their actual situation. Below are the relevant details: 1. Changing engine oil and oil filter: Replacing the engine oil and oil filter is essential. Under the harsh conditions of high temperature and high pressure in the engine, the shelf life of engine oil is significantly shortened, and its performance degrades, eventually failing to protect the engine. The oil filter prevents impurities from mixing with the oil, which can cause oxidation, leading to sludge and clogging the oil passages. The engine oil and oil filter should be replaced simultaneously. The air filter should be replaced every 10,000 to 15,000 kilometers, and the fuel filter every 30,000 kilometers. 2. Cleaning the throttle body: It is necessary to clean the throttle body at the 30,000-kilometer maintenance, but it is unnecessary before this mileage and can be declined. By 30,000 kilometers, the car has been driven for some time, and carbon deposits may accumulate in the throttle body, reducing its opening and causing unstable idling or poor acceleration. If the car owner notices a drop in power during this period, they should consider inspecting the throttle body and spark plugs during maintenance. 3. Replacing spark plugs: Spark plugs should be replaced at 30,000 kilometers if they haven’t been replaced before. While spark plugs may still function at this mileage, their ignition performance significantly declines, directly affecting the engine’s power, performance, and fuel consumption. If the car is running smoothly, replacement can be delayed by another 10,000 kilometers. 4. Other items: Besides these, the 30,000-kilometer maintenance involves inspecting and servicing dozens of items across multiple systems, including the engine, transmission, air conditioning, steering, braking, suspension, body, and tires.

[LeEverly]

When the car reaches 30,000 kilometers, I will perform a series of maintenance tasks to ensure its healthy operation. I usually start by changing the engine oil and oil filter, which is a basic procedure every 5,000 to 10,000 kilometers to prevent engine wear. Then, I check the air filter and replace it if it's too dusty to keep the engine breathing smoothly. The braking system is also crucial—I inspect the thickness of the brake pads and the condition of the discs, replacing them if they exceed the recommended wear limits, as safety comes first. For the tires, I check whether the tread wear is even and perform a wheel balance and alignment if necessary to avoid misalignment and excessive fuel consumption. The coolant level and purity must also be checked to prevent engine overheating issues. Finally, if the manufacturer recommends replacing the spark plugs at 30,000 kilometers, I inspect them to see if they need renewal to maintain ignition efficiency. As someone who enjoys studying cars, I also make it a habit to check small components like wipers and lights, as these details affect daily driving. I recommend finding a reliable repair shop or dealership and letting a professional technician go through everything.

[SabrinaLee]

As a new car owner, I pay special attention to several basic maintenance points when the car reaches 30,000 kilometers. First, change the engine oil and filter to keep the engine lubricated and prevent premature aging. I have the mechanic check the air filter and replace it if it's dirty, ensuring cleaner air intake. The braking system is the core of safety, so I remind the technician to check the brake pad thickness and brake fluid condition, fixing any issues promptly. Tire wear and pressure also need adjustment to ensure good traction, especially in rainy weather to prevent skidding. The cooling system is checked for fluid levels and antifreeze effectiveness to avoid breakdowns. If the spark plugs are worn out, replace them to improve fuel efficiency. I also pay extra attention to the cabin air filter, replacing it regularly to keep the air fresh. Maintenance is not something to take lightly, and planning ahead can save a lot of trouble. Before each service, I check the owner's manual, as different models may have slightly different requirements.

[LeLaura]

Having been into DIY car maintenance for so many years, I usually handle some of the upkeep myself when the car hits 30,000 kilometers. Changing the engine oil and oil filter is quite simple—just get the right tools and genuine oil. The air filter can be replaced as needed; sometimes blowing the old one clean can make it last a bit longer. Check the brake pads for thickness; if they're worn thin, order replacements online and swap them out. Measure the tread depth of the tires, and if uneven, perform a rotation and balance. Top up the coolant with proper antifreeze when it's low. If the spark plugs are loose or dirty, clean or replace them. Other tasks like testing the lights and adjusting small components can save time and money when done yourself. However, major items like drivetrain inspections should be left to professional shops—safety comes first. Developing these habits helps the car last longer.