What maintenance is needed at 40,000 kilometers?

[StAdriana]

At 40,000 kilometers, the maintenance items required for a car include replacing the engine oil, oil filter, and spark plugs, as well as inspecting the wheel hubs and braking system. Definition of car maintenance: Car maintenance refers to the preventive work of regularly inspecting, cleaning, replenishing, lubricating, adjusting, or replacing certain parts of the car, also known as car servicing. Content of major car maintenance: Major maintenance refers to the routine maintenance performed at the manufacturer-specified time or mileage, which includes replacing the engine oil, oil filter, air filter, and fuel filter. Interval for major car maintenance: Major maintenance is based on the existence of minor maintenance, and these two types of maintenance are generally performed alternately. The interval varies depending on the car brand, so it is best to follow the manufacturer's recommendations.

[MacJesse]

When my car reaches 40,000 kilometers, I usually perform some basic maintenance myself because it saves money and gives me peace of mind. First, changing the engine oil and oil filter is a must, otherwise, engine wear will accelerate, and fuel consumption will increase. I can save a few hundred bucks by buying the materials myself and finding a place to do the replacement. I also check or replace the air filter—if it's too dusty, the engine won't get enough air, reducing power. Other things to inspect are the tires and brakes. Rotating the tires helps them wear evenly and extends their lifespan. If the brake pads are too thin, I replace them promptly to avoid failure in emergencies. I also check the coolant and spark plugs, especially since spark plugs affect starting and fuel efficiency. This kind of maintenance is simple DIY—no need to spend money at the dealership—saving a lot while ensuring safe driving.

[MelanieAnn]

Safety is my top priority when driving, and the 40,000 km maintenance should never be neglected, with a focus on checking the brake system. Inspecting the wear on the front brake pads and rear brake discs is crucial—if they're too thin, an emergency stop could lead to an accident. Tire condition, including pressure and tread depth, must be measured accurately to maintain uniformity and reduce the risk of skidding. Engine oil replacement is basic maintenance; aged oil with excessive sludge can affect cooling, and engine stalling mid-drive is extremely dangerous. Don’t forget the lighting test—both high and low beams must function properly for night driving to avoid accidents caused by poor visibility. Also, check the coolant and brake fluid to prevent leaks that could lead to system overheating or brake failure. These small investments ensure safe long-distance travel and a more relaxed driving experience.

[VonHector]

From a mechanical perspective, it's necessary to change the engine oil at 40,000 kilometers to prevent oil oxidation and carbon deposits from affecting lubrication. The oil filter should also be replaced to remove trapped impurities and keep the system cleaner. The air filter may accumulate dust and requires cleaning or replacement to maintain smooth airflow and enhance performance. The spark plugs should be inspected as well; if the gap wears out, it can easily cause poor ignition and increase fuel consumption. Additionally, it's advisable to check the transmission fluid, as some vehicle models recommend changing it at this point to avoid transmission delays. Loose belts can lead to more significant issues, so timely maintenance can extend engine life, making it both economical and practical.