
The main maintenance items for a car with 40,000 kilometers include the following: 1. Changing the engine oil and oil filter is a must. Due to the harsh conditions of high temperature and high pressure inside the engine, the shelf life of the oil is significantly shortened, and its performance greatly deteriorates. Over time, it can no longer protect the engine effectively. The oil filter is replaced simultaneously to prevent impurities from mixing with the oil, causing oxidation and producing sludge that can clog the oil passages. 2. The air filter should be replaced every 10,000 to 15,000 kilometers. 3. If the spark plugs have never been replaced before, they should be changed during the 40,000-kilometer maintenance.

I've been driving for eight or nine years. When the car reaches 40,000 kilometers, it's essential to perform a comprehensive maintenance to avoid minor issues turning into costly major problems. Key tasks include changing the engine oil and oil filter to maintain lubrication and reduce wear; inspecting the brake system, such as brake pad thickness and brake fluid moisture content, as safety is paramount; rotating the tires and checking for even wear to improve handling; replacing the air filter if it's clogged with dust for smoother airflow; replacing spark plugs at this stage to enhance ignition efficiency and reduce fuel consumption; checking the coolant level and concentration to prevent overheating and freezing cracks; and for automatic transmissions, consulting the manual to see if a fluid change is needed. Last time I delayed maintenance, the transmission failed at 50,000 kilometers, costing thousands in repairs—a hard lesson learned. Regular maintenance extends the car's lifespan and ensures peace of mind.

My car has just reached 40,000 kilometers, and as a novice, I was a bit worried. But after consulting, I understood the basic maintenance items. Changing the engine oil is a must, and the filter should be replaced every 5,000 to 10,000 kilometers. Checking the brake pads and brake fluid ensures reliable emergency braking. Inspecting the tire tread depth and even tire pressure helps prevent the risk of blowouts. The air filter can be removed for cleaning or replacement to improve in-car air quality. Spark plugs may need to be replaced depending on the car model to enhance fuel economy. For automatic transmissions, it's advisable to check or replace the transmission fluid. A battery health test is essential to avoid breakdowns on the road. Additionally, it's best to have a professional check the suspension and lighting systems. Ignoring these maintenance tasks can turn minor issues like increased fuel consumption into major problems. I need to schedule an appointment for next week to address these—safety first.

As a car enthusiast, I can't resist tinkering with my car at 40,000 kilometers. First, change the oil and filter to protect engine health; rotate the tires to reduce wear and extend lifespan; check the brake pads to ensure responsive braking; replace the spark plugs at this point to enhance acceleration performance; confirm the coolant is within the proper range to prevent overcooling or overheating; opt for a high-performance air filter to optimize air intake; and inspect the suspension and steering to avoid bumps and instability. After this maintenance, the car drives noticeably smoother with reduced fuel consumption, feeling like a brand-new vehicle with full performance.

Safety first, key inspections are a must at 40,000 kilometers. Essential checks include: brake system components like pad thickness and fluid quality to reduce risks; tire wear condition to prevent hydroplaning in rainy seasons; full lighting functionality to eliminate nighttime blind spots; proper coolant concentration to avoid engine overheating; suspension inspection for enhanced handling stability. Neglecting these details easily leads to accidents. My neighbor almost rear-ended another car at 50,000 km due to unchecked brake fluid. Timely maintenance spending a few hundred yuan can prevent major incidents and ensure safety.


