···
Log in / Register

What maintenance does a car with 40,000 kilometers need?

5 Answers
DiTucker
07/29/25 6:06am

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.

Was this review help?
17
5
Share
StEli
08/12/25 9:06pm

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.

Was this review help?
16
4
Share
Expand All
ZoeLee
10/04/25 2:05am

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.

Was this review help?
7
3
Share
Expand All
LaRichard
11/17/25 3:41am

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.

Was this review help?
19
3
Share
Expand All
EmilioDella
01/07/26 5:18am

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.

Was this review help?
7
2
Share
Expand All
More Forum Discussions

Can auto-hold be kept on all the time?

Auto-hold is an automatic parking function that can be kept on all the time. Here is an extended introduction about auto-hold: Advantages of the auto-hold function: The auto-hold function can greatly facilitate the driver by preventing the vehicle from rolling backward when stopping in stop-and-go traffic conditions. The owner can keep this function on all the time, which has no negative impact on the vehicle itself. Principle of the auto-hold function: The auto-hold function calculates the precise parking braking force through the tilt sensor controlled by the control panel. When activated, the parking brake control unit uses information from the clutch distance sensor, clutch engagement speed sensor, throttle sensor, etc. to perform calculations. When the driving force exceeds the driving resistance, the parking brake is automatically released, allowing the car to start smoothly.
10
0
Share

Can Hybrid Cars Get Green License Plates in Hangzhou?

Vehicles that are plug-in hybrid electric vehicles (PHEVs) can be registered with green license plates, which are a type of new energy vehicle plate. Below is relevant information about hybrid vehicles: Advantages of hybrid vehicles: Hybrid vehicles have high fuel efficiency and superior driving performance. The engine of a hybrid vehicle uses fuel, and with the assistance of an electric motor during startup and acceleration, fuel consumption can be reduced. Simply put, compared to vehicles of the same size, hybrid vehicles have lower fuel costs. Criteria for green license plate vehicles: New energy vehicle models such as pure electric vehicles or plug-in hybrid electric vehicles can be registered with green license plates. These vehicles have no adverse impact on the surrounding environment during daily driving.
1
3
Share

How Often Should 0w-20 Engine Oil Be Changed?

If using conventional 0w-20 engine oil, it can be changed every 5,000 kilometers or every six months. If using fully synthetic 0w-20 engine oil, it can be changed once a year or every 10,000 kilometers. Below is extended information about engine oil: How to identify synthetic engine oil: Check whether it is labeled as PAO or ester-based engine oil. Only products that use these two raw materials without blending with Group I, II, or III base oils are fully synthetic engine oils. Additionally, if it is PAO or ester-based engine oil, it will definitely be labeled as fully synthetic engine oil. Criteria for selecting engine oil: When selecting engine oil, strictly follow the oil grade specified in the vehicle's user manual. If the same grade is not available, you can use a higher-grade oil, but never use a lower-grade oil as a substitute.
6
3
Share

Can the black roof film applied for several years be removed?

The black roof film applied for several years can be removed. Here are the methods for handling car body film: Heating treatment: Due to prolonged adhesion, the film may age, and when removing the film, adhesive residue may be left on the roof. In severe cases, it may even peel off the car paint. Heating can be used for better results during the removal process. Direct covering: If the dislike for the black roof is the reason, directly covering it with another color roof film is a better solution. This saves time and avoids the need to remove the original roof film. After several years, the film may age, making it very difficult to clean.
7
5
Share

Can a car that requires 95 octane gasoline use 92 octane gasoline?

A car that requires 95 octane gasoline should avoid using 92 octane gasoline whenever possible. Here is an extended analysis regarding gasoline: Hazards of using the wrong gasoline: If a car that requires 95 octane gasoline is consistently fueled with 92 octane gasoline for an extended period, the octane rating of the gasoline used by the engine will fall below the required level. This can lead to engine knocking and potential damage to the engine. Differences in gasoline octane ratings: The octane rating of gasoline is determined by its octane number. Gasoline with a higher octane number has stronger anti-knock properties and consequently a higher octane rating. The anti-knock performance indicator of gasoline is referred to as the octane number, which corresponds to the gasoline octane rating. Generally, engines with high compression ratios require gasoline with higher octane ratings, while engines with low compression ratios can use gasoline with lower octane ratings. This ensures the proper operation of the vehicle.
19
1
Share

What Causes the Abnormal Noise After Installing a DSP?

After installing a DSP in a car, abnormal noise may occur mainly due to host interference, common ground interference, and signal line issues. Below is a detailed analysis of these causes: Host Interference: If abnormal noise occurs after installing a DSP, consider host interference. This means that as the DSP volume changes, part of the noise is the host's inherent noise, which can be amplified by the DSP. This can only be improved by increasing the host volume and reducing the DSP volume. Common Ground Interference: Apart from the host's inherent noise, abnormal current sounds may occur. First, check the grounding issue—whether the DSP's ground is connected to the host's ground. Otherwise, signal transmission can cause common ground interference due to inconsistent ground potentials, leading to potential differences. Signal Line Issues: Inspect the signal lines. If the signal enters the DSP at a low level, check whether the signal line quality meets standards and whether the wiring is affected by interference.
13
5
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.