What maintenance should be done at 25,000 kilometers for a car?

[Doreen]

At 25,000 kilometers, the maintenance for a car includes changing the engine oil, oil filter, air filter, cabin air filter, and fuel filter. It also involves checking the tread depth, tire pressure, and wear condition of the tires, with a wheel alignment performed if necessary. The throttle body and idle speed valve should be inspected for excessive dirt and cleaned if needed. The condition of the spark plugs should be checked and replaced if necessary. For vehicles that have reached 25,000 kilometers, the maintenance should also include inspecting the power steering, braking system, and automatic transmission. Tests should be conducted to ensure the braking force, gear shifting, and steering are functioning properly. Additionally, the levels of various fluids should be checked to ensure they are at the standard positions, the tightness of the chassis bolts should be verified, and the lighting system should be inspected for proper operation.

[JoelFitz]

Oh when my car just hit 25,000 kilometers, I specifically went to the 4S dealership for maintenance. The technician told me this mileage is particularly critical and several items need careful attention: first is the mandatory engine oil and filter replacement - the oil should've been changed after the engine has run this long; second is checking brake pad thickness, after all with this much mileage driven, my car's front left brake pads were worn down to only 5mm; also needed tire rotation, swapping positions of all four wheels to extend service life; finally don't forget replacing the cabin air filter, which had turned completely black since last maintenance when it wasn't changed. I personally watched the technician inspect suspension bushings, saying the suspension was fine but reminding me to replace spark plugs at the next 30,000 km service.

[LaMadelyn]

As a frequent long-distance driver, I always make sure to perform these maintenance tasks every 25,000 kilometers: A complete oil and oil filter change is the most basic, with full synthetic oil allowing another 8,000 kilometers of driving; the air filter must be replaced, as the old one is always full of dust when removed; tire balancing and rotation are essential—last time I skipped it, and the front tires wore unevenly; checking the brake fluid's water content is particularly important, as I once had to replace it immediately after detecting excessive levels; finally, I have the technician plug in the diagnostic tool to read fault codes—my car once showed a historical oxygen sensor fault. After completing these, I check the coolant level and windshield wipers to ensure driving safety.

[LaKing]

I remember the technician told me during the last service that at 25,000 kilometers, these are the key things to address: definitely change the engine oil and oil filter, recommended to use 0W-20 grade; the four wheels must be rotated and balanced; replace both the air filter and cabin air filter—with Beijing's air quality, the filters turn black in just six months; the brake system needs a thorough inspection, my rear brake discs were already grooved; finally, the chassis rubber bushings must be checked, as rubber parts are most prone to aging. After the service, the throttle felt lighter, and there was no strange smell from the AC.

[HaydenAnn]

This mileage maintenance should be divided into two modules: core items and in-depth inspection. Core items include changing the engine oil and oil filter, dual filters (AC + air), and tire rotation with dynamic balancing. The in-depth inspection should measure brake pad thickness (recommend replacement if below 3mm), check brake fluid moisture content, transmission fluid condition, and aging of chassis rubber components. Finally, remember to apply grease to the sunroof tracks and door hinges—I once forgot to maintain them and ended up with sunroof noise for a long time. Spark plugs can also be checked in advance, but most vehicles only need replacement at 30,000 kilometers.

[JeremiahLynn]

During my last 25,000 km service, the 4S dealership listed over ten items, but the essentials boil down to five key points: First and foremost, change the engine oil and oil filter—using full synthetic oil for better durability. Second, replacing both the air filter and cabin air filter is a must, as neglecting them can reduce engine performance and breed bacteria. Third, perform tire rotation and wheel balancing. Fourth, inspect the braking system—my front brake pads were worn down to just 4mm and needed immediate replacement. Lastly, check all vehicle fluids and undercarriage components. Optional services like throttle body cleaning depend on condition; since my car showed no hesitation, I skipped it. After completing the full service, even pressing the accelerator felt more reassuring.