What maintenance is required at 40,000 kilometers?

[SanQuinn]

Car maintenance items at 40,000 kilometers are as follows: 1. Replace engine oil (lubricant) and oil filter: Must be replaced every 5,000 kilometers or six months. If using fully synthetic oil, it can be replaced up to every 8,000 kilometers. 2. Replace air filter and cabin air filter: The air filter and cabin air filter should be replaced every 20,000 kilometers or two years. 3. Replace fuel filter, entire brake fluid, and transmission oil: For automatic transmission models, transmission oil also needs to be replaced; for rear-wheel drive vehicles, differential oil should also be replaced. 4. Tires older than 4 years can be considered for replacement. Brake discs can be replaced if the brake pads have been changed three times. 5. Battery: The car battery should normally be replaced every two years. Even if the car hasn't driven 40,000 kilometers in two years, the battery should still be checked for power loss.

[AthenaFitz]

I drive to and from work, and as soon as the mileage hits 40,000 kilometers, I immediately go for maintenance. Changing the engine oil and oil filter is the top priority—smooth engine operation depends on it. Delaying oil changes can reduce engine lifespan and affect fuel efficiency. The air filter also needs replacing, especially in the city where dust is heavy. A dirty filter restricts airflow, weakening performance. Check the tire tread wear; if it's shallow, replace them and get a wheel alignment to prevent drifting. If the spark plugs are heavily carbon-fouled, replacing them will improve acceleration. Brake fluid should be changed every two years for sharper braking and safety. The 40,000-kilometer mark is critical—it's best to visit a professional repair shop for a full inspection, especially of the drivetrain and coolant, to prevent engine overheating. While you're at it, swap out the cabin air filter for fresher air when using the AC in summer. After maintenance, the car drives like new, saving money and giving peace of mind.

[CameronLynn]

Safety comes first when traveling with children. At 40,000 kilometers, I will schedule a comprehensive maintenance. The focus is on the braking system: checking brake pad wear and replacing brake fluid to ensure effective emergency braking; measuring tire balance and tread depth clearly, adjusting tire pressure to prevent the risk of blowouts. The cooling system needs to check the antifreeze concentration and color to avoid engine overheating and malfunctions. Test all the lights; they must be bright for night driving. The spark plugs may be aging, so replacing them improves power output, making long-distance driving more stable. Also, replace the air filter and cabin air filter to keep the interior air clean and comfortable. The 40k km maintenance costs little but can prevent major repairs, saving both worry and money compared to temporary fixes. Regularly recording maintenance logs makes it easy to track progress and ensures peace of mind for the family.

[StJace]

With decades of driving experience and 40,000 km maintenance expertise. Must-do items: Change engine oil and oil filter promptly to ensure engine lubrication and cleanliness. Replace the air filter when visibly dirty to maintain efficient air intake. Check brake pad thickness and replace if worn for reliable braking. Replace spark plugs if heavily carbonized to restore vehicle power. Don't overlook brake fluid replacement as it's crucial for safe deceleration. Ensure proper wheel alignment and balancing to prevent steering wheel vibration. At the 40,000 km milestone, don't skimp on preventive maintenance – it can extend your car's trouble-free operation by tens of thousands of kilometers.