What Maintenance Should Be Done on a Car with 40,000 Kilometers?

3 Answers
SanHadley
07/29/25 10:57am
For a Mercedes-Benz at the 40,000-kilometer maintenance interval, the engine oil and oil filter must be replaced. The air filter and cabin air filter should first be inspected, and the fuel filter should be replaced. Additionally, various vehicle fluids, spark plugs, brake pads, and tires also need replacement. Introduction to Car Maintenance: Car maintenance refers to the preventive work of regularly inspecting, cleaning, replenishing, lubricating, adjusting, or replacing certain parts of the vehicle, also known as vehicle servicing. Maintenance Scope: Modern car maintenance primarily includes the engine system, transmission system, air conditioning system, cooling system, fuel system, power steering system, and other related components.
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AlainaDella
08/13/25 4:45pm
I follow this routine for every car I drive when it reaches 40,000 kilometers. The most basic oil and oil filter changes shouldn’t be skipped—proper engine lubrication prevents overheating and issues. Check the air filter and replace it if it’s dirty, ensuring smooth airflow for better fuel efficiency and performance. Also, inspect the spark plugs; if they’re worn out around 40,000 km, replace them to avoid ignition problems. Prioritize the braking system—check brake pad thickness and brake fluid, as safety should never be compromised. Rotate and balance the tires to even out wear and extend their lifespan. Test the coolant quality to prevent corrosion and clogging. Check the battery’s voltage stability, especially since cold weather can make starting difficult. Finally, have a mechanic run a full computer scan to catch any minor issues. Regular maintenance keeps the car running smoothly and gives peace of mind. Ignoring these steps leads to higher repair costs later—I recommend making a checklist to stay on track.
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LydiaLee
10/07/25 8:05am
I need to save on my budget, so I'll focus on key maintenance items at 40,000 kilometers. Prioritize oil changes—opt for full synthetic if possible for better durability and reduced frequency. Replace the air filter to improve fuel efficiency, and do it yourself to save money. Don't skip tire rotation to avoid uneven wear and costly full replacements. Always check the brakes—inspecting pads early prevents more expensive rotor damage. DIY tire pressure checks and balancing save money and boost fuel efficiency. Lubricate moving parts to prevent friction damage. Maintain coolant levels to prevent overheating. Skip unnecessary full-service items, but never skimp on safety components—this approach keeps the car fuel-efficient, reliable, and cost-effective long-term.
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