How Often Should a Car Undergo Major Maintenance?

3 Answers
StLucia
07/24/25 5:53pm
It is recommended to perform a major maintenance service for your car every 20,000-30,000 kilometers or every 2 years. Below are the maintenance item intervals: 1. Engine oil and oil filter replacement primarily focuses on lubricating system maintenance. Under normal circumstances, this should be done every 5,000 kilometers. 2. The air filter's function is to filter air before it enters the cylinders, removing impurities such as dust, sand, and other foreign particles. It generally needs replacement every 20,000-25,000 kilometers. 3. Spark plugs are consumable parts that require replacement every 20,000 kilometers. 4. Proper installation of the fuel filter can prevent cylinder wear caused by impurities and moisture mixed into gasoline during storage, transportation, and refueling. To ensure optimal engine performance, the fuel filter replacement cycle is typically every 20,000 kilometers or annually.
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Genevieve
08/10/25 8:19am
My family car has been running for almost ten years, and I pay close attention to the frequency of major maintenance. Generally, I take it for a comprehensive check-up every two years or 30,000 kilometers. Since I drive daily for commuting and taking the kids to school, the engine and brake system are prone to wear and tear. A friend at the 4S shop recommended changing the engine oil and oil filter every time, as well as checking the brake fluid and coolant levels. If you often drive in dusty areas, the air filter should be replaced earlier. I remember once delaying maintenance for half a year, and a minor issue turned into a major repair costing over a thousand dollars. So, regular inspections not only save money but also avoid the embarrassment of breaking down halfway, giving much more peace of mind. During maintenance, don’t forget to have the mechanic check the tire pressure and tread depth—cars driven frequently on highways wear out faster, and safety should always come first. Once you develop the habit, the car runs smoother, and you don’t have to worry about sudden breakdowns affecting daily life.
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MacTravis
09/26/25 2:38am
As a car enthusiast with years of experience, the timing for major maintenance varies by vehicle model. My sedan typically requires it every two years or 40,000 kilometers, while sports cars or SUVs may need it every 20,000 kilometers due to their heavier engine loads. The core of major maintenance involves comprehensive inspections and part replacements, such as engine oil, brake pads, transmission fluid, as well as testing the power steering fluid and cooling system. Don't just focus on mileage—driving habits are also crucial. Since I drive aggressively, I need more frequent maintenance. Environmental factors shouldn't be ignored either; for example, in the cold northern winters, fluid viscosity decreases, necessitating earlier replacements. I recommend owners consult their manuals or professional shops, as neglecting maintenance accelerates part aging and leads to costlier repairs. Regular upkeep maintains engine efficiency, saves fuel, and enhances driving pleasure. A car is like a body—only with proper care can it go the distance.
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