The core of regular car maintenance lies in the replacement of engine oil and filters. It is best to do this every 5,000 to 10,000 kilometres or 6 to 12 months. The specific interval needs to be adjusted according to the type of engine oil (mineral oil, semi-synthetic or fully synthetic) and driving conditions. The former should be replaced every 10,000 to 20,000 kilometres to protect the engine, while the latter should be replaced every year or 10,000 kilometres to ensure the air quality inside the car. The brake system requires regular checks of the brake pad thickness (replace when it is below 3mm) and the condition of the brake fluid (replace every 2 years or 40,000 kilometres). For tyres, tyre pressure should be checked monthly and tyre rotation should be done every 10,000 to 20,000 kilometres. Tyres must be replaced when the tread depth is below 1.6mm. Other key items include spark plugs (nickel alloy: 20,000 to 30,000 kilometres; platinum/iridium: 60,000 to 100,000 kilometres), transmission fluid (manual transmission: 60,000 kilometres; automatic transmission: 80,000 to 100,000 kilometres), and coolant (replace every 2 to 3 years). The battery life is usually 2 to 5 years, and its voltage should be checked regularly. In addition, the inspection of the timing belt (60,000 to 80,000 kilometres) and the chassis suspension system should not be ignored. It is best to prioritize regular maintenance points and keep complete records to maintain warranty rights. Regular maintenance can not only prevent faults but also significantly reduce long-term repair costs.