Comprehensive car maintenance should follow the principle of "periodic and prioritized". The core is to ensure driving safety and vehicle performance through regular inspection and replacement of key components and fluids. Basic maintenance includes changing the engine oil and filter every 5,000-10,000 kilometres or 6 months, while checking tyre pressure (2.3-2.5 Bar is recommended in summer, and increased by 0.2 Bar in winter), lights and fluid levels. Mid-term maintenance (10,000-20,000 kilometres) requires additional replacement of air filters and cabin air filters (shortened to 8,000 kilometres in dusty environments), as well as checking the thickness of brake pads (must be replaced if less than 3mm) and the moisture content of brake fluid (replace immediately if it exceeds 3%). Major maintenance (40,000-60,000 kilometres) covers key items such as transmission fluid (60,000 kilometres for automatic transmissions, extendable for manual transmissions), spark plugs (60,000 kilometres for iridium ones), and timing belts (inspect at 80,000-100,000 kilometres). Tyres should be inspected monthly, and replaced when tread depth reaches 1.6mm or after more than 3 repairs, while regularly removing debris from tread grooves. Coolant level, battery condition and shock absorber leaks should also be periodically checked to ensure long-term vehicle reliability.
