
BMW 320Li maintenance items: Replace engine oil, oil filter, replace fuel filter, replace spark plugs. Replace engine oil and oil filter: Improve oil quality to ensure smoother power delivery and extend engine life; enhance the ability to filter impurities and debris. Replace fuel filter: Remove impurities and moisture from the fuel to allow the engine to perform at its best. Replace spark plugs: Prevent ignition difficulties and insufficient engine power. Replace brake pads: Extended driving can cause severe wear on brake pads, reducing braking effectiveness. Replacing brake pads ensures stable handling performance while driving.

I drive a BMW 320Li myself and have been doing so for several years, so I'm quite knowledgeable about maintenance. Simply put, there are minor and major services. Minor services are basically done once a year or every 10,000 kilometers, just changing the engine oil and oil filter, costing around a thousand yuan. The air filter and cabin air filter are recommended to be replaced every 20,000 kilometers; otherwise, the air quality inside the car deteriorates and affects the engine. Major services start around 40,000 kilometers, where spark plugs and brake fluid must be replaced, or else acceleration becomes sluggish and braking feels soft. By 60,000 kilometers, the transmission fluid needs to be changed—it's expensive but absolutely cannot be skipped, as repairing the transmission costs even more. Oh, and always keep an eye on the tires and brake pads; they wear out quickly and are directly related to safety. I usually go straight to the 4S dealership. Although it's more expensive, they keep records, which helps with resale value later on.

The BMW 320Li maintenance mainly depends on the mileage. The basic maintenance at 10,000 kilometers is to change the engine oil and oil filter, costing 1,000-1,500 yuan. At 20,000 kilometers, add the replacement of the air filter and cabin air filter, which you can do yourself to save 300-400 yuan in labor costs. At 40,000 kilometers, focus on checking the water content in the brake fluid and the spark plugs. The spark plugs must be replaced with genuine parts, otherwise fault codes may appear. At 60,000 kilometers, the focus is on the transmission fluid and differential oil, and this set will cost at least 7,000-8,000 yuan. Additionally, check the coolant and brake pads once a year. If the coolant is low, the engine may overheat, and if the brake pads are below 3mm, replace them immediately. Don't listen to people who say BMW maintenance is expensive; following the manual actually saves more money than random repairs.

Attention to all BMW 320li owners: Maintenance items are divided into three tiers based on mileage. Basic maintenance includes oil and oil filter replacement every 10,000 km. Intermediate maintenance involves replacing the air filter and cabin air filter every 20,000-30,000 km. Major maintenance requires spark plug and brake fluid replacement every 40,000 km. Here are some easily overlooked items: the fuel filter should be replaced at 60,000 km - if your car shakes during cold starts, it might be clogged; rotate your tires annually, otherwise rear tires on RWD cars wear out significantly faster; brake fluid must be tested for water content every two years - replace immediately if exceeding 3%. You can save half the cost by purchasing Mann filters yourself, but never compromise on cheap aftermarket spark plugs.


